CN114294194B - Axial plunger type high-pressure water pump - Google Patents
Axial plunger type high-pressure water pump Download PDFInfo
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Abstract
The invention belongs to the field of high-pressure water pumps, relates to a water pump operation monitoring technology, and is used for solving the problem that the service life early warning analysis cannot be performed when the existing high-pressure water pump is abnormal in working state, and in particular relates to an axial plunger type high-pressure water pump, which comprises a front end cover and a rear end cover, wherein a shell is fixedly arranged between the side surfaces of the front end cover, the rear end cover, which are close to each other, a floating disc and a valve plate are arranged between the side surfaces of a cylinder body, which are close to each other, a pin roll is fixedly arranged on the side surface of the floating disc, which is close to the valve plate, a spring seat and a central spring are arranged in the cylinder body, an elastic retainer ring is arranged between one side of the spring seat, which is far away from the central spring, and the floating disc, and a plunger slipper is arranged in the cylinder body; the invention monitors the running state of the high-pressure water pump in real time through the running analysis module, and performs emergency shutdown processing through the controller cut-off circuit under the condition of neglecting by a manager so as to provide running protection for the high-pressure water pump.
Description
Technical Field
The invention belongs to the field of high-pressure water pumps, relates to a water pump operation monitoring technology, and particularly relates to an axial plunger type high-pressure water pump.
Background
The high-pressure water pump has various types, and the miniature high-pressure water pump with the widest application has the advantages of high pressure, small volume, convenient carrying and the like, and is commonly used for cleaning, spraying, sprinkling, pressurizing, pumping and the like;
the patent of the invention with the publication number of CN102536774B discloses an industrial circulating water pump group operation characteristic and operation energy efficiency analysis device, wherein the operation energy efficiency analysis device monitors and analyzes the operation characteristic and operation energy efficiency of a water pump and a pump group under the conditions of variable working conditions and operation modes, and can intuitively, visually and real-timely give out the operation characteristic and operation energy efficiency parameters of the water pump and the pump group in a chart form through a control system interface, and perform continuous analysis;
however, the water pump operation energy efficiency analysis device cannot analyze the working state of the water pump by combining the parameters of the water pump during operation, cannot perform life early warning analysis on the water pump when the working state of the water pump is abnormal, cannot monitor the life of the high-pressure water pump in real time, cannot timely early warn when the water pump is scrapped, and has certain potential safety hazards when affecting the normal operation of the pump set;
in view of the technical drawbacks of this aspect, a solution is now proposed.
Disclosure of Invention
The invention aims to provide an axial plunger type high-pressure water pump, which is used for solving the problem that the service life early warning analysis cannot be carried out when the working state of the existing high-pressure water pump is abnormal.
The technical problems to be solved by the invention are as follows: how to provide an axial plunger type high-pressure water pump capable of carrying out state detection and life early warning in real time.
The aim of the invention can be achieved by the following technical scheme:
the axial plunger type high-pressure water pump comprises a front end cover and a rear end cover, wherein a shell is fixedly arranged between the side surfaces of the front end cover and the rear end cover, a cylinder body is arranged between the inner walls of the shell, a floating disc and a valve plate are arranged between the side surfaces of the cylinder body and the rear end cover, a pin shaft is fixedly arranged on the side surface of the floating disc, which is close to the valve plate, a spring seat and a central spring are arranged in the cylinder body, an elastic retainer ring is arranged between one side, which is far away from the central spring, of the spring seat and the floating disc, and a plunger sliding shoe is arranged in the cylinder body;
the outer surface of the shell is provided with a processor, and the processor is in communication connection with an operation analysis module, a life early warning module, a storage module and a controller;
the operation analysis module is used for detecting and analyzing the state of the high-pressure water pump during operation: dividing the running time of the high-pressure water pump into a period i, i=1, 2, …, n and n are positive integers, acquiring the vibration amplitude and the vibration frequency of the high-pressure water pump in the period i and marking the vibration amplitude and the vibration frequency as ZFi and ZPi respectively when the high-pressure water pump runs, and calculating the vibration amplitude ZFi and the vibration frequency ZPi to obtain a vibration coefficient ZXi; acquiring a noise value generated by the high-pressure water pump in the period i and marking the noise value as a noise value ZSI;
analyzing and judging whether the running state of the high-pressure water pump in the period i meets the requirement or not through a state analysis model;
the service life early warning module is used for carrying out early warning analysis on the service life of the high-pressure water pump.
Further, the floating disc is arranged on one side close to the cylinder body, the valve plate is arranged on one side close to the rear end cover, and o-shaped rings are arranged at the joints of the shell, the front end cover and the rear end cover; the center spring is sleeved on the outer surface of the spring seat.
Further, the establishing process of the state analysis model comprises the following steps: through the storage module early warning threshold value YJMax and the shutdown threshold value TJMax, the numerical calculation process of the early warning threshold value YJMax comprises the following steps: obtaining a vibration threshold ZXmax and a noise threshold ZSmax, and obtaining an early warning threshold YJmax through a formula YJmax=β1×ZXmax+β2×ZSmax; the initial numerical calculation process of the shutdown threshold TJmax includes: obtaining a shutdown threshold TJMax through a formula TJMax=t1×YJMax, wherein t1 is a proportionality coefficient, and t1 is more than or equal to 1.25 and less than or equal to 1.35; establishing a rectangular coordinate system by taking a vibration coefficient as an X axis and a noise value as a Y axis, drawing a circle by taking an origin of the rectangular coordinate system as a circle center and an early warning threshold YJMax as a radius, and marking a quarter of circular arc in a first quadrant of the rectangular coordinate system as an early warning curve; and drawing a circle by taking the origin of the rectangular coordinate system as the circle center and taking the shutdown threshold TJMax as the radius, and marking a quarter of the circular arc in the first quadrant of the rectangular coordinate system as a shutdown curve.
Further, the process of determining whether the running state of the high-pressure water pump in the period i meets the requirement by the state analysis model comprises the following steps: marking the time interval i in a rectangular coordinate system according to the values of the vibration coefficient ZXi and the noise value ZSi and marking the marked point as an analysis point;
analyzing the position of the analysis point:
if the analysis point is positioned in the early warning curve, judging that the corresponding time period is a normal time period;
if the analysis point is located between the early warning curve and the shutdown curve, judging that the corresponding time period is an abnormal time period and the abnormal grade is a second grade, sending a state early warning signal to the processor by the state analysis module, sending the state early warning signal to a mobile phone terminal of a manager after the processor receives the state early warning signal, and simultaneously generating a second-grade life analysis signal by the processor and sending the second-grade life analysis signal to the life early warning module;
if the analysis point is located outside the shutdown curve, judging that the corresponding time period is an abnormal time period and the abnormal grade is a grade, sending a shutdown signal to a processor by a state analysis module, sending the shutdown signal to a controller and a storage module after the processor receives the shutdown signal, generating a primary life analysis signal by the processor and sending the primary life analysis signal to a life early warning module, cutting off a control circuit of the high-pressure water pump after the controller receives the shutdown signal, and obtaining a new shutdown threshold TJnew by a formula TJnew=t2×TJmax after the storage module receives the shutdown signal, wherein t2 is a proportionality coefficient, and t2 is more than or equal to 0.85 and less than or equal to 0.95; and replacing and storing the value of the new shutdown threshold TJnew to the value of the shutdown threshold TJmax.
Further, after receiving the primary life analysis signal, the life early-warning module performs primary early-warning analysis on the service life of the high-pressure water pump: the method comprises the steps of obtaining a shutdown threshold TJMax and an early warning threshold YJMax through a storage module, and comparing the values of the shutdown threshold TJMax and the early warning threshold YJMax:
if the shutdown threshold Tjmax is smaller than or equal to the early warning threshold Yjmax, judging that the primary life early warning analysis result of the high-pressure water pump is unqualified, and sending a rejection signal to a processor by the life early warning module;
if the shutdown threshold value YJMax is larger than the early warning threshold value YJMax, the primary service life early warning analysis result of the high-pressure water pump is judged to be qualified.
Further, after receiving the secondary service life analysis signal, the service life early-warning module carries out secondary early-warning analysis on the service life of the high-pressure water pump: obtaining a vibration coefficient ZX and a noise value ZS of an abnormal period, obtaining the time when a service life early warning module receives a secondary service life analysis signal last time, marking the time as analysis time, and marking the difference value between the current system time and the analysis time as analysis time length FS;
the life coefficient SM of the high-pressure water pump is obtained through a formula SM= (gamma 1 x ZX+gamma 2 x ZS)/(gamma 3 x FS), a life threshold SMmax is obtained through a storage module, and the life coefficient SM of the high-pressure water pump is compared with the life threshold SMmax:
if the life coefficient SM is smaller than or equal to the life threshold SMmax, judging that the secondary life early-warning analysis result of the high-pressure water pump is qualified;
if the life coefficient SM is larger than the life threshold SMmax, judging that the secondary life early-warning analysis result of the high-pressure water pump is unqualified, and sending a rejection signal to the processor by the life early-warning module.
Further, the working method of the axial plunger type high-pressure water pump comprises the following steps:
step one: flushing the high-pressure water pump before the high-pressure water pump works, removing impurities in a pipeline through flushing water flow, unscrewing an exhaust plug after the cleaning is finished, screwing the exhaust plug after water is discharged, and starting the high-pressure water pump to work;
step two: in the working process of the high-pressure water pump, detecting and analyzing the state of the high-pressure water pump during operation through an operation analysis module, establishing a rectangular coordinate system through a vibration coefficient and a noise value by a state analysis model, drawing an early warning curve and a shutdown curve, marking points in the rectangular coordinate system according to the vibration coefficient and the noise value of a time period, and judging whether the time period is abnormal or not through the position relation between the marking points and the early warning curve and the shutdown curve;
step three: when the abnormal level of the time period is a second level, the processor generates a second-level life analysis signal and sends the second-level life analysis signal to the life early-warning module, and the life early-warning module carries out second-level early-warning analysis on the service life of the high-pressure water pump after receiving the second-level life analysis signal;
step four: when the abnormal grade of the time period is one grade, the processor generates a primary life analysis signal and sends the primary life analysis signal to the life early-warning module, and the life early-warning module carries out primary early-warning analysis on the service life of the high-pressure water pump after receiving the primary life analysis signal;
step five: when the primary life early-warning analysis result or the secondary life early-warning analysis result of the high-pressure water pump is unqualified, the life early-warning module sends a rejection signal to the processor, and the processor sends the rejection signal to a mobile phone terminal of a manager after receiving the rejection signal.
The invention has the following beneficial effects:
1. the operation analysis module is used for monitoring the operation state of the high-pressure water pump in real time, the operation time of the high-pressure water pump is subjected to time period analysis, the timeliness of the detection result of the operation state of the water pump is guaranteed, an abnormal signal is generated at the first time when the water pump works abnormally, meanwhile, an early warning curve and a shutdown curve are established through the state analysis model, the intuitiveness and objectivity of the detection result are improved through state analysis in a punctuation mode, different signals are generated through punctuation at different positions, when a manager receives the early warning signal and does not process the early warning signal in time, the water pump is continuously operated in the abnormal state to accelerate the ageing of equipment, so that the emergency shutdown processing is carried out through a controller cut-off circuit under the condition that the manager ignores the water pump, and meanwhile, the shutdown threshold is regulated in an equal proportion, and the operation protection is provided for the high-pressure water pump;
2. the life of the high-pressure water pump is subjected to early warning analysis through the life early warning module, the residual life of the high-pressure water pump is monitored and early warned in different analysis modes when the primary life analysis signal and the secondary life analysis signal are received, the life of the high-pressure water pump is monitored in a mode of combining early warning frequency analysis and stop frequency analysis, early warning is timely carried out when the life of the high-pressure water pump is abnormal, and the problem that the pump unit normally works due to the fact that the water pump is suddenly scrapped is avoided.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front cross-sectional view of a structure according to a first embodiment of the present invention;
FIG. 2 is a system block diagram of a second embodiment of the present invention;
fig. 3 is a flowchart of a method according to a third embodiment of the present invention.
In the figure: 1. a front end cover; 2. a rear end cover; 3. a housing; 4. a cylinder; 5. a floating disc; 6. a port plate; 7. a pin shaft; 8. a spring seat; 9. a center spring; 10. plunger slipper.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 1, an axial plunger type high-pressure water pump comprises a front end cover 1 and a rear end cover 2, wherein a shell 3 is fixedly arranged between the side surfaces of the front end cover 1 and the rear end cover 2, which are close to each other, two symmetrical exhaust plugs are arranged outside the shell 3, the high-pressure water pump is flushed before working, impurities in a pipeline are removed through flushing water flow, the exhaust plugs are unscrewed after flushing is completed, the water pump is filled with water when water is discharged, at the moment, the exhaust plugs are screwed up, a cylinder body 4 is arranged between the inner walls of the shell 3, a floating disc 5 and a valve disc 6 are arranged between the side surfaces of the cylinder body 4 and the rear end cover 2, which are close to each other, the valve disc 5 is arranged on one side, which is close to the cylinder body 4, the valve disc 6 is arranged on one side, which is close to the rear end cover 2, a pin shaft 7 is fixedly arranged on the side, which is close to the valve disc 6, a spring seat 8 and a central spring 9 are sleeved on the outer surface of the spring seat 8, an elastic shoe 10 is arranged between one side, which is far from the central spring 9, of the spring seat 8 and the floating disc 5, and the cylinder body 4 is internally provided with a plunger shoe 3, and the connection part of the shell 3 and the front end cover 2 are arranged at the same place.
Example two
As shown in fig. 2, the outer surface of the housing 3 is further provided with a processor, and the processor is communicatively connected with an operation analysis module, a life early warning module, a storage module and a controller.
The operation analysis module is used for detecting and analyzing the state of the high-pressure water pump during operation: dividing the running time of the high-pressure water pump into a period i, i=1, 2, …, n and n are positive integers, obtaining the vibration amplitude and the vibration frequency of the high-pressure water pump in the period i and marking the vibration amplitude and the vibration frequency as ZFi and ZPi respectively when the high-pressure water pump runs, obtaining the vibration coefficient ZXi of the high-pressure water pump through a formula ZXi =α1x ZFi +α2x ZPi, wherein the vibration coefficient ZXi is a numerical value representing the apparent degree of vibration when the high-pressure water pump runs, the higher the numerical value of the vibration coefficient ZXi is, the more obvious the vibration is generated when the high-pressure water pump runs in the period i, the worse the working state of the high-pressure water pump is, wherein the α1 and the α2 are both proportional coefficients, and the α1 is larger than α2 is larger than 0; acquiring a noise value generated by the high-pressure water pump in the period i and marking the noise value as a noise value ZSI; the vibration amplitude and the vibration frequency are directly detected and obtained by the vibration gyroscope, the vibration gyroscope senses angular motion by utilizing the Goldahl effect generated when the high-frequency vibrating mass is driven to rotate by the base, and the main body of the vibration gyroscope is a component for high-frequency vibration and has the advantages of stable performance, simple structure, high reliability, high bearing capacity and the like; the noise value is directly acquired by a noise tester, the noise tester is used for noise detection and testing in public places such as working sites and squares, noise pollution is one of the environmental pollution with great influence, and noise with high decibels can even cause serious damage to the eardrum of a person, so that hearing loss and the like are caused, and the application of the noise tester can provide the decibels reached by the noise so as to take relevant measures to control and reduce the noise.
Judging whether the running state of the high-pressure water pump in the period i meets the requirement or not through a state analysis model: through the storage module early warning threshold value YJMax and the shutdown threshold value TJMax, the early warning threshold value is obtained through calculation by the vibration threshold value and the noise threshold value, the vibration threshold value and the noise threshold value are maximum values of vibration frequency and noise when the high-pressure water pump works normally, and the numerical calculation process of the early warning threshold value YJMax comprises the following steps: obtaining a vibration threshold ZXmax and a noise threshold ZSmax, and obtaining an early warning threshold YJmax through a formula YJmax=β1×ZXmax+β2×ZSmax, wherein β1 and β2 are proportionality coefficients, and β1 is larger than β2 and larger than 1; the initial numerical calculation process of the shutdown threshold TJmax includes: obtaining a shutdown threshold TJMax through a formula TJMax=t1×YJMax, wherein the calculation mode is an initial shutdown threshold calculation mode, after a processor sends a shutdown signal to a storage module, the storage module generates a new shutdown threshold to carry out numerical replacement, and the replaced shutdown threshold can be directly obtained through the storage module, wherein t1 is a proportionality coefficient, and t1 is more than or equal to 1.25 and less than or equal to 1.35; establishing a rectangular coordinate system by taking a vibration coefficient as an X axis and a noise value as a Y axis, drawing a circle by taking an origin of the rectangular coordinate system as a circle center and an early warning threshold YJMax as a radius, and marking a quarter of circular arc in a first quadrant of the rectangular coordinate system as an early warning curve; drawing a circle by taking the origin of a rectangular coordinate system as a circle center and taking a shutdown threshold TJMax as a radius, marking a quarter of circular arcs in a first quadrant of the rectangular coordinate system as a shutdown curve, marking a point in the rectangular coordinate system according to the values of a vibration coefficient ZXi and a noise value ZSI in a period i, marking the marked point as an analysis point, and analyzing the position of the analysis point: if the analysis point is positioned in the early warning curve, judging that the corresponding time period is a normal time period; if the analysis point is located between the early warning curve and the shutdown curve, judging that the corresponding time period is an abnormal time period and the abnormal grade is a second grade, sending a state early warning signal to the processor by the state analysis module, sending the state early warning signal to a mobile phone terminal of a manager after the processor receives the state early warning signal, and simultaneously generating a second-grade life analysis signal by the processor and sending the second-grade life analysis signal to the life early warning module; if the analysis point is located outside the shutdown curve, judging that the corresponding time period is an abnormal time period and the abnormal grade is a grade, sending a shutdown signal to a processor by a state analysis module, sending the shutdown signal to a controller and a storage module after the processor receives the shutdown signal, generating a primary life analysis signal by the processor and sending the primary life analysis signal to a life early warning module, cutting off a control circuit of the high-pressure water pump after the controller receives the shutdown signal, obtaining a new shutdown threshold TJnew by a formula TJnew=t2×TJmax after the storage module receives the shutdown signal, wherein t2 is a proportionality coefficient, and t2 is more than or equal to 0.85 and less than or equal to 0.95, performing emergency shutdown processing by a controller cut-off circuit under the condition that a manager ignores, and simultaneously performing equal proportionality down regulation on the shutdown threshold to provide operation protection for the high-pressure water pump; and replacing and storing the value of the new shutdown threshold TJnew to the value of the shutdown threshold TJmax.
After receiving the primary service life analysis signal, the service life early-warning module carries out primary early-warning analysis on the service life of the high-pressure water pump: the method comprises the steps of obtaining a shutdown threshold TJMax and an early warning threshold YJMax through a storage module, and comparing the values of the shutdown threshold TJMax and the early warning threshold YJMax: if the shutdown threshold Tjmax is smaller than or equal to the early warning threshold Yjmax, judging that the primary life early warning analysis result of the high-pressure water pump is unqualified, and sending a rejection signal to a processor by the life early warning module; if the shutdown threshold value YJMax is larger than the early warning threshold value YJMax, the primary service life early warning analysis result of the high-pressure water pump is judged to be qualified.
The service life early warning module receives the secondary service life analysis signal and then carries out secondary early warning analysis on the service life of the high-pressure water pump: obtaining a vibration coefficient ZX and a noise value ZS of an abnormal period, obtaining the time when a life early warning module receives a secondary life analysis signal last time and marking the time as analysis time, marking the difference value between the current system time and the analysis time as analysis time FS, obtaining a life coefficient SM of the high-pressure water pump through a formula SM= (gamma 1 x ZX+gamma 2 x ZS)/(gamma 3 x FS), wherein the life coefficient SM is a value for reflecting the residual life length of the high-pressure water pump, and the higher the value of the life coefficient SM is, the shorter the residual life of the high-pressure water pump is, wherein gamma 1, gamma 2 and gamma 3 are proportionality coefficients, and gamma 1 is larger than gamma 2 is larger than gamma 3; the service life threshold SMmax is obtained through the storage module, and the service life coefficient SM of the high-pressure water pump is compared with the service life threshold SMmax: if the life coefficient SM is smaller than or equal to the life threshold SMmax, judging that the secondary life early-warning analysis result of the high-pressure water pump is qualified; if the life coefficient SM is larger than the life threshold SMmax, judging that the secondary life early-warning analysis result of the high-pressure water pump is unqualified, and sending a rejection signal to the processor by the life early-warning module.
The life early warning module monitors and early warns the residual life of the high-pressure water pump by adopting different analysis modes when receiving the primary life analysis signal and the secondary life analysis signal, monitors the life of the high-pressure water pump by combining early warning frequency analysis and shutdown frequency analysis, and timely early warns when the life of the high-pressure water pump is abnormal.
And after receiving the scrapping signal, the processor sends the scrapping signal to a mobile phone terminal of the manager.
Example III
As shown in fig. 3, a working method of the axial plunger type high-pressure water pump comprises the following steps:
step one: flushing the high-pressure water pump before the high-pressure water pump works, removing impurities in a pipeline through flushing water flow, unscrewing an exhaust plug after the cleaning is finished, screwing the exhaust plug after water is discharged, and finally starting the high-pressure water pump to work after the rotation direction of the pump is ensured to be correct;
step two: in the working process of the high-pressure water pump, detecting and analyzing the state of the high-pressure water pump during operation through an operation analysis module, establishing a rectangular coordinate system through a vibration coefficient and a noise value by a state analysis model, drawing an early warning curve and a shutdown curve, marking points in the rectangular coordinate system according to the vibration coefficient and the noise value of a time period, and judging whether the time period is abnormal or not through the position relation between the marking points and the early warning curve and the shutdown curve;
step three: when the abnormal level of the time period is a second level, the processor generates a second-level life analysis signal and sends the second-level life analysis signal to the life early-warning module, and the life early-warning module carries out second-level early-warning analysis on the service life of the high-pressure water pump after receiving the second-level life analysis signal;
step four: when the abnormal grade of the time period is one grade, the processor generates a primary life analysis signal and sends the primary life analysis signal to the life early-warning module, and the life early-warning module carries out primary early-warning analysis on the service life of the high-pressure water pump after receiving the primary life analysis signal;
step five: when the primary life early-warning analysis result or the secondary life early-warning analysis result of the high-pressure water pump is unqualified, the life early-warning module sends a rejection signal to the processor, and the processor sends the rejection signal to a mobile phone terminal of a manager after receiving the rejection signal.
During operation of the axial plunger type high-pressure water pump, the state of the high-pressure water pump during operation is detected and analyzed through an operation analysis module, a rectangular coordinate system is established through a vibration coefficient and a noise value by a state analysis model, an early warning curve and a shutdown curve are drawn, punctuation is carried out in the rectangular coordinate system according to the vibration coefficient and the noise value of a time period, whether the time period is abnormal or not is judged through the position relation between the punctuation and the early warning curve and the shutdown curve, and when a primary life analysis signal and a secondary life analysis signal are received by a life early warning module, the residual life of the high-pressure water pump is monitored and early warned through different analysis modes, and the life of the high-pressure water pump is monitored through a mode combining early warning frequency analysis and shutdown frequency analysis.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
The formulas are all formulas obtained by collecting a large amount of data for software simulation and selecting a formula close to a true value, and coefficients in the formulas are set by a person skilled in the art according to actual conditions; such as: formula sm= (γ1×zx+γ2×zs)/(γ3×fs); collecting a plurality of groups of sample data by a person skilled in the art and setting a corresponding life coefficient for each group of sample data; substituting the set life coefficient and the acquired sample data into a formula, forming a ternary one-time equation set by any three formulas, screening the calculated coefficient, and taking an average value to obtain values of gamma 1, gamma 2 and gamma 3 of 3.58, 2.84 and 2.32 respectively;
the size of the coefficient is a specific numerical value obtained by quantizing each parameter, so that the subsequent comparison is convenient, and the size of the coefficient depends on the number of sample data and the corresponding life coefficient is preliminarily set for each group of sample data by a person skilled in the art; as long as the proportional relation between the parameter and the quantized value is not affected, for example, the life coefficient is proportional to the value of the vibration frequency.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (2)
1. The utility model provides an axial plunger type high-pressure water pump, includes front end housing (1) and rear end housing (2), its characterized in that, fixedly installed casing (3) between the side that front end housing (1) and rear end housing (2) are close to, be provided with cylinder body (4) between casing (3) inner wall, be provided with floating disc (5) and valve plate (6) between the side that cylinder body (4) and rear end housing (2) are close to, the side that floating disc (5) are close to valve plate (6) is fixedly installed and is had round pin axle (7), cylinder body (4) inside is provided with spring holder (8) and center spring (9), be provided with the circlip between one side that spring holder (8) kept away from center spring (9) and floating disc (5), be provided with plunger shoe (10) in cylinder body (4);
the outer surface of the shell (3) is provided with a processor, and the processor is in communication connection with an operation analysis module, a life early warning module, a storage module and a controller;
the operation analysis module is used for detecting and analyzing the state of the high-pressure water pump during operation: dividing the running time of the high-pressure water pump into a period i, i=1, 2, …, n and n are positive integers, and when the high-pressure water pump runs, acquiring the vibration amplitude and the vibration frequency of the high-pressure water pump in the period i and marking the vibration amplitude and the vibration frequency as ZFi and ZPi respectively, and obtaining the vibration coefficient ZXi of the high-pressure water pump through a formula ZXi =α1× ZFi +α2× ZPi; acquiring a noise value generated by a high-pressure water pump in a period i and marking the noise value as a noise value ZSI, wherein alpha 1 and alpha 2 are proportionality coefficients, and alpha 1 is more than alpha 2 is more than 0;
analyzing and judging whether the running state of the high-pressure water pump in the period i meets the requirement or not through a state analysis model;
the service life early warning module is used for carrying out early warning analysis on the service life of the high-pressure water pump;
the floating disc (5) is arranged on one side close to the cylinder body (4), the valve plate (6) is arranged on one side close to the rear end cover (2), and o-rings are arranged at the joints of the shell (3) and the front end cover (1) and the rear end cover (2); the center spring (9) is sleeved on the outer surface of the spring seat (8);
the establishment process of the state analysis model comprises the following steps: through the storage module early warning threshold value YJMax and the shutdown threshold value TJMax, the numerical calculation process of the early warning threshold value YJMax comprises the following steps: obtaining a vibration threshold ZXmax and a noise threshold ZSmax, and obtaining an early warning threshold YJmax through a formula YJmax=β1×ZXmax+β2×ZSmax; wherein, beta 1 and beta 2 are both proportional coefficients, and beta 1 is more than beta 2 is more than 1; the initial numerical calculation process of the shutdown threshold TJmax includes: obtaining a shutdown threshold TJMax through a formula TJMax=t1×YJMax, wherein t1 is a proportionality coefficient, and t1 is more than or equal to 1.25 and less than or equal to 1.35; establishing a rectangular coordinate system by taking a vibration coefficient as an X axis and a noise value as a Y axis, drawing a circle by taking an origin of the rectangular coordinate system as a circle center and an early warning threshold YJMax as a radius, and marking a quarter of circular arc in a first quadrant of the rectangular coordinate system as an early warning curve; drawing a circle by taking the origin of the rectangular coordinate system as the circle center and taking the shutdown threshold TJmax as the radius, and marking a quarter of circular arc in the first quadrant of the rectangular coordinate system as a shutdown curve;
the process for judging whether the running state of the high-pressure water pump in the period i meets the requirement by the state analysis model comprises the following steps: marking the time interval i in a rectangular coordinate system according to the values of the vibration coefficient ZXi and the noise value ZSi and marking the marked point as an analysis point;
analyzing the position of the analysis point:
if the analysis point is positioned in the early warning curve, judging that the corresponding time period is a normal time period;
if the analysis point is located between the early warning curve and the shutdown curve, judging that the corresponding time period is an abnormal time period and the abnormal grade is a second grade, sending a state early warning signal to the processor by the state analysis model, sending the state early warning signal to a mobile phone terminal of a manager after the processor receives the state early warning signal, and simultaneously generating a second-grade life analysis signal by the processor and sending the second-grade life analysis signal to the life early warning module;
if the analysis point is located outside the shutdown curve, judging that the corresponding time period is an abnormal time period and the abnormal grade is a grade, sending a shutdown signal to a processor by a state analysis model, sending the shutdown signal to a controller and a storage module after the processor receives the shutdown signal, generating a primary life analysis signal by the processor and sending the primary life analysis signal to a life early warning module, cutting off a control circuit of the high-pressure water pump after the controller receives the shutdown signal, and obtaining a new shutdown threshold TJnew by a formula TJnew=t2×TJmax after the storage module receives the shutdown signal, wherein t2 is a proportionality coefficient, and t2 is more than or equal to 0.85 and less than or equal to 0.95; replacing and storing the value of the new shutdown threshold TJnew to the value of the shutdown threshold TJmax;
after receiving the primary service life analysis signal, the service life early-warning module carries out primary early-warning analysis on the service life of the high-pressure water pump: the method comprises the steps of obtaining a shutdown threshold TJMax and an early warning threshold YJMax through a storage module, and comparing the values of the shutdown threshold TJMax and the early warning threshold YJMax:
if the shutdown threshold TJMax is smaller than or equal to the early warning threshold YJMax, judging that the primary life early warning analysis result of the high-pressure water pump is unqualified, and sending a rejection signal to a processor by a life early warning module;
if the shutdown threshold T JMax is larger than the early warning threshold YJMax, judging that the primary service life early warning analysis result of the high-pressure water pump is qualified;
the service life early warning module receives the secondary service life analysis signal and then carries out secondary early warning analysis on the service life of the high-pressure water pump: obtaining a vibration coefficient ZX and a noise value ZS of an abnormal period, obtaining the time when a service life early warning module receives a secondary service life analysis signal last time, marking the time as analysis time, and marking the difference value between the current system time and the analysis time as analysis time length FS;
obtaining a life coefficient SM of the high-pressure water pump through a formula SM= (gamma 1 x ZX+gamma 2 x ZS)/(gamma 3 x FS), obtaining a life threshold SMmax through a storage module, and comparing the life coefficient SM of the high-pressure water pump with the life threshold SMmax; wherein, gamma 1, gamma 2 and gamma 3 are all proportional coefficients, and gamma 1 > gamma 2 > gamma 3 > 1;
if the life coefficient SM is smaller than or equal to the life threshold SMmax, judging that the secondary life early-warning analysis result of the high-pressure water pump is qualified;
if the life coefficient SM is larger than the life threshold SMmax, judging that the secondary life early-warning analysis result of the high-pressure water pump is unqualified, and sending a rejection signal to the processor by the life early-warning module.
2. The axial plunger type high-pressure water pump according to claim 1, wherein the working method of the axial plunger type high-pressure water pump comprises the following steps:
step one: flushing the high-pressure water pump before the high-pressure water pump works, removing impurities in a pipeline through flushing water flow, unscrewing an exhaust plug after the cleaning is finished, screwing the exhaust plug after water is discharged, and starting the high-pressure water pump to work;
step two: in the working process of the high-pressure water pump, detecting and analyzing the state of the high-pressure water pump during operation through an operation analysis module, establishing a rectangular coordinate system through a vibration coefficient and a noise value by a state analysis model, drawing an early warning curve and a shutdown curve, marking points in the rectangular coordinate system according to the vibration coefficient and the noise value of a time period, and judging whether the time period is abnormal or not through the position relation between the marking points and the early warning curve and the shutdown curve;
step three: when the abnormal level of the time period is a second level, the processor generates a second-level life analysis signal and sends the second-level life analysis signal to the life early-warning module, and the life early-warning module carries out second-level early-warning analysis on the service life of the high-pressure water pump after receiving the second-level life analysis signal;
step four: when the abnormal grade of the time period is one grade, the processor generates a primary life analysis signal and sends the primary life analysis signal to the life early-warning module, and the life early-warning module carries out primary early-warning analysis on the service life of the high-pressure water pump after receiving the primary life analysis signal;
step five: when the primary life early-warning analysis result or the secondary life early-warning analysis result of the high-pressure water pump is unqualified, the life early-warning module sends a rejection signal to the processor, and the processor sends the rejection signal to a mobile phone terminal of a manager after receiving the rejection signal.
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| US6882960B2 (en) * | 2003-02-21 | 2005-04-19 | J. Davis Miller | System and method for power pump performance monitoring and analysis |
| CN203098171U (en) * | 2012-12-07 | 2013-07-31 | 北京工业大学 | Tilted-disc-type disc-flow-distribution seawater plunger pump with embedded sliding bearing |
| CN208416985U (en) * | 2018-06-29 | 2019-01-22 | 宁波巨神制泵实业有限公司 | A kind of water pump on-line detecting system |
| CN112330152A (en) * | 2020-11-05 | 2021-02-05 | 华润电力技术研究院有限公司 | Water supply pump state evaluation and operation and maintenance method and system based on data fusion |
| CN113107831B (en) * | 2021-03-01 | 2023-02-28 | 中国神华能源股份有限公司国华电力分公司 | Method, device and equipment for monitoring state and service life of water feed pump and storage medium |
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