Water pump pulse monitoring unit

Abstract

The utility model relates to the technical field of water pump pulsation monitoring, in particular to a water pump pulsation monitoring unit which comprises a water pump body composed of a pump body motor and a volute, a vibration sensor is fixedly installed on the inner side of a hollow ring, and a first pressure sensor is fixedly installed on the top of a water inlet pipe. A flow sensor is fixedly installed at the bottom of the water inlet pipe, a second pressure sensor is fixedly installed outside the water drainage pipe, and an electromagnetic flowmeter is fixedly installed at the top of the water drainage pipe. According to the water pump pulsation monitoring unit, vibration data of the transmission shaft are detected through the eddy current sensing probe of the vibration sensor, data support is provided for pressure pulsation data analysis, and water pressure and flow velocity data of the water inlet pipe are detected through the first pressure sensor and the flow sensor; and then the second pressure sensor is used for detecting water pressure data at the drainage pipe, pulsating flow data are rapidly detected through the electromagnetic flowmeter, and the data accuracy is improved through comparative analysis.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump pulsation monitoring technical field, concretely is a kind of water pump pulsation monitoring unit. BACKGROUND

[0002] Water pump is a kind of liquid conveying or making liquid pressure increasing machine, it transmits the mechanical energy of prime mover or other external energy to liquid, makes liquid energy increase, mainly used to transport water, oil, acid and alkali liquid, emulsion, suspension emulsion and liquid metal and so on various liquid, the main body structure of water pump mainly includes driving structure and pump body (i.e. volute), when pump body power acts on internal fluid unevenly, fluid can generate relatively concentrated or larger pressure, and possibly present certain periodicity, i.e. pressure pulsation, pressure pulsation can cause pump body structure to vibrate sharply, seriously affect the stability and normal operation of water pump unit.

[0003] According to the utility model patent with Chinese patent publication No. CN212106226U, a kind of installation structure of water pump unit pressure pulsation sensor is disclosed, the installation structure of water pump unit pressure pulsation sensor in the utility model patent is by directly installing pressure pulsation sensor on pump body structure, without through conversion can detect the real-time data of pressure pulsation in water pump;

[0004] But pulsation flow single duration is short, and it needs to detect element fast response detection, since its pulsation amplitude is larger, it is not suitable for general detection element, and the pressure pulsation sensor in the water pump unit only carries out single detection to certain data, cannot collect and compare the fluid data of water pump unit inlet and outlet, therefore, the structure of detecting pressure pulsation data still needs to be further improved, so a kind of water pump pulsation monitoring unit is provided. UTILITY MODEL CONTENT

[0005] In view of the deficiencies of the prior art, the utility model provides a water pump pulsation monitoring unit, which has the advantages of facilitating the collection and comparison of water flow data at the inlet and outlet of the water pump, and improving data accuracy. The installation structure of the pressure pulsation sensor of the water pump unit in the above background technology can only collect data from a single position, and cannot improve data accuracy through data comparison.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a water pump pulsation monitoring unit, comprising a water pump body composed of a pump body motor and a volute, a water inlet pipe is fixedly connected to the right side center of the volute, a drain pipe is fixedly connected to the back of the volute, and an pulsation monitoring structure is provided on the outside of the volute.

[0007] The pulsation monitoring structure comprises a hollow ring fixedly installed on the left side of the volute, a vibration sensor fixedly installed on the inner side of the hollow ring, a first pressure sensor fixedly installed on the top of the water inlet pipe, a flow sensor fixedly installed on the bottom of the water inlet pipe, a second pressure sensor fixedly installed on the outside of the drain pipe, and an electromagnetic flowmeter fixedly installed on the top of the drain pipe.

[0008] Further, the output end of the pump body motor is fixedly connected with a transmission shaft, the inner left wall of the volute is rotationally connected with an impeller, and the right end of the transmission shaft is coaxially fixed with the impeller.

[0009] Further, the hollow ring is located on the outside of the transmission shaft, the number of the vibration sensors is two, the two vibration sensors are symmetrically distributed along the axis of the transmission shaft, and each of the two vibration sensors is provided with an eddy current induction probe on the opposite side, the inside of each eddy current induction probe is an eddy current coil structure, and the two vibration sensors are electrically connected with an Ethernet interface through a cable.

[0010] Further, the outside of the water inlet pipe is coaxially sleeved with a first sleeve block, the bottom of the first pressure sensor is provided with a first pressure-sensitive probe, the first pressure-sensitive probe penetrates through the top of the first sleeve block and extends into the inside of the water inlet pipe, and the flow sensor and the first pressure sensor are signal connected with the Ethernet interface.

[0011] Further, the inside of the flow sensor comprises a Hall element and a rotor assembly, the top of the rotor assembly penetrates through the bottom of the first sleeve block and extends into the inside of the water inlet pipe, and the rotor assembly is a magnetic structure at the end close to the Hall element.

[0012] Further, the outside of the drain pipe is coaxially sleeved with a second sleeve block, the rear end of the second pressure sensor is provided with a second pressure-sensitive probe, the second pressure-sensitive probe penetrates through the front surface of the second sleeve block and extends into the inside of the drain pipe, and the second pressure sensor and the electromagnetic flowmeter are signal connected with the Ethernet interface.

[0013] Further, the electromagnetic flowmeter comprises a through pipe structure sealingly connected with the top of the drain pipe through a flange plate, the inner wall of the through pipe is paved with an insulating inner lining layer, the inside of the electromagnetic flowmeter is provided with a transducer, the outside of the through pipe is symmetrically provided with two excitation coil groups, each of the two excitation coil groups is provided with a detection electrode on the side facing the insulating inner lining layer, and the transducer is electrically connected with the two detection electrodes.

[0014] Beneficial effects

[0015] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0016] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:The water pump pulsation monitoring unit detects the vibration data of the transmission shaft through the vortex induction probe of the vibration sensor, provides data support for pressure pulsation data analysis, installs a first pressure sensor and a flow sensor at the water inlet pipe respectively, detects the water pressure and flow rate data of the water inlet pipe, then detects the water pressure data at the drain pipe using a second pressure sensor, and connects the electromagnetic flowmeter with the drain pipe through a flange, based on the electromagnetic induction principle of the electromagnetic flowmeter, realizes high-speed acquisition and detection of pulsation flow data, and uploads the data to the water pump data detection system through the cable access Ethernet interface at the water inlet pipe, and improves the pressure pulsation data accuracy through comparison and analysis. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional view of the water pump body structure of the utility model;

[0018] Figure 2 It is a schematic view of the water pump body structure of the utility model;

[0019] Figure 3 It is Figure 1 It is a schematic view of the water inlet pipe structure in the perspective view;

[0020] Figure 4 It is Figure 1 It is a left view of the volute structure in the perspective view;

[0021] Figure 5 It is Figure 1 It is a right view of the volute structure in the perspective view.

[0022] In the figure: 1, water pump body; 101, pump body motor; 102, volute; 2, water inlet pipe; 3, drain pipe; 4, pulsation monitoring structure; 401, hollow ring; 402, vibration sensor; 403, first pressure sensor; 404, flow sensor; 405, second pressure sensor; 406, electromagnetic flowmeter; 5, transmission shaft; 6, impeller. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] Please refer to Figures 1-5The utility model provides a kind of water pump pulsation monitoring unit, including the water pump body 1 of pump body motor 101 and volute 102, the right side center of volute 102 is fixedly connected with water inlet pipe 2, water inlet pipe 2 access pumping end, the back of volute 102 is fixedly connected with drain pipe 3, drain pipe 3 access water delivery end, volute 102 The outside of is provided with pulsation monitoring structure 4, the output of pump body motor 101 is fixedly connected with transmission shaft 5, the inner left wall of volute 102 is rotatably connected with impeller 6, pump body motor 101 drives transmission shaft 5 to drive impeller 6 high-speed rotation.

[0025] Pulsation monitoring structure 4 includes hollow ring 401 fixedly installed on the left side of volute 102, the inside of hollow ring 401 is fixedly installed with vibration sensor 402, the top of water inlet pipe 2 is fixedly installed with first pressure sensor 403, and the water pressure data at water inlet pipe 2 is collected by first pressure sensor 403, the bottom of water inlet pipe 2 is fixedly installed with flow sensor 404, and the flow and flow rate data at water inlet pipe 2 are collected by flow sensor 404, the outside of drain pipe 3 is fixedly installed with second pressure sensor 405, and the water pressure data at drain pipe 3 is collected by second pressure sensor 405, the top of drain pipe 3 is fixedly installed with electromagnetic flowmeter 406, and electromagnetic flowmeter 406 collects pulsation flow data.

[0026] According to Figure 2 And Figure 3 It is shown that pump body motor 101 and volute 102 are fixed on base to form water pump body 1, transmission shaft 5 is driven by pump body motor 101, and impeller 6 in volute 102 is driven to rotate at high speed, to provide power for internal water flow.

[0027] According to Figure 3 It is shown that the two symmetrical vortex induction probes are all eddy current coil structures, can form alternating induction magnetic field around transmission shaft 5, when tiny vibration occurs in the process that transmission shaft 5 rotates at high speed, the distance between transmission shaft 5 and both sides vortex induction probe will change relatively at this time, to cause the change of coil impedance data, changes from impedance change signal to electric signal, is uploaded to detection system through cable access Ethernet interface, to accurately detect the tiny displacement and vibration data of transmission shaft 5.

[0028] According to Figure 4 And Figure 5 It is shown that first pressure sensor 403 is contacted with internal water flow by No. 1 pressure sensitive probe, and resistance change signal is generated by exerting pressure on No. 1 pressure sensitive probe, and corresponding electric signal is converted from resistance change signal and uploaded to detection system, to detect the water pressure data at water inlet pipe 2;

[0029] The rotor assembly of the flow sensor 404 rotates rapidly with the water flow, at this time, the magnetic end of the rotor assembly generates a rotating magnetic field with different magnetic poles, and the Hall element generates a magnetic field orthogonal to the current direction after being powered on, thereby cutting the magnetic induction line to generate high and low pulse levels. The frequency of the output pulse signal of the Hall element is proportional to the rotation speed of the rotor assembly, and the rotation speed of the rotor assembly is proportional to the flow rate of the water flow, thereby detecting the flow rate and flow speed data at the inlet pipe 2.

[0030] According to Figure 4 and Figure 5 As shown, the second pressure sensor 405 is connected to the inside of the drain pipe 3 through the No. 2 pressure sensitive probe, and then the water flow is discharged into the pipe of the electromagnetic flowmeter 406, at this time, the energized coil group generates a magnetic field perpendicular to the direction of the water flow, and the energized detection electrode contacts the water flow. After the water flow is powered on, the magnetic field is cut to generate an induced potential, which is amplified and processed by the converter and then transmitted to the detection system, thereby detecting the pressure pulsation data at the drain pipe 3.

[0031] In summary, the water pump pulsation monitoring unit detects the vibration data of the transmission shaft 5 through the vortex induction probe of the vibration sensor 402 to provide data support for pressure pulsation data analysis. First, the first pressure sensor 403 and the flow sensor 404 are respectively installed at the inlet pipe 2 to detect the water pressure and flow rate data of the inlet pipe 2, then the second pressure sensor 405 is used to detect the water pressure data at the drain pipe 3, and the electromagnetic flowmeter 406 is connected to the drain pipe 3 through the flange. Based on the principle of electromagnetic induction of the electromagnetic flowmeter 406, high-speed acquisition and detection of pulsating flow data are realized, and the data at the inlet pipe 2 is uploaded to the water pump data detection system through the cable access Ethernet interface, and the accuracy of the pressure pulsation data is improved through comparison and analysis, solving the problem that the installation structure of the water pump unit pressure pulsation sensor in the above background technology can only collect data from a single part, and cannot further improve the data accuracy through data comparison.

[0032] It should be noted that, in the present text, relational terms such as first and second and the like can only be used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article or apparatus including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or apparatus. Without more limitations, the element defined by the statement "comprises a" does not exclude the presence of additional identical elements in the process, method, article or apparatus including the element.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water pump pulsation monitoring unit comprising a water pump body (1) consisting of a pump body motor (101) and a volute (102), characterized in that: The right side of the volute (102) is fixedly connected with a water inlet pipe (2), the back of the volute (102) is fixedly connected with a drain pipe (3), and the outer side of the volute (102) is provided with a pulsation monitoring structure (4); The pulsation monitoring structure (4) comprises a hollow ring (401) fixedly installed on the left side of the volute (102), a vibration sensor (402) fixedly installed on the inner side of the hollow ring (401), a first pressure sensor (403) fixedly installed on the top of the water inlet pipe (2), a flow sensor (404) fixedly installed on the bottom of the water inlet pipe (2), a second pressure sensor (405) fixedly installed on the outside of the drain pipe (3), and an electromagnetic flowmeter (406) fixedly installed on the top of the drain pipe (3).

2. A water pump pulsation monitoring unit according to claim 1, characterized in that: The output end of the pump body motor (101) is fixedly connected with a transmission shaft (5), the inner left wall of the volute (102) is rotatably connected with an impeller (6), and the right end of the transmission shaft (5) is coaxially fixed with the impeller (6).

3. A water pump pulsation monitoring unit according to claim 2, characterized in that: The hollow ring (401) is located on the outer side of the transmission shaft (5), the number of the vibration sensors (402) is two, the two vibration sensors (402) are symmetrically distributed along the axis of the transmission shaft (5), and each of the two vibration sensors (402) is provided with an eddy current induction probe on the opposite side, each of the eddy current induction probes is internally provided with an eddy current coil structure, and the two vibration sensors (402) are electrically connected with an Ethernet interface through a cable.

4. A water pump pulsation monitoring unit according to claim 3, characterized in that: The outside of the water inlet pipe (2) is coaxially sleeved with a first sleeve block, the bottom of the first pressure sensor (403) is provided with a first pressure sensitive probe, the first pressure sensitive probe penetrates through the top of the first sleeve block and extends into the inside of the water inlet pipe (2), and the flow sensor (404) and the first pressure sensor (403) are signal connected with the Ethernet interface.

5. A water pump pulsation monitoring unit according to claim 4, characterized in that: The inside of the flow sensor (404) comprises a Hall element and a rotor assembly, the top of the rotor assembly penetrates through the bottom of the first sleeve block and extends into the inside of the water inlet pipe (2), and the rotor assembly is provided with a magnetic structure at the end close to the Hall element.

6. A water pump pulsation monitoring unit according to claim 2, characterized in that: The outside of the drain pipe (3) is coaxially sleeved with a second sleeve block, the rear end of the second pressure sensor (405) is provided with a second pressure sensitive probe, the second pressure sensitive probe penetrates through the front of the second sleeve block and extends into the inside of the drain pipe (3), and the second pressure sensor (405) and the electromagnetic flowmeter (406) are signal connected with the Ethernet interface.

7. A water pump pulsation monitoring unit according to claim 1, characterized in that: The electromagnetic flowmeter (406) comprises a through pipe structure sealingly connected with the top of the drain pipe (3) through a flange plate, the inner wall of the through pipe is paved with an insulating inner lining layer, the inside of the electromagnetic flowmeter (406) is provided with a transducer, the outside of the through pipe is symmetrically provided with two excitation coil groups, each of the two excitation coil groups is provided with a detection electrode on the side facing the insulating inner lining layer, and the transducer is electrically connected with the two detection electrodes.

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