Vibration monitoring device for vertical axial flow pump

Abstract

The utility model relates to a vibration monitoring device for a vertical axial flow pump, and belongs to the field of vibration monitoring, the vibration monitoring device comprises a plurality of resonance plates, the multiple resonance plates are arranged on the outer wall of a pump shell of the vertical axial flow pump and are arranged at intervals in the axial direction of the vertical axial flow pump, and a first connecting part is arranged at the end, away from the pump shell, of each resonance plate; the fixing frame is vertically provided with a guide groove; the vibration sensor is arranged in the guide groove in a sliding mode through a sliding seat, a second connecting part is arranged on the sliding seat, and the second connecting part can be connected with the first connecting part; the driving mechanism is connected between the fixing frame and the sliding base and drives the sliding base to move along the guide groove, vibration monitoring can be conveniently conducted on different positions of the vertical axial flow pump by arranging the sliding vibration sensor, the vibration conditions of different positions can be obtained, meanwhile, the arrangement number of monitoring elements can be reduced through the structure, and the monitoring efficiency is improved. Connection is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the field of axial flow pumps, in particular to a vibration monitoring device for a vertical axial flow pump. Background Art

[0002] Axial-flow pumps, which rely on the force exerted by rotating impeller blades on liquids to move them along their axis, are available in vertical, horizontal, and inclined types. Vertical axial-flow pumps primarily rely on the lift of their blades to direct the fluid to the outlet, offering advantages such as high flow rates and high efficiency, making them suitable for a wide range of water pumping projects. However, they also have several drawbacks. Their slightly higher center of gravity results in less stable operation, making them prone to abnormal vibration during operation. This abnormal vibration can exacerbate wear on the pump, further exacerbating the vibration and creating a vicious cycle.

[0003] In order to obtain the vibration condition of the vertical axial flow pump in a timely manner, the prior art generally sets a vibration monitoring device for monitoring. For example, patent CN219974825U discloses a vertical axial flow pump unit vibration monitoring and fault warning device, which realizes vibration monitoring of the vertical axial flow pump unit in multiple dimensions by setting piezoelectric vibration sensors in the X, Y, and Z directions of the axial flow pump unit casing, and setting multiple eddy current vibration sensors in the X, Y, and Z directions on the motor layer and water pump layer of the vertical axial flow pump unit. Although this can realize vibration monitoring in more dimensions, it requires the installation of more sensors and cannot realize the online monitoring function. At the same time, the installation and connection are also cumbersome and troublesome. Utility Model Content

[0004] The existing equipment for monitoring the vibration of vertical axial flow pumps is not convenient for adjusting the position of the vibration monitoring element to realize the vibration conditions at different positions of the vertical axial flow pump. In addition, the solution structure in the above-mentioned patent technology is relatively complex. It uses multiple monitoring elements to monitor different positions in multiple dimensions respectively. The installation and connection are cumbersome and troublesome. The present application is a vibration monitoring device for a vertical axial flow pump, which adopts the following technical solutions:

[0005] A vibration monitoring device for a vertical axial flow pump, comprising:

[0006] A plurality of resonance plates, the plurality of resonance plates being arranged on an outer wall of a pump casing of the vertical axial flow pump, and the plurality of resonance plates being arranged at intervals along the axial direction of the vertical axial flow pump, and each resonance plate being provided with a first connecting portion at an end away from the pump casing;

[0007] A fixing frame, wherein the fixing frame is provided with a guide groove vertically;

[0008] A vibration sensor is slidably disposed in the guide groove via a slide, the slide being provided with a second connecting portion capable of connecting to the first connecting portion;

[0009] The driving mechanism is connected between the fixing frame and the slide, and drives the slide to move along the guide groove.

[0010] Preferably, three resonance plates are provided, the lowest resonance plate is provided at the position of the suction chamber of the vertical axial flow pump, the middle resonance plate is provided at the middle of the vertical axial flow pump close to the vertical axial flow pump, and the uppermost resonance plate is provided at the outlet elbow of the vertical axial flow pump.

[0011] Preferably, the first connecting portion includes:

[0012] The base plate is arranged vertically to the resonance plate, the base plate is a square plate, and first connection holes are correspondingly arranged near the four corners of the base plate.

[0013] Preferably, the slide is square, the second connecting portion is a second connecting hole, four second connecting holes are provided, and the four second connecting holes are correspondingly provided at the four corners of the slide, and the substrate is connected to the slide by inserting threaded connectors into the second connecting holes and the first connecting holes.

[0014] Preferably, the slide seat has a mounting cavity, and the vibration sensor is arranged in the mounting cavity with one end extending out of the mounting cavity.

[0015] Preferably, a manual multi-section telescopic rod is horizontally provided on the slide, and the telescopic rod is arranged on the lower end surface or the upper end surface of the slide.

[0016] Preferably, the driving mechanism comprises:

[0017] A lead screw, one end of which is rotatably arranged on a fixed frame, and the other end of which is threadedly arranged through a slide seat.

[0018] The utility model can conveniently monitor the vibration of different positions of the vertical axial flow pump by setting a sliding vibration sensor, and obtain the vibration conditions of different positions. At the same time, this structure of the application can reduce the number of monitoring elements to be set, and has simple connection and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a front view of the vibration sensor connected inside the slide.

[0021] In the figure, 1. resonance plate, 2. first connecting part, 201. base plate, 202. first connecting hole, 3. pump housing, 4. vibration sensor, 5. telescopic rod, 6. second connecting hole, 7. threaded connection, 8. mounting cavity, 9. slide seat, 10. screw, 11. guide groove. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0023] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] like Figure 1-2 As shown, a vibration monitoring device for a vertical axial flow pump includes a plurality of resonance plates 1, which are arranged on the outer wall of a pump casing 3 of the vertical axial flow pump, and the plurality of resonance plates 1 are arranged at intervals along the axial direction of the vertical axial flow pump. Each resonance plate 1 is provided with a first connecting portion 2 at one end away from the pump casing. The first connecting portion 2 can be connected to a slide 9 connected to a vibration sensor 4 to realize vibration transmission, so that the vibration sensor 4 can monitor the vibration condition.

[0025] It also includes a fixing frame, which is fixed on the ground or other fixed platforms (for example, a wall, a cement desk lamp). The fixing frame is vertically provided with a guide groove 11. The setting direction of the guide groove 11 is the same as the vertical direction of the vertical axial flow pump. The slide 9 is slidably set in the guide groove 11. The vibration sensor 4 is fixed on the slide 9. The slide 9 has a second connecting part, which is connected to the first connecting part 2.

[0026] The driving mechanism is connected between the fixed frame and the slide 9 , and drives the slide 9 to move along the guide groove 11 .

[0027] In a further preferred embodiment, three resonance plates 1 are provided, the lowest resonance plate 1 is provided at the suction chamber of the vertical axial flow pump, the middle resonance plate 1 is provided at the middle of the vertical axial flow pump, and the uppermost resonance plate 1 is provided at the outlet elbow of the vertical axial flow pump. These three positions can basically monitor the vibration conditions of the upper and lower main positions of the vertical axial flow pump.

[0028] Of course, the present application is not limited to the above three positions. In actual operation, more resonance plates 1 can be set according to specific circumstances to monitor the vibration conditions of more positions.

[0029] Furthermore, the first connecting portion 2 includes a base plate 201 , which is arranged perpendicular to the resonance plate 1 . The base plate 201 is a square plate, and first connecting holes 202 are correspondingly provided near the four corners of the base plate 201 .

[0030] Furthermore, the slide 9 is square, and the second connection portion is a second connection hole 6. Four second connection holes 6 are provided, and the four second connection holes 6 are correspondingly provided at the four corners of the slide 9. The base plate 201 is connected to the slide 9 by inserting the threaded connector 7 into the second connection hole 6 and the first connection hole 202. When the vibration sensor 4 is moved to the desired position, the second connection hole 6 is aligned with the first connection hole 202. The threaded connector 7 here can be a bolt or a stud. After the threaded connector 7 connects the slide 9 to the resonance plate 1, the vibration generated by the vertical axial flow pump will be transmitted to the vibration sensor 4 through the resonance plate 1, and the vibration condition there will be monitored. When it is necessary to monitor the vibration condition of the next location, the threaded connector 7 is removed, and the driving mechanism drives the screw to rotate, thereby adjusting the position of the vibration sensor 4.

[0031] Furthermore, the slide 9 has a mounting cavity 8, and the vibration sensor 4 is arranged in the mounting cavity 8 and extends out of the mounting cavity 8 on a side close to the resonance plate 1. The vibration sensor 4 not only monitors vibration through the slide 9 and the resonance plate 1, but also detects vibration conditions by directly contacting the resonance plate 1.

[0032] Furthermore, in order to better align the above-mentioned first connecting hole 202 with the second connecting hole 6, a manual multi-section telescopic rod 5 is horizontally provided on the slide 9, and the telescopic rod 5 is set on the lower end surface or the upper end surface of the slide 9. When the vibration sensor 4 is moved, the telescopic rod 5 is manually extended, and its telescopic length is sufficient to contact the resonance plate 1. The vibration sensor 4 moves until the telescopic rod 5 abuts against the resonance plate 1. At this time, the first connecting hole 202 and the second connecting hole 6 are directly aligned, and there is no need to manually adjust the height of the vibration sensor 4 repeatedly, thereby improving the positioning efficiency.

[0033] The reason why the telescopic rod 5 is a manual telescopic rod 5 is to avoid extra vibration caused by electric operation, which would affect the monitoring accuracy of the vibration sensor 4.

[0034] Furthermore, the above-mentioned driving mechanism is specifically a screw 10, the upper end of the screw 10 is rotatably set on the fixed frame through the bearing, and the bottom end thread is set through the slide 9. When the position of the vibration sensor 4 needs to be adjusted, the screw 10 can be manually twisted. The reason why the screw 10 is used for driving here is that, first, the screw 10 has high precision, second, the screw 10 can be directly locked while adjusting, and third, manual adjustment of the screw 10 can avoid the vibration generated by the mechanical adjustment itself, thereby affecting the monitoring of the vibration sensor 4.

[0035] The above specific implementation methods cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or transformation made to the implementation methods of the present utility model falls within the protection scope of the present utility model.

[0036] Anything not described in detail in the present invention is well known to those skilled in the art.

Claims

1. A vibration monitoring device for a vertical axial flow pump, characterized in that: include: a plurality of resonance plates, the plurality of resonance plates being disposed on an outer wall of a pump casing of the vertical axial flow pump and spaced apart along the axial direction of the vertical axial flow pump, each resonance plate being provided with a first connecting portion at an end away from the pump casing; A fixing frame, wherein the fixing frame is vertically provided with a guide groove; a vibration sensor, the vibration sensor being slidably disposed in the guide groove via a slide, the slide being provided with a second connecting portion capable of connecting to the first connecting portion; A driving mechanism is connected between the fixing frame and the slide, and drives the slide to move along the guide groove.

2. A vibration monitoring device for a vertical axial flow pump according to claim 1, characterized in that: Three resonance plates are provided, the lowest resonance plate is provided at the position of the suction chamber of the vertical axial flow pump, the middle resonance plate is provided at the middle of the vertical axial flow pump close to the vertical axial flow pump, and the uppermost resonance plate is provided at the outlet elbow of the vertical axial flow pump.

3. A vibration monitoring device for a vertical axial flow pump according to claim 1, characterized in that: The first connecting portion includes: The substrate is arranged perpendicular to the resonance plate, the substrate is a square plate, and the substrate is provided with first connection holes correspondingly near the four corners thereof.

4. A vibration monitoring device for a vertical axial flow pump according to claim 3, characterized in that: The slide is square, the second connecting portion is a second connecting hole, four second connecting holes are provided, and the four second connecting holes are correspondingly provided at the four corners of the slide. The substrate is connected to the slide by inserting threaded connectors into the second connecting holes and the first connecting holes.

5. A vibration monitoring device for a vertical axial flow pump according to claim 4, characterized in that: The slide seat has a mounting cavity, and the vibration sensor is arranged in the mounting cavity with one end extending out of the mounting cavity.

6. A vibration monitoring device for a vertical axial flow pump according to claim 4, characterized in that: A manual multi-section telescopic rod is horizontally provided on the slide seat, and the telescopic rod is arranged on the lower end surface or the upper end surface of the slide seat.

7. A vibration monitoring device for a vertical axial flow pump according to claim 4, 5 or 6, characterized in that: The driving mechanism comprises: A lead screw, the top end of which is rotatably arranged on the fixing frame, and the other end of which is threadedly passed through the sliding seat.

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