Displacement sensor of centrifugal pump

Abstract

The utility model provides a displacement sensor of a centrifugal pump, which relates to the technical field of centrifugal pumps, and comprises a centrifugal pump, one side of the centrifugal pump is provided with a detection assembly, the detection assembly comprises a mounting plate, the top of the mounting plate is provided with a storage battery, the top of the storage battery is provided with a voltage sensor, and the voltage sensor is arranged on the top of the storage battery. An insulating shell is arranged at the top of the voltage sensor; a sleeve is arranged on the side, away from the centrifugal pump, of the insulation shell, the detection assembly is clamped to the centrifugal pump, the rubber column is aligned to a detection point, when the centrifugal pump generates displacement, the sleeve rod is driven to contract into the sleeve, and due to the fact that the distance between the sleeve rod and the sleeve is changed, the distance between the sleeve rod and the sleeve is changed. At the moment, the voltage between the sleeve rod and the sleeve is detected through the voltage sensor, the resistance between the sleeve rod and the sleeve rod is detected in a phase-changing mode by detecting the voltage, the displacement degree of the centrifugal pump is judged by detecting the numerical value of the resistance, and detection data are more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal pumps, in particular to a displacement sensor for a centrifugal pump. Background Art

[0002] The displacement sensor of the centrifugal pump is mainly used to measure the vibration displacement of the centrifugal pump rotor system. Among them, the eddy current vibration displacement sensor is a commonly used displacement sensor, which can measure the relative displacement change between the measured metal conductor surface and the probe surface statically and dynamically, non-contactly, with high precision and high resolution;

[0003] However, in the existing patents, although the centrifugal pump sensor provides important help in monitoring and controlling the centrifugal pump, it also has some disadvantages, including problems with failure rate, maintenance cost, installation complexity, data processing and interpretation, and adaptability to the environment. Therefore, the utility model proposes a displacement sensor for a centrifugal pump. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings in the prior art and to provide a displacement sensor for a centrifugal pump.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a displacement sensor for a centrifugal pump, comprising a centrifugal pump, a detection assembly is arranged on one side of the centrifugal pump, the detection assembly comprises a mounting plate, a battery is arranged on the top of the mounting plate, a voltage sensor is arranged on the top of the battery, and an insulating shell is arranged on the top of the voltage sensor;

[0006] A sleeve is provided on the side of the insulating shell away from the centrifugal pump, a sleeve rod is slidably connected in the sleeve, a rubber column is provided on one end of the sleeve rod close to the centrifugal pump, a first terminal is provided at the bottom of the sleeve rod, and a second terminal is provided at the bottom of the sleeve.

[0007] As a preferred implementation, a first wire is disposed on the first terminal, the other end of which is electrically connected to a voltage sensor, and a second wire is disposed on the second terminal, the other end of which is electrically connected to a voltage sensor.

[0008] The beneficial effect of adopting the above further scheme is: the first terminal is electrically connected to the voltage sensor through the first wire, and the second terminal is electrically connected to the voltage sensor through the second wire. When the sleeve and the sleeve rod contract, the resistance changes. By judging whether the centrifugal pump is displaced by the difference in resistance change, the monitoring effect of the centrifugal pump is achieved.

[0009] As a preferred embodiment, a ceramic plate is slidably connected inside the sleeve, a spring is provided between the ceramic plate and the sleeve rod, and two ends of the spring are respectively connected to the sleeve rod and the ceramic plate.

[0010] The beneficial effect of adopting the above further solution is that: through the spring arranged between the ceramic plate and the sleeve rod, the rubber column is pushed forward and always fits with the monitoring point of the centrifugal pump, and the ceramic plate is made of insulating material.

[0011] As a preferred implementation, one end of the sleeve away from the centrifugal pump is threadedly connected to a threaded rod, and one end of the threaded rod located inside the sleeve is rotatably connected to the ceramic plate.

[0012] The beneficial effect of adopting the above further scheme is: by rotating the threaded rod, the ceramic plate is further driven to move forward, so that the deformation distance of the spring is reduced. By reducing the deformation distance of the spring, the elasticity of the spring is increased, and the rubber column is further in contact with the detection point of the centrifugal pump, making the detection data more accurate.

[0013] As a preferred implementation manner, the input end of the voltage sensor is electrically connected to the output end of the battery.

[0014] The beneficial effect of adopting the above further solution is that the voltage sensor and other components are powered by the battery.

[0015] As a preferred embodiment, a clamping plate is provided on one side of the mounting plate close to the centrifugal pump, the clamping plate and the centrifugal pump are clamped together, a mounting bolt that passes through the centrifugal pump is threadedly connected to the clamping plate, support rods are provided on both sides of the battery on the mounting plate, and the other ends of the two support rods are connected to the insulating shell.

[0016] The beneficial effect of adopting the above further scheme is: the mounting plate and the centrifugal pump are clamped to each other by the clamping plate, and the mounting plate and the centrifugal pump are further limited by the mounting bolt to prevent the mounting plate and the centrifugal pump from separating during use, and the insulating shell is auxiliary supported by the support rod to improve its stability during use.

[0017] Compared with the prior art, the advantages and positive effects of the utility model are:

[0018] 1. In the utility model, the detection component is clamped on the centrifugal pump and the rubber column is aligned with the detection point. When the centrifugal pump is displaced, the sleeve rod is driven to shrink into the casing. Since the spacing between the sleeve rod and the casing changes, the voltage between the sleeve rod and the casing is detected by the voltage sensor. By detecting the voltage, the resistance between the casing and the sleeve rod is detected in disguise. By detecting the resistance value, the displacement degree of the centrifugal pump is judged, so that the detection data is more accurate.

[0019] 2. In the utility model, the rubber column is pushed forward by the spring arranged between the ceramic plate and the sleeve rod, and is always in contact with the monitoring point of the centrifugal pump. The ceramic plate is made of insulating material, and the ceramic plate is further driven to move forward by rotating the threaded rod, so that the deformation distance of the spring is reduced. By reducing the deformation distance of the spring, the elasticity of the spring is increased, so that the rubber column is further in contact with the detection point of the centrifugal pump, making the detection data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a displacement sensor for a centrifugal pump according to the utility model;

[0021] Figure 2 This is a cross-sectional view of a displacement sensor detection assembly of a centrifugal pump according to the utility model;

[0022] Figure 3 The utility model is a cross-sectional view of a sleeve in a displacement sensor of a centrifugal pump.

[0023] Reference numerals

[0024] 1. Centrifugal pump; 2. First terminal; 21. Second terminal; 22. First wire; 23. Second wire; 3. Detection assembly; 31. Mounting plate; 32. Snap-on plate; 33. Mounting bolt; 34. Battery; 35. Voltage sensor; 36. Support rod; 4. Insulating housing; 41. Sleeve; 42. Sleeve rod; 43. Rubber column; 5. Threaded rod; 51. Ceramic plate; 52. Spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1-3 As shown, the utility model provides a technical solution: a displacement sensor for a centrifugal pump, comprising a centrifugal pump 1, a detection assembly 3 is arranged on one side of the centrifugal pump 1, the detection assembly 3 comprises a mounting plate 31, a battery 34 is arranged on the top of the mounting plate 31, a voltage sensor 35 is arranged on the top of the battery 34, and an insulating shell 4 is arranged on the top of the voltage sensor 35;

[0028] A sleeve 41 is provided on the side of the insulating housing 4 away from the centrifugal pump 1, a sleeve rod 42 is slidably connected inside the sleeve 41, a rubber column 43 is provided on the end of the sleeve rod 42 close to the centrifugal pump 1, a first terminal 2 is provided at the bottom of the sleeve rod 42, and a second terminal 21 is provided at the bottom of the sleeve 41.

[0029] A first wire 22 is provided on the first terminal 2, and the other end of the first wire 22 is electrically connected to the voltage sensor 35. A second wire 23 is provided on the second terminal 21, and the other end of the second wire 23 is electrically connected to the voltage sensor 35. The first terminal 2 and the voltage sensor 35 are electrically connected through the first wire 22, and the second terminal 21 and the voltage sensor 35 are electrically connected through the second wire 23. When the sleeve 41 and the sleeve rod 42 are contracted, the resistance changes. By the difference in resistance change, it is determined whether the centrifugal pump 1 is displaced, thereby achieving the monitoring effect of the centrifugal pump 1.

[0030] Example 2

[0031] like Figure 2-3 As shown, a ceramic plate 51 is slidably connected inside the sleeve 41, a spring 52 is arranged between the ceramic plate 51 and the sleeve rod 42, and both ends of the spring 52 are respectively connected to the sleeve rod 42 and the ceramic plate 51. Through the spring 52 arranged between the ceramic plate 51 and the sleeve rod 42, the rubber column 43 is pushed forward and always fits with the monitoring point of the centrifugal pump 1, and the ceramic plate 51 is made of insulating material.

[0032] One end of the sleeve 41 away from the centrifugal pump 1 is threadedly connected to a threaded rod 5, and one end of the threaded rod 5 located inside the sleeve 41 is rotatably connected to the ceramic plate 51. The ceramic plate 51 is further driven forward by rotating the threaded rod 5, so that the deformation distance of the spring 52 is reduced. By reducing the deformation distance of the spring 52, the elasticity of the spring 52 is increased, and the rubber column 43 is further in contact with the detection point of the centrifugal pump 1, so that the detection data is more accurate.

[0033] The input end of the voltage sensor 35 is electrically connected to the output end of the battery 34 , and the battery 34 is used to supply power to the voltage sensor 35 and other components.

[0034] A clamping plate 32 is provided on one side of the mounting plate 31 close to the centrifugal pump 1, and the clamping plate 32 and the centrifugal pump 1 are clamped together. A mounting bolt 33 that penetrates the centrifugal pump 1 is threadedly connected to the clamping plate 32. Support rods 36 are provided on both sides of the mounting plate 31 located on the battery 34, and the other ends of the two support rods 36 are connected to the insulating shell 4. The mounting plate 31 and the centrifugal pump 1 are clamped together by the clamping plate 32, and the mounting bolt 33 is further used to limit the mounting plate 31 and the centrifugal pump 1 to prevent the mounting plate 31 from separating from the centrifugal pump 1 during use. The insulating shell 4 is auxiliary supported by the support rod 36 to improve its stability during use.

[0035] Working principle:

[0036] like Figure 1-3 As shown, the mounting plate 31 and the centrifugal pump 1 are mutually clamped by the clamping plate 32, and the mounting bolt 33 is further used to limit the position between the mounting plate 31 and the centrifugal pump 1. The ceramic plate 51 is driven to move forward by rotating the threaded rod 5, so that the deformation distance of the spring 52 is reduced. By reducing the deformation distance of the spring 52, the elasticity of the spring 52 is increased, so that the rubber column 43 is closely fitted with the detection point of the centrifugal pump 1. When the centrifugal pump 1 is displaced, the sleeve rod 42 is driven to shrink into the sleeve 41. Since the spacing between the sleeve rod 42 and the sleeve 41 changes, the voltage between the sleeve rod 42 and the sleeve 41 is detected by the voltage sensor 35 at this time. By detecting the voltage, the resistance between the sleeve 41, the sleeve 41 and the sleeve rod 42 is detected in disguised form. By detecting the resistance value, the displacement degree of the centrifugal pump 1 is judged.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A displacement sensor for a centrifugal pump, comprising a centrifugal pump (1), characterized in that: A detection assembly (3) is provided on one side of the centrifugal pump (1), the detection assembly (3) comprises a mounting plate (31), a battery (34) is provided on the top of the mounting plate (31), a voltage sensor (35) is provided on the top of the battery (34), and an insulating housing (4) is provided on the top of the voltage sensor (35); A sleeve (41) is provided on a side of the insulating housing (4) away from the centrifugal pump (1), a sleeve rod (42) is slidably connected inside the sleeve (41), a rubber column (43) is provided on one end of the sleeve rod (42) close to the centrifugal pump (1), a first terminal (2) is provided at the bottom of the sleeve rod (42), and a second terminal (21) is provided at the bottom of the sleeve (41).

2. A displacement sensor for a centrifugal pump according to claim 1, characterized in that: A first wire (22) is provided on the first terminal (2), and the other end of the first wire (22) is electrically connected to a voltage sensor (35); a second wire (23) is provided on the second terminal (21), and the other end of the second wire (23) is electrically connected to a voltage sensor (35).

3. A displacement sensor for a centrifugal pump according to claim 1, characterized in that: A ceramic plate (51) is slidably connected inside the sleeve (41), a spring (52) is provided between the ceramic plate (51) and the sleeve rod (42), and two ends of the spring (52) are respectively connected to the sleeve rod (42) and the ceramic plate (51).

4. A displacement sensor for a centrifugal pump according to claim 1, characterized in that: One end of the sleeve (41) away from the centrifugal pump (1) is threadedly connected to a threaded rod (5), and one end of the threaded rod (5) located inside the sleeve (41) is rotatably connected to a ceramic plate (51).

5. The displacement sensor for a centrifugal pump according to claim 1, characterized in that: The input end of the voltage sensor (35) is electrically connected to the output end of the battery (34).

6. A displacement sensor for a centrifugal pump according to claim 1, characterized in that: A clamping plate (32) is provided on one side of the mounting plate (31) close to the centrifugal pump (1), the clamping plate (32) and the centrifugal pump (1) are clamped to each other, a mounting bolt (33) that passes through the centrifugal pump (1) is threadedly connected to the clamping plate (32), and support rods (36) are provided on both sides of the battery (34) on the mounting plate (31), and the other ends of the two support rods (36) are connected to the insulating housing (4).

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