CN114294194A - 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 conventional high-pressure water pump cannot perform service life early warning analysis when the working state is abnormal, in particular 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, close to the front end cover and the rear end cover, of a cylinder body, a floating disc and a flow distribution disc are arranged between the side surfaces, close to the rear end cover, of the cylinder body, a pin shaft is fixedly arranged on the side surface, close to the flow distribution disc, of the floating disc, a spring seat and a central spring are arranged in the cylinder body, an elastic check ring is arranged between the side, 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 invention monitors the running state of the high-pressure water pump in real time through the running analysis module, and cuts off the circuit through the controller to carry out emergency shutdown processing under the condition that managers ignore the running state, thereby providing 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 pumps are various in types, and the micro high-pressure water pump which is most widely applied is commonly used in the aspects of cleaning, spraying, pressurizing, pumping and the like due to the advantages of high pressure, small volume, convenience in carrying and the like;
the invention patent with publication number CN102536774B discloses an operation characteristic and operation energy efficiency analysis device of an industrial circulating water pump set, wherein the operation energy efficiency analysis device can visually, visually and real-timely give operation characteristics and operation energy efficiency parameters of the water pump and the pump set through a control system interface in a chart form under the conditions of variable working conditions and operation modes, and carry out continuity analysis;
however, the water pump operation energy efficiency analysis device cannot analyze the working state of the water pump in combination with parameters of the water pump during working, 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 perform early warning in time when the water pump is scrapped, and has certain potential safety hazard when the normal working of a pump set is influenced;
a solution is now proposed to address the technical drawback in this respect.
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 conventional 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 which can carry out state detection and service life early warning in real time.
The purpose of the invention can be realized by the following technical scheme:
an axial plunger type high-pressure water pump comprises a front end cover and a rear end cover, wherein a shell is fixedly installed between the side faces, close to the front end cover and the rear end cover, of the front end cover, a cylinder body is arranged between the inner walls of the shells, a floating disc and a flow distribution disc are arranged between the side faces, close to the rear end cover, of the cylinder body, a pin shaft is fixedly installed on the side face, close to the flow distribution disc, of the floating disc, a spring seat and a central spring are arranged inside the cylinder body, an elastic retainer ring is arranged between one side, 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 service 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 operation time of the high-pressure water pump into time periods i, wherein i is 1, 2, …, n is a positive integer, acquiring the vibration amplitude and the vibration frequency of the high-pressure water pump in the time period i when the high-pressure water pump operates, respectively marking the vibration amplitude and the vibration frequency as ZFi and ZPi, and calculating the vibration amplitude ZFi and the vibration frequency ZPi to obtain a vibration coefficient ZXi; acquiring a noise volume value generated by the high-pressure water pump in a time interval i and marking the noise volume value as a noise value ZSi;
analyzing and judging whether the running state of the high-pressure water pump in the time period i meets the requirement or not through a state analysis model;
and the service life early warning module is used for carrying out early warning analysis on the service life of the high-pressure water pump.
Furthermore, the floating disc is arranged on one side close to the cylinder body, the flow distribution disc is arranged on one side close to the rear end cover, and o-shaped rings are arranged at the joints of the shell and the front end cover and the rear end cover; the central spring is sleeved on the outer surface of the spring seat.
Further, the establishment process of the state analysis model comprises the following steps: through the early warning threshold YJmax and the shutdown threshold TJmax of the storage module, the numerical calculation process of the early warning threshold YJmax comprises the following steps: obtaining a vibration threshold value ZXmax and a noise threshold value ZSmax, and obtaining an early warning threshold value YJmax through a formula YJmax which is beta 1 multiplied by ZXmax + beta 2 multiplied by ZSmax; the initial numerical calculation of the shutdown threshold TJmax includes: obtaining a shutdown threshold TJmax through a formula TJmax which is t1 XYJmax, 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 the vibration coefficient as an X axis and the noise value as a Y axis, drawing a circle by taking the origin of the rectangular coordinate system as the center of the circle and the early warning threshold YJmax as the radius, and marking a quarter of a 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 center of the circle and the stop threshold TJmax as the radius, and marking a quarter of a circular arc in the first quadrant of the rectangular coordinate system as a stop curve.
Further, the process of judging whether the running state of the high-pressure water pump in the time 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 points as analysis points;
the position of the analysis point is analyzed:
if the analysis point is located 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 interval is an abnormal time interval and the abnormal grade is a second grade, sending a state early warning signal to a processor by a 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 service life analysis signal by the processor and sending the second-grade service life analysis signal to a service life early warning module;
if the analysis point is located outside the shutdown curve, the corresponding time interval is judged to be an abnormal time interval and the abnormal grade is judged to be a grade, the state analysis module sends a shutdown signal to the processor, the processor receives the shutdown signal and then sends the shutdown signal to the controller and the storage module, meanwhile, the processor also generates a first-grade life analysis signal and sends the first-grade life analysis signal to the life early warning module, the controller cuts off a control circuit of the high-pressure water pump after receiving the shutdown signal, and after the storage module receives the shutdown signal, a new shutdown threshold value TJnew is obtained through a formula TJnew which is t2 multiplied by TJmax, 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 shutdown threshold TJmax by the value of the new shutdown threshold TJnew.
Further, the service 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: obtaining a shutdown threshold TJmax and an early warning threshold YJmax through a storage module, and comparing the shutdown threshold TJmax with 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 service life early warning analysis result of the high-pressure water pump is unqualified, and sending a scrapping signal to a processor by a service life early warning module;
and if the shutdown threshold YJmax is larger than the early warning threshold YJmax, judging that the first-stage service life early warning analysis result of the high-pressure water pump is qualified.
Further, the service life early warning module carries out second-stage early warning analysis on the service life of the high-pressure water pump after receiving the second-stage service life analysis signal: obtaining a vibration coefficient ZX and a noise value ZS of an abnormal time period, obtaining the time of the last receiving of a secondary life analysis signal by the life early warning module and marking the time as analysis time, and marking the difference value of the current system time and the analysis time as analysis time FS;
obtaining a life coefficient SM of the high-pressure water pump by a formula SM ═ gamma 1 xZX + gamma 2 xZS)/(gamma 3 xFS), 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:
if the service life coefficient SM is less than or equal to the service life threshold SMmax, judging that the secondary service life early warning analysis result of the high-pressure water pump is qualified;
and if the service life coefficient SM is greater than the service life threshold SMmax, judging that the secondary service life early warning analysis result of the high-pressure water pump is unqualified, and sending a scrapping signal to the processor by the service life early warning module.
Further, the working method of the axial plunger type high-pressure water pump comprises the following steps:
the method comprises the following steps: washing the high-pressure water pump before the high-pressure water pump works, removing impurities in a pipeline through washed water flow, unscrewing an exhaust plug after washing is finished, screwing the exhaust plug after water overflows, and starting the high-pressure water pump to work;
step two: in the working process of the high-pressure water pump, the running state of the high-pressure water pump is detected and analyzed through a running analysis module, a rectangular coordinate system is established by a state analysis model through a vibration coefficient and a noise value, an early warning curve and a stopping curve are drawn, a punctuation is carried out in the rectangular coordinate system according to the vibration coefficient and the noise value of a time period, and whether the time period is abnormal or not is judged through the position relation of the punctuation, the early warning curve and the stopping curve;
step three: when the abnormal grade of the time interval is a second grade, the processor generates a second-grade service life analysis signal and sends the second-grade service life analysis signal to the service life early warning module, and the service life early warning module performs second-grade early warning analysis on the service life of the high-pressure water pump after receiving the second-grade service life analysis signal;
step four: when the abnormal grade of the time interval is one grade, the processor generates a first-grade service life analysis signal and sends the first-grade service life analysis signal to the service life early warning module, and the service life early warning module performs first-grade early warning analysis on the service life of the high-pressure water pump after receiving the first-grade service life analysis signal;
step five: and when the primary service life early warning analysis result or the secondary service life early warning analysis result of the high-pressure water pump is unqualified, the service life early warning module sends a scrapped signal to the processor, and the processor receives the scrapped signal and then sends the scrapped signal to a mobile phone terminal of a manager.
The invention has the following beneficial effects:
1. the running state of the high-pressure water pump is monitored in real time through the running analysis module, the running time of the high-pressure water pump is analyzed in time intervals, the timeliness of the detection result of the running 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 module, state analysis is conducted in a punctuation mode, the intuition and the objectivity of the detection result are improved, different signals are generated by punctuation points at different positions, when managers receive the early warning signal and do not process the early warning signal in time, the water pump runs continuously in the abnormal state to accelerate the aging of equipment, therefore, the controller is used for cutting off a circuit to conduct emergency shutdown processing under the condition that the managers ignore, meanwhile, the shutdown threshold value is adjusted in equal proportion, and running protection is provided for the high-pressure water pump;
2. the service life of the high-pressure water pump is subjected to early warning analysis through the service life early warning module, the residual service life of the high-pressure water pump is monitored and early warned in different analysis modes when a primary service life analysis signal and a secondary service life analysis signal are received, the service life of the high-pressure water pump is monitored in a mode of combining early warning frequency analysis and shutdown frequency analysis, early warning is timely performed when the service life of the high-pressure water pump is abnormal, and the problem that the pump set 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 present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front sectional view of a first embodiment of the present invention;
FIG. 2 is a block diagram of a system according to 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 cap; 3. a housing; 4. a cylinder body; 5. a floating disk; 6. a valve plate; 7. a pin shaft; 8. a spring seat; 9. a center spring; 10. a plunger shoe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in figure 1, an axial plunger type high-pressure water pump comprises a front end cover 1 and a rear end cover 2, a shell 3 is fixedly installed between the side surfaces of the front end cover 1 close to the rear end cover 2, two symmetrical exhaust plugs are arranged outside the shell 3, the high-pressure water pump is washed before working, impurities in a pipeline are removed through washed water flow, the exhaust plugs are unscrewed after washing is completed, when water is emitted, the water pump is filled with water, the exhaust plugs are screwed tightly at the time, a cylinder body 4 is arranged between the inner wall of the shell 3, a floating disc 5 and a flow distribution disc 6 are arranged between the side surfaces of the cylinder body 4 close to the rear end cover 2, the floating disc 5 is arranged at one side close to the cylinder body 4, the flow distribution disc 6 is arranged at one side close to the rear end cover 2, a pin shaft 7 is fixedly installed at the side surface of the floating disc 5 close to the flow distribution disc 6, a spring seat 8 and a central spring 9 are arranged inside the cylinder body 4, the central spring 9 is sleeved on the outer surface of the spring seat 8, an elastic check ring is arranged between one side, far away from the central spring 9, of the spring seat 8 and the floating disc 5, a plunger piston shoe 10 is arranged in the cylinder body 4, and o-shaped rings are arranged at the connecting parts of the shell 3, the front end cover 1 and the rear end cover 2.
Example two
As shown in fig. 2, the outer surface of the housing 3 is further provided with a processor, and the processor is in communication connection with an operation analysis module, a life 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 operation time of the high-pressure water pump into time periods i, wherein i is 1, 2, …, n and n are positive integers, acquiring the vibration amplitude and the vibration frequency of the high-pressure water pump in the time period i when the high-pressure water pump operates, respectively marking the vibration amplitude and the vibration frequency as ZFi and ZPi, obtaining the vibration coefficient ZXi of the high-pressure water pump through a formula ZXi which is alpha 1 × ZFi + alpha 2 × ZPi, wherein the vibration coefficient ZXi is a numerical value representing the obvious degree of vibration of the high-pressure water pump during operation, the higher the numerical value of the vibration coefficient ZXi is, the more obvious the vibration generated when the high-pressure water pump operates in the time period i is represented, the worse the working state of the high-pressure water pump is, wherein alpha 1 and alpha 2 are proportional coefficients, and alpha 1 is more than alpha 2 and more than 0; acquiring a noise volume value generated by the high-pressure water pump in a time interval i and marking the noise volume 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 utilizes the Coriolis effect generated when the high-frequency vibration mass is driven by the base to rotate to sense angular motion, the main body of the vibration gyroscope is a component which does high-frequency vibration, and the vibration gyroscope has the advantages of stable performance, simple structure, high reliability, large bearing capacity and the like; the noise value is directly acquired by a noise tester, the noise tester is used for detecting and testing noise in public places such as a working site and a square, noise pollution is one of environment pollution with large influence, noise with high decibel can even cause serious damage to eardrums of people to cause deafness and the like, and the noise tester can provide the decibel reached by the noise so as to take relevant measures to control and reduce the noise.
And judging whether the running state of the high-pressure water pump in the time period i meets the requirement or not through a state analysis model: through memory module early warning threshold YJmax and shut down threshold TJmax, the early warning threshold is obtained through calculation by vibration threshold and noise threshold, and vibration threshold and noise threshold are the maximum value of vibration frequency and noise when high pressure water pump normally works, and the numerical calculation process of early warning threshold YJmax includes: obtaining a vibration threshold value ZXmax and a noise threshold value ZSmax, and obtaining an early warning threshold value YJmax through a formula YJmax which is beta 1 xZXmax + beta 2 xZSmax, wherein beta 1 and beta 2 are proportionality coefficients, and beta 1 is larger than beta 2 and larger than 1; the initial numerical calculation of the shutdown threshold TJmax includes: obtaining a shutdown threshold TJmax through a formula TJmax which is t1 multiplied by 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 for numerical value 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 the vibration coefficient as an X axis and the noise value as a Y axis, drawing a circle by taking the origin of the rectangular coordinate system as the center of the circle and the early warning threshold YJmax as the radius, and marking a quarter of a circular arc in a first quadrant of the rectangular coordinate system as an early warning curve; the method comprises the following steps of drawing a circle by taking the origin of a rectangular coordinate system as the circle center and taking a shutdown threshold TJmax as the radius, marking a quarter circular arc in a first quadrant of the rectangular coordinate system as a shutdown curve, marking a time interval i in the rectangular coordinate system according to the values of the vibration coefficient ZXi and the noise value ZSi, marking the marked point as an analysis point, and analyzing the position of the analysis point: if the analysis point is located 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 interval is an abnormal time interval and the abnormal grade is a second grade, sending a state early warning signal to a processor by a 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 service life analysis signal by the processor and sending the second-grade service life analysis signal to a service life early warning module; if the analysis point is located outside the shutdown curve, the corresponding time interval is judged to be an abnormal time interval, the abnormal grade is judged to be a grade, the state analysis module sends a shutdown signal to the processor, the processor receives the shutdown signal and then sends the shutdown signal to the controller and the storage module, meanwhile, the processor also generates a first-grade life analysis signal and sends the first-grade life analysis signal to the life early warning module, the controller receives the shutdown signal and then cuts off a control circuit of the high-pressure water pump, the storage module receives the shutdown signal and then obtains a new shutdown threshold TJnew through a formula TJnew which is t2 multiplied by TJmax, wherein t2 is a proportionality coefficient, t2 is not more than 0.85 and not more than 0.95, under the condition that a manager ignores, the controller cuts off the circuit to perform emergency shutdown processing, and meanwhile, the shutdown threshold is adjusted in equal proportion, so that operation protection is provided for the high-pressure water pump; and replacing and storing the value of the shutdown threshold TJmax by the value of the new shutdown threshold TJnew.
The service life early warning module carries out primary early warning analysis on the service life of the high-pressure water pump after receiving the primary service life analysis signal: obtaining a shutdown threshold TJmax and an early warning threshold YJmax through a storage module, and comparing the shutdown threshold TJmax with 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 service life early warning analysis result of the high-pressure water pump is unqualified, and sending a scrapping signal to a processor by a service life early warning module; and if the shutdown threshold YJmax is larger than the early warning threshold YJmax, judging that the first-stage service life early warning analysis result of the high-pressure water pump is qualified.
The service life early warning module carries out second-stage early warning analysis on the service life of the high-pressure water pump after receiving the second-stage service life analysis signal: obtaining a vibration coefficient ZX and a noise value ZS of an abnormal time period, obtaining the time of a service life early warning module for receiving a secondary service life analysis signal last time and marking the time as analysis time, marking the difference value of the current system time and the analysis time as analysis time FS, wherein the unit is day, obtaining a service life coefficient SM of the high-pressure water pump by a formula SM ═ gamma 1 xZX + gamma 2 xZS)/(gamma 3 xFS, wherein the service life coefficient SM is a numerical value for reflecting the residual service life of the high-pressure water pump, the higher the numerical value of the service life coefficient SM is, the shorter the residual service life of the high-pressure water pump is, gamma 1, gamma 2 and gamma 3 are proportional coefficients, and gamma 1 is more than gamma 2 and more than gamma 3 is more than 1; obtaining a service life threshold SMmax through a storage module, and comparing a service life coefficient SM of the high-pressure water pump with the service life threshold SMmax: if the service life coefficient SM is less than or equal to the service life threshold SMmax, judging that the secondary service life early warning analysis result of the high-pressure water pump is qualified; and if the service life coefficient SM is greater than the service life threshold SMmax, judging that the secondary service life early warning analysis result of the high-pressure water pump is unqualified, and sending a scrapping signal to the processor by the service life early warning module.
The service life early warning module monitors and early warns the residual service life of the high-pressure water pump in different analysis modes when receiving the first-stage service life analysis signal and the second-stage service life analysis signal, monitors the service life of the high-pressure water pump in a mode of combining early warning frequency analysis and shutdown frequency analysis, and timely warns when the service life of the high-pressure water pump is abnormal.
And the processor receives the scrapping signal and then sends the scrapping signal to the mobile phone terminal of the manager.
EXAMPLE III
As shown in fig. 3, an operation method of an axial plunger type high pressure water pump includes the following steps:
the method comprises the following steps: washing the high-pressure water pump before the high-pressure water pump works, removing impurities in a pipeline through washed water flow, unscrewing an exhaust plug after washing is finished, screwing the exhaust plug after water overflows, 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, the running state of the high-pressure water pump is detected and analyzed through a running analysis module, a rectangular coordinate system is established by a state analysis model through a vibration coefficient and a noise value, an early warning curve and a stopping curve are drawn, a punctuation is carried out in the rectangular coordinate system according to the vibration coefficient and the noise value of a time period, and whether the time period is abnormal or not is judged through the position relation of the punctuation, the early warning curve and the stopping curve;
step three: when the abnormal grade of the time interval is a second grade, the processor generates a second-grade service life analysis signal and sends the second-grade service life analysis signal to the service life early warning module, and the service life early warning module performs second-grade early warning analysis on the service life of the high-pressure water pump after receiving the second-grade service life analysis signal;
step four: when the abnormal grade of the time interval is one grade, the processor generates a first-grade service life analysis signal and sends the first-grade service life analysis signal to the service life early warning module, and the service life early warning module performs first-grade early warning analysis on the service life of the high-pressure water pump after receiving the first-grade service life analysis signal;
step five: and when the primary service life early warning analysis result or the secondary service life early warning analysis result of the high-pressure water pump is unqualified, the service life early warning module sends a scrapped signal to the processor, and the processor receives the scrapped signal and then sends the scrapped signal to a mobile phone terminal of a manager.
An axial plunger type high-pressure water pump comprises a running analysis module, a state judgment module, a service life early warning module and a service life monitoring module, wherein the running analysis module is used for detecting and analyzing the running state of the high-pressure water pump in the working process of the high-pressure water pump, the state analysis module establishes a rectangular coordinate system through a vibration coefficient and a noise value and draws an early warning curve and a shutdown curve, punctuation is carried out according to the vibration coefficient and the noise value of a time interval in the rectangular coordinate system, whether the time interval is abnormal or not is judged through the position relation of the punctuation, the early warning curve and the shutdown curve, the service life early warning module monitors and warns the residual service life of the high-pressure water pump in different analysis modes when receiving a primary service life analysis signal and a secondary service life analysis signal, and the service life of the high-pressure water pump is monitored in a mode of combining early warning frequency analysis and shutdown frequency analysis.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
The formulas are obtained by acquiring a large amount of data and performing software simulation, and the coefficients in the formulas are set by the technicians in the field according to actual conditions; such as: formula SM ═ γ 1 × ZX + γ 2 × ZS)/(γ 3 × FS); collecting multiple groups of sample data and setting a corresponding life coefficient for each group of sample data by a person skilled in the art; substituting the set life coefficient and the acquired sample data into a formula, forming a ternary linear equation set by any three formulas, screening the calculated coefficients and taking the mean value to obtain values of gamma 1, gamma 2 and gamma 3 which are respectively 3.58, 2.84 and 2.32;
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 service life coefficient preliminarily set by a person skilled in the art for each group of sample data; it is sufficient if the proportional relationship between the parameters and the quantized values is not affected, for example, the life factor is proportional to the value of the vibration frequency.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms 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 utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. An axial plunger type high-pressure water pump comprises a front end cover (1) and a rear end cover (2), and is characterized in that a shell (3) is fixedly installed between the side faces, close to the front end cover (1) and the rear end cover (2), of the front end cover, a cylinder body (4) is arranged between the inner walls of the shell (3), a floating disc (5) and a flow distribution disc (6) are arranged between the side faces, close to the rear end cover (2), of the cylinder body (4), a pin shaft (7) is fixedly installed on the side face, close to the flow distribution disc (6), of the floating disc (5), a spring seat (8) and a central spring (9) are arranged inside the cylinder body (4), an elastic retainer ring is arranged between one side, far away from the central spring (9), of the spring seat (8) and the floating disc (5), and a plunger sliding shoe (10) is arranged inside the 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 service 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 operation time of the high-pressure water pump into time periods i, wherein i is 1, 2, …, n is a positive integer, acquiring the vibration amplitude and the vibration frequency of the high-pressure water pump in the time period i when the high-pressure water pump operates, respectively marking the vibration amplitude and the vibration frequency as ZFi and ZPi, and calculating the vibration amplitude ZFi and the vibration frequency ZPi to obtain a vibration coefficient ZXi; acquiring a noise volume value generated by the high-pressure water pump in a time interval i and marking the noise volume value as a noise value ZSi;
analyzing and judging whether the running state of the high-pressure water pump in the time period i meets the requirement or not through a state analysis model;
and the service life early warning module is used for carrying out early warning analysis on the service life of the high-pressure water pump.
2. The axial plunger type high-pressure water pump as claimed in claim 1, characterized in that the floating disc (5) is arranged at one side close to the cylinder body (4), the port plate (6) is arranged at one side close to the rear end cover (2), and the joints of the shell (3) and the front end cover (1) and the rear end cover (2) are provided with o-rings; the central spring (9) is sleeved on the outer surface of the spring seat (8).
3. The axial plunger type high pressure water pump as set forth in claim 1, wherein the process of establishing the state analysis model includes: through the early warning threshold YJmax and the shutdown threshold TJmax of the storage module, the numerical calculation process of the early warning threshold YJmax comprises the following steps: obtaining a vibration threshold value ZXmax and a noise threshold value ZSmax, and obtaining an early warning threshold value YJmax through a formula YJmax which is beta 1 multiplied by ZXmax + beta 2 multiplied by ZSmax; the initial numerical calculation of the shutdown threshold TJmax includes: obtaining a shutdown threshold TJmax through a formula TJmax which is t1 XYJmax, 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 the vibration coefficient as an X axis and the noise value as a Y axis, drawing a circle by taking the origin of the rectangular coordinate system as the center of the circle and the early warning threshold YJmax as the radius, and marking a quarter of a 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 center of the circle and the stop threshold TJmax as the radius, and marking a quarter of a circular arc in the first quadrant of the rectangular coordinate system as a stop curve.
4. The axial plunger type high-pressure water pump according to claim 3, wherein the determination process of the state analysis model on whether the operation state of the high-pressure water pump in the time period i meets the requirement 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 points as analysis points;
the position of the analysis point is analyzed:
if the analysis point is located 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 interval is an abnormal time interval and the abnormal grade is a second grade, sending a state early warning signal to a processor by a 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 service life analysis signal by the processor and sending the second-grade service life analysis signal to a service life early warning module;
if the analysis point is located outside the shutdown curve, the corresponding time interval is judged to be an abnormal time interval and the abnormal grade is judged to be a grade, the state analysis module sends a shutdown signal to the processor, the processor receives the shutdown signal and then sends the shutdown signal to the controller and the storage module, meanwhile, the processor also generates a first-grade life analysis signal and sends the first-grade life analysis signal to the life early warning module, the controller cuts off a control circuit of the high-pressure water pump after receiving the shutdown signal, and after the storage module receives the shutdown signal, a new shutdown threshold value TJnew is obtained through a formula TJnew which is t2 multiplied by TJmax, 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 shutdown threshold TJmax by the value of the new shutdown threshold TJnew.
5. The axial plunger type high-pressure water pump according to claim 4, wherein the service life early warning module performs a primary early warning analysis on the service life of the high-pressure water pump after receiving the primary service life analysis signal: obtaining a shutdown threshold TJmax and an early warning threshold YJmax through a storage module, and comparing the shutdown threshold TJmax with 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 service life early warning analysis result of the high-pressure water pump is unqualified, and sending a scrapping signal to a processor by a service life early warning module;
and if the shutdown threshold YJmax is larger than the early warning threshold YJmax, judging that the first-stage service life early warning analysis result of the high-pressure water pump is qualified.
6. The axial plunger type high-pressure water pump according to claim 4, wherein the service life early warning module performs a secondary early warning analysis on the service life of the high-pressure water pump after receiving the secondary service life analysis signal: obtaining a vibration coefficient ZX and a noise value ZS of an abnormal time period, obtaining the time of the last receiving of a secondary life analysis signal by the life early warning module and marking the time as analysis time, and marking the difference value of the current system time and the analysis time as analysis time FS;
obtaining a life coefficient SM of the high-pressure water pump by a formula SM ═ gamma 1 xZX + gamma 2 xZS)/(gamma 3 xFS), 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:
if the service life coefficient SM is less than or equal to the service life threshold SMmax, judging that the secondary service life early warning analysis result of the high-pressure water pump is qualified;
and if the service life coefficient SM is greater than the service life threshold SMmax, judging that the secondary service life early warning analysis result of the high-pressure water pump is unqualified, and sending a scrapping signal to the processor by the service life early warning module.
7. An axial plunger type high pressure water pump according to any one of claims 1 to 6, characterized in that the working method of the axial plunger type high pressure water pump comprises the following steps:
the method comprises the following steps: washing the high-pressure water pump before the high-pressure water pump works, removing impurities in a pipeline through washed water flow, unscrewing an exhaust plug after washing is finished, screwing the exhaust plug after water overflows, and starting the high-pressure water pump to work;
step two: in the working process of the high-pressure water pump, the running state of the high-pressure water pump is detected and analyzed through a running analysis module, a rectangular coordinate system is established by a state analysis model through a vibration coefficient and a noise value, an early warning curve and a stopping curve are drawn, a punctuation is carried out in the rectangular coordinate system according to the vibration coefficient and the noise value of a time period, and whether the time period is abnormal or not is judged through the position relation of the punctuation, the early warning curve and the stopping curve;
step three: when the abnormal grade of the time interval is a second grade, the processor generates a second-grade service life analysis signal and sends the second-grade service life analysis signal to the service life early warning module, and the service life early warning module performs second-grade early warning analysis on the service life of the high-pressure water pump after receiving the second-grade service life analysis signal;
step four: when the abnormal grade of the time interval is one grade, the processor generates a first-grade service life analysis signal and sends the first-grade service life analysis signal to the service life early warning module, and the service life early warning module performs first-grade early warning analysis on the service life of the high-pressure water pump after receiving the first-grade service life analysis signal;
step five: and when the primary service life early warning analysis result or the secondary service life early warning analysis result of the high-pressure water pump is unqualified, the service life early warning module sends a scrapped signal to the processor, and the processor receives the scrapped signal and then sends the scrapped signal to a mobile phone terminal of a manager.
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| US20040167738A1 (en) * | 2003-02-21 | 2004-08-26 | Miller J. Davis | System and method for power pump performance monitoring and analysis |
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