Pump station monitoring symptom extraction system and method

Abstract

The invention discloses a pump station monitoring symptom extraction system and method, and relates to the field of pump station monitoring symptom extraction, the pump station monitoring symptom extraction system comprises a data acquisition module, an equipment module, an electrical module and a judgment and maintenance module, and is used for analyzing oil particles, oxidation products and acidic substances to obtain a lubricating oil stripping loss value, analyzing the axis displacement, symmetry and centering of a water pump, and obtaining a pump station monitoring symptom extraction result. The method comprises the following steps: obtaining a water pump axial position circle deviation value, analyzing a gate mode, a metallographic phase and a flow state to obtain a gate operation difference value, analyzing a lubricating oil stripping loss value and the water pump axial position circle deviation value to obtain a pump station equipment operation state difference value, and evaluating operation electrical parameters, operation warm and hot states, electrical insulation life and electrical control communication characteristics of electrical equipment. The monitoring state of the pump station is judged, corresponding maintenance signals are executed on the pump stations in different states, the running state of the pump station can be analyzed accurately in multiple directions, and the state of the pump station can be judged.

Description

Technical Field

[0001] The invention relates to the field of pump station monitoring sign extraction, and in particular to a pump station monitoring sign extraction system and method. Background Art

[0002] Pump stations play an important role in industrial production, agricultural irrigation, urban water supply and drainage, and once a pump station fails, it will lead to serious consequences such as water supply interruption, production stagnation, and rainwater overflow. At the same time, pump stations involve many water pumps, gates, motors and other equipment, and are also affected by water flow conditions, environmental factors and other factors. Therefore, traditional monitoring mainly relies on manual and basic instrument monitoring, which can no longer guarantee the normal operation of complex pump station systems.

[0003] When in operation, the traditional pump station monitoring sign extraction system is unable to accurately analyze the operating status of the pump station from all aspects, nor can it determine the status of the pump station and promptly report it to maintenance personnel, resulting in frequent pump station failures, affecting the lives of nearby residents and factory production. At the same time, untimely diagnosis and maintenance lead to increased costs for pump station maintenance.

[0004] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0005] In order to solve the technical problems raised by the above background technology, the present invention is proposed. The embodiment of the present invention provides a pump station monitoring symptom extraction system and method.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] In a first aspect, the present invention provides a pump station monitoring sign extraction system, including a data acquisition module, an equipment module, an electrical module, and a determination and maintenance module.

[0008] The data acquisition module is used to collect oil information, water pump information, gate information and electrical information, and send them to the equipment module and the electrical module;

[0009] The equipment module includes an oil analysis unit, a water pump analysis unit and a gate analysis unit;

[0010] The oil analysis unit is used to receive oil information, analyze oil particles, oxidation products, and acidic substances based on the information, and obtain the lubricating oil stripping value;

[0011] The water pump analysis unit is used to analyze the water pump shaft displacement, symmetry and centering, and obtain the water pump shaft circular deviation value;

[0012] The gate analysis unit analyzes the gate mode, metallographic structure and flow state to obtain the gate operation abnormal value, and analyzes it with the lubricating oil stripping value and the water pump shaft circle deviation value to obtain the pump station equipment operation abnormal value;

[0013] The electrical module is used to evaluate the operating electrical parameters, operating thermal state, electrical insulation life, and electrical control communication characteristics of the electrical equipment to obtain electrical barrier anomalies of the electrical equipment;

[0014] The determination maintenance module determines the monitoring status of the pump station by receiving abnormal values ​​of the pump station equipment operation status and abnormal values ​​of the electrical equipment electrical fault, and executes corresponding maintenance signals for pump stations in different states.

[0015] Furthermore, the steps of analyzing the abnormal values ​​of the pump station equipment operation status are as follows:

[0016] The gate modal value, gate material micro-strumentation value and gate hydraulic value are marked as Zm, Zc and Zs respectively, and normalized. According to the set formula model Yyz=k2×Zc / (k1×Zm+k3×Zs), the gate operation value Yyz is calculated, where k1, k2 and k3 are the set weight factor coefficients of the gate modal value, gate material micro-strumentation value and gate hydraulic value respectively;

[0017] The lubricating oil stripping value Bs, the water pump shaft circle deviation value and the gate operation abnormal value Yyz are normalized. The lubricating oil stripping value Bs is used as the bottom plate length of the trapezoid, the water pump shaft circle deviation value is used as the upper side length of the trapezoid, and the gate operation abnormal value Yyz is used as the height of the trapezoid. A trapezoid is constructed, and the circumference of the trapezoid is identified and marked as the pump station equipment operation abnormal value.

[0018] Furthermore, the analysis steps of the gate modal value, gate material micro-structural change value and gate hydraulic value are as follows:

[0019] Obtain the length, width, thickness of the pump station gate, the elastic modulus, Poisson's ratio, and density of the gate material, and obtain the gate's bending stiffness value Kg according to the formula. Obtain the gate's natural frequency Gp according to the formula, subtract the gate's natural frequency from the pump's operating frequency, take the absolute value, and obtain the gate's fixed positive frequency value. Obtain the gate's damping value, add it to the fixed positive frequency value, and obtain the gate's modal value; obtain the gate's surface roughness cc through a surface roughness meter, obtain the gate's velocity field and vortex field through particle image velocimetry technology, and then obtain The vorticity field is obtained by dividing the water flow section into several area units, calculating the vorticity and velocity vector of each unit. The vorticity is the curl of the velocity vector, and integrating the entire water flow section to obtain the vorticity flux wl. The water flow velocity sequence with time is measured at the gate position. The water flow velocity sequence is integrated over time and multiplied by the measurement time to obtain the average velocity. The average velocity is subtracted from the flow velocity sequence to obtain the flow velocity pulsation sequence. The root mean square velocity is obtained by integrating the square of the flow velocity pulsation sequence and multiplying it by the measurement time and then taking the square root. Pulsation value jm, water viscosity nd and density md, speed sv, according to the formula sx = md × sv / nd, get the water flow number sx, according to the formula lxz = (1-t1 × cc) × (1-t2 × wl) × (1-t3 × jm) × t4 × sx, calculate the flow correction coefficient lxz, t1, t2, t3 and t4 are the set influencing factor coefficients, get the gate water cross-sectional area dA, install liquid level sensors upstream and downstream of the gate to measure the water level, calculate the water level difference SC, ultrasonic The flow meter measures the gate flow value LQ. According to the formula lC=ζ×LQ / (dA×SC), the gate flow coefficient lC is obtained, where ζ is the correction coefficient. The gate flow coefficient is multiplied by the flow correction coefficient lxz to obtain the gate hydraulic value. The gate metal material is passed through a metallographic microscope to obtain a gate metallographic image, which is divided into several areas. The area where the grain boundary widens or the phase structure changes is defined as the metallographic change area. The area of ​​the metallographic change area is counted and divided by the total area of ​​the metallographic area to obtain the gate material micro-nodal change value.

[0020] Furthermore, the steps for analyzing the water pump shaft circle deviation are as follows:

[0021] Step 5: Perform fast Fourier transformation on the horizontal displacement sequence x(m) and the vertical displacement sequence y(m) to obtain the horizontal and vertical frequency spectrums in the frequency domain. Divide the rotation speed of the water pump shaft by 60 to obtain the rotation frequency. Obtain the frequency points corresponding to the horizontal and vertical rotation frequencies on the frequency spectrum. Subtract the frequency points in the vertical direction from the frequency points in the horizontal direction to obtain the phase difference xw of the water pump. According to the formula Get the water pump centering value DZ, g3 = 1 / (|sw-q1|+π), where |sw-q1| is the absolute value of the difference between the specific value xw and the four values ​​of 0°, 90°, 180° and 270° with the smallest absolute value, and g1 and g2 are both natural constants;

[0022] Step 5: Multiply the sum of the pump shaft alignment value ZD and the pump centering value DZ by the weight factor coefficient p1 to obtain the product value one, multiply the pump shaft track deviation value PB by the weight factor coefficient p2 to obtain the product value two, divide the product value two by the product value one to obtain the pump shaft circular deviation value.

[0023] Furthermore, the steps of analyzing the water pump shaft alignment value are as follows:

[0024] Step 1: Install a displacement sensor on the water pump journal to obtain the horizontal displacement sequence x(m) and vertical displacement sequence y(m) of the axis, where m is the serial number of the monitoring time. Calculate the coordinate point (X(m), Y(m)) of the axis in the plane rectangular coordinate system, X(m) = x(m) + x0, Y(m) = y(m) + y0, where x0 and y0 are the initial offsets of the axis in the horizontal and vertical directions, respectively. Calculate the horizontal average value of the axis coordinates according to the formula The perpendicular mean of the axis coordinates

[0025] Step 2: According to the formula and Get the axis coordinates (X d (m), Y d (m)), establish the matrix D, the characteristic equation det(D-ν×G)=0, where G is the matrix Solve to obtain ν1 and ν2;

[0026] Step 3: Obtain the pump shaft track deviation value PB according to the formula;

[0027] Step 4: For the axis coordinate points (X(m), Y(m)), the symmetrical points about the x-axis (X(m), -Y(m)) and the symmetrical points about the y-axis (-X(m), Y(m)), calculate the distance Dx from each point to the symmetrical points of the x-axis and the distance Dy from each point to the symmetrical points of the y-axis. According to the formula ZD=h1×(1-Dx / DXmxa)+h2×(1-Dy / DYmxa), calculate the pump shaft alignment value ZD, where h1 and h2 are the set weight factor coefficients of the distance from each point to the symmetrical points of the x-axis and the distance from each point to the symmetrical points of the y-axis, DXmxa is the maximum aperture of the pump axis trajectory on the x-axis, and DYmxa is the maximum aperture of the pump axis trajectory on the y-axis.

[0028] Furthermore, the lubricating oil stripping value analysis steps are as follows:

[0029] The lubricating oil oxidation products and lubricating oil oxygen velocity values ​​are marked as yh and ys, respectively, and normalized with the particle number proportions b1, b2, b3, b4 and the total number of particles Zh. According to the set formula The lubricating oil stripping value Bs is calculated, c1, c2, c3, c4, c5, c6, c7 and c8 are all set correction factor coefficients, and e is a natural constant.

[0030] Furthermore, the analysis steps of the particle number ratio, the total number of particles, the lubricating oil oxidation products and the lubricating oil oxygen velocity value are as follows:

[0031] A laser particle size analyzer is used to emit a laser beam to irradiate the metal particles in the lubricating oil of the equipment, and the angle and intensity distribution of the scattered light are detected. The Mie scattering theory is used to calculate the proportion of the number of metal particles in the range of a1, a2, a3 and a4, and they are marked as b1, b2, b3 and b4 respectively. The total number of metal particles is counted and marked as Zh. The lubricating oil of the equipment is scanned by an infrared spectrometer and Fourier transform is performed. The characteristic absorption peaks of 1600-1800 wavenumbers and 3200-3400 wavenumbers are integrated and calculated to obtain the area of ​​the absorption peak, which is multiplied by the correction factor coefficient to obtain the carbonyl compound content and hydroxyl compound content, respectively. The lubricating oil oxidation products are summed up, and the acidic substance content of the lubricating oil is measured by potentiometric titration. The electrolysis current and duration of the lubricating oil are determined by Karl Fischer coulometric titration. The electrolysis current and electrolysis duration are multiplied to obtain the lubricating oil oxygen rate value.

[0032] Furthermore, the pump stations in different states perform corresponding maintenance signal analysis steps as follows:

[0033] Normalize the abnormal operation value of the pump station equipment and the abnormal value of electrical equipment fault DZY, multiply the abnormal operation value of the pump station equipment by the correction coefficient xg1 to obtain the product value three, multiply the abnormal value of electrical equipment fault DZY by the correction coefficient xg2 to obtain the product value four, add the product value three to the product value four to obtain the abnormal operation value of the pump station monitoring;

[0034] When the pump station monitoring operation fault value is within the interval TX3, a pump station operation fault signal is issued and sent to the maintenance personnel with label one; when the pump station monitoring operation fault value is within the interval TX2, a pump station operation hidden danger signal is issued and sent to the maintenance personnel with label two; when the pump station monitoring operation fault value is within the interval TX1, the historical monitoring operation fault value of the pump station is obtained, and the historical monitoring time is used as the horizontal coordinate, and the monitoring operation fault value is used as the vertical coordinate to establish a monitoring operation fault value change curve, and a maximum value straight line of the interval TX1 is established in the curve chart, and the closed area formed by the curve and the maximum value straight line of the interval TX1 and the vertical axis is obtained, and the curve chart of each monitoring time point is tangent processed, and the abnormal growth rate point ratio value is analyzed to obtain the abnormal growth rate point ratio value and the closed area area. The pump station operation fault increase value is obtained by summing the statistical abnormal growth rate point ratio value and the closed area area. When the pump station operation fault increase value is greater than the set threshold PP1, a pump station operation hidden danger signal is issued and sent to the maintenance personnel with label two.

[0035] Furthermore, the electrical equipment electrical fault abnormal value analysis steps are as follows:

[0036] The fault anomaly degree of the electrical equipment operation monitored in the pump station is evaluated by evaluating the operating electrical parameters, operating thermal state, electrical insulation life, and electrical control communication characteristics of the electrical equipment. The operating electrical parameters refer to the voltage flicker value of the electrical equipment, the motor resonant frequency, and the motor total harmonic distortion rate, and they are summed to obtain the operating electrical de-parameter value; the operating thermal state refers to the temperature rise gradient of the electrical equipment and the power utilization rate of the pump station. The temperature rise gradient of the electrical equipment is subtracted from the set threshold value to obtain the absolute value and the inverse is processed, and then added to the power utilization rate of the pump station to obtain the operating thermal state value; the electrical insulation life refers to the insulation dielectric loss factor of the electrical equipment, the control system time delay, and the remaining life value of the electrical equipment. The sum of the insulation dielectric loss factor of the electrical equipment and the control system time delay is divided by the remaining life value of the electrical equipment to obtain the electrical absolute life value; the electrical control communication characteristics refer to the control system communication link bit error rate and the control system main and standby system data redundancy error, and they are summed to obtain the operating control de-parameter value;

[0037] The operating electrical parameter-off value, operating temperature state value, electrical life value, and operating control parameter-off value are calculated to obtain the electrical equipment electrical fault abnormality value DZY.

[0038] In a second aspect, the present invention provides a method for extracting pump station monitoring signs, comprising the following steps:

[0039] S1: Analyze the oil particles, oxidation products and acidic substances to obtain the lubricating oil stripping value;

[0040] S2: Analyze the axial displacement, symmetry and centering of the water pump to obtain the axial circular deviation of the water pump;

[0041] S3: Analyze the gate mode, metallographic structure and flow state to obtain the gate operation abnormal value, and analyze it with the lubricating oil stripping value and the water pump shaft circle deviation value to obtain the pump station equipment operation abnormal value;

[0042] S4: Evaluate the operating electrical parameters, operating temperature status, electrical insulation life, and electrical control communication characteristics of the electrical equipment to obtain electrical barrier abnormality values ​​of the electrical equipment;

[0043] S5: Determine the monitoring status of the pump station and execute corresponding maintenance signals for pump stations in different states.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention receives oil information, analyzes oil particles, oxidation products, and acidic substances to obtain lubricating oil loss values, analyzes water pump axial displacement, symmetry, and centering to obtain water pump axial circular deviation values, analyzes gate mode, metallographic structure, and flow state to obtain gate operation anomaly values, and analyzes lubricating oil loss values ​​and water pump axial circular deviation values ​​to obtain pump station equipment operation anomaly values, evaluates electrical equipment operating parameters, operating thermal conditions, electrical insulation life, and electrical control communication characteristics to obtain electrical equipment electrical barrier anomaly values, and can analyze the pump station operation status accurately from multiple perspectives to ensure the accuracy of system identification.

[0046] 2. The present invention determines the monitoring status of the pump station by receiving abnormal values ​​of the operation status of the pump station equipment and the abnormal values ​​of the electrical fault of the electrical equipment, and executes corresponding maintenance signals for pump stations in different states. The status of the pump station can be determined and reported to the maintenance personnel in time. The situation of pump station failure can be greatly reduced, the life experience of nearby residents is improved, the normal production of the factory is guaranteed, and the cost of pump station maintenance can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. The following drawings are not intentionally scaled according to the actual sizes, and the focus is on illustrating the main purpose of the present invention.

[0048] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present invention.

[0050] like Figure 1 As shown, a pumping station monitoring symptom extraction system includes a data acquisition module, an equipment module, an electrical module, and a judgment and maintenance module.

[0051] The data acquisition module is used to collect oil fluid information, water pump information, gate information, and electrical information, and send them to the equipment module and the electrical module.

[0052] The equipment module includes an oil fluid analysis unit, a water pump analysis unit, and a gate analysis unit.

[0053] The oil fluid analysis unit is used to receive the oil fluid information, and based on this, analyze the oil fluid particles, oxidation products, and acidic substances to obtain the lubricating oil fluid wear value. The specific analysis is as follows:

[0054] The laser particle size analyzer emits a laser beam to irradiate the metal particles in the lubricating oil fluid of the equipment, detects the angle and intensity distribution of the scattered light, and uses the Mie scattering theory to calculate the proportion of the number of particles with metal particle sizes in the ranges of a1, a2, a3, and a4, and are respectively marked as b1, b2, b3, and b4, where a1 is 0 - 5 microns, a2 is 5 - 10 microns, a3 is 10 - 20 microns, a4 is greater than 20 microns, the total number of metal particles is counted and marked as Zh. The lubricating oil fluid of the equipment is scanned by an infrared spectrometer, and Fourier transform is performed. The characteristic absorption peaks at wave numbers of 1600 - 1800 and 3200 - 3400 are respectively integrated to calculate the area of the absorption peaks, multiplied by the correction factor coefficient to obtain the carbonyl compound content and the hydroxyl compound respectively, and the sum is obtained as the lubricating oil fluid oxidation product. The acidic substance content of the lubricating oil fluid is measured by potentiometric titration, and the electrolytic current and duration of the lubricating oil fluid are measured by Karl Fischer coulomb titration. The electrolytic current and the electrolytic duration are multiplied to obtain the oxygen velocity value of the lubricating oil fluid;

[0055] The lubricating oil fluid oxidation product and the oxygen velocity value of the lubricating oil fluid are respectively marked as yh and ys, and are normalized with the particle number proportion b1, b2, b3, b4 and the total number of particle numbers Zh, and the lubricating oil fluid wear value Bs is calculated according to the set formula c1, c2, c3, c4, c5, c6, c7, and c8 are all set correction factor coefficients, and c1 > c5, c2 > c6, c3 < c7, c4 < c8, e is the natural constant, with a value of 2.718. It should be noted that when the proportion of large particles greater than 20 microns in the lubricating fluid particles exceeds 10%, the wear degree between components is greatly improved.

[0056] The water pump analysis unit is used to analyze the axial displacement, symmetry, and alignment of the water pump to obtain the water pump shaft position circular deviation value. The specific analysis is as follows:

[0057] Step 1: Install a displacement sensor on the water pump journal to obtain the horizontal displacement sequence x(m) and the vertical displacement sequence y(m) of the axis, where m is the serial number of the monitoring time, m=1, 2,..., M, and M is the maximum value of the serial number of the monitoring time. Calculate the coordinate point (X(m), Y(m)) of the axis in the plane rectangular coordinate system, where X(m)=x(m)+x0, Y(m)=y(m)+y0, x0 and y0 are the initial offsets of the axis in the horizontal and vertical directions, respectively. According to the formula and Calculate the average axis coordinate level The perpendicular mean of the axis coordinates

[0058] Step 2: According to the formula and Get the axis coordinates (X d (m), Y d (m)), build the matrix in Characteristic equation det(D-ν×G)=0, where G is a matrix Solved

[0059] Step 3: According to the formula Get the pump shaft track deviation value PB, μ is the correction factor coefficient, and the specific value is determined by personnel in this professional field;

[0060] Step 4: For the axis coordinate point (X(m), Y(m)), the symmetrical point about the x-axis (X(m), -Y(m)) and the symmetrical point about the y-axis (-X(m), Y(m)), according to the formula and Calculate the sum of the distances Dx from each point to the symmetrical point on the x-axis and the sum of the distances Dy from each point to the symmetrical point on the y-axis. According to the formula ZD=h1×(1-Dx / DXmxa)+h2×(1-Dy / DYmxa), calculate the water pump shaft alignment value ZD. h1 and h2 are respectively the set weight factor coefficients of the sum of the distances from each point to the symmetrical point on the x-axis and the sum of the distances from each point to the symmetrical point on the y-axis. The specific values ​​are 0.6 and 0.4. DXmxa is the maximum aperture of the water pump axis trajectory on the x-axis, and DYmxa is the maximum aperture of the water pump axis trajectory on the y-axis.

[0061] Step 5: Perform fast Fourier transformation on the horizontal displacement sequence x(m) and the vertical displacement sequence y(m) to obtain the horizontal and vertical frequency spectrums in the frequency domain. Divide the rotation speed of the water pump shaft by 60 to obtain the rotation frequency. Obtain the frequency points corresponding to the horizontal and vertical rotation frequencies on the frequency spectrum. Subtract the frequency points in the vertical direction from the frequency points in the horizontal direction to obtain the phase difference xw of the water pump. According to the formula The pump center value DZ is obtained, g3 = 1 / (|sw-q1|+π), where |sw-q1| is the absolute value of the difference between the specific value xw and the four values ​​of 0°, 90°, 180° and 270° with the smallest absolute value, g1 and g2 are both natural constants, and g1>g2>g3, which are 8.12 and 8.02 respectively;

[0062] Step 5: Multiply the sum of the pump shaft alignment value ZD and the pump centering value DZ by the weight factor coefficient p1 to obtain the product value one, multiply the pump shaft track deviation value PB by the weight factor coefficient p2 to obtain the product value two, divide the product value two by the product value one to obtain the pump shaft circular deviation value.

[0063] The gate information is received through the gate analysis unit, and the gate mode, metallographic structure and flow state are analyzed to obtain the gate operation abnormal value. The gate operation abnormal value is analyzed with the lubricating oil stripping value and the water pump shaft circle deviation value to obtain the pump station equipment operation abnormal value. The specific analysis is as follows:

[0064] Get the length, width, and thickness of the pump station gate, marked as cd, kd, and hd, respectively, and the elastic modulus, Poisson's ratio, and density of the gate material, marked as tm, bs, and md, respectively. According to the formula Kg = τ × tm × hd 2.1 / (1-bs 2 ), and the bending stiffness value of the gate is obtained. Kg, τ is the correction factor coefficient, according to the formula The gate's natural frequency Gp is ​​obtained. tx1 and tx2 are both set weight factor coefficients, which are positive integers. The gate's natural frequency is subtracted from the pump's operating frequency, and the absolute value is taken to obtain the gate's fixed positive frequency value. The gate's damping value is obtained and added to the fixed positive frequency value to obtain the gate's modal value. The gate's surface roughness cc is obtained through a surface roughness meter, and the gate's water flow velocity field and vortex field are obtained through particle image velocimetry technology. The vortex field obtained is calculated by dividing the water-passing section into several area units. The vorticity and velocity vector of each unit, the vorticity is the curl of the velocity vector, and the vorticity flux wl is obtained by integrating the entire water-passing surface. The water velocity sequence with time is measured at the gate position. The water velocity sequence is integrated over time and multiplied by the measurement time to obtain the average velocity. The average velocity is subtracted from the flow velocity sequence to obtain the velocity pulsation sequence. The root mean square velocity pulsation value jm is obtained by integrating the square of the velocity pulsation sequence and then multiplying it by the measurement time and then taking the square root. The viscosity nd and density md of the water flow, velocity sv, according to the formula sx = md × sv / nd, get the water flow number sx, according to the formula lxz = (1-t1 × cc) × (1-t2 × wl) × (1-t3 × jm) × t4 × sx, calculate the flow correction coefficient lxz, t1, t2, t3 and t4 are the set influencing factor coefficients, and the specific values ​​are determined by personnel in this professional field. Get the gate water cross-sectional area dA, install liquid level sensors upstream and downstream of the gate to measure the water level, and calculate the water level difference SC, ultrasonic flow meter The gate flow value LQ is measured, and the gate flow coefficient lC is obtained according to the formula lC=ζ×LQ / (dA×SC), where ζ is the correction coefficient. The gate flow coefficient is multiplied by the flow correction coefficient lxz to obtain the gate hydraulic value; the gate metal material is passed through a metallographic microscope to obtain a gate metallographic image, and the gate metallographic image is divided into several areas. The area where the grain boundary widens or the phase structure changes is defined as the metallographic change area. The area of ​​the metallographic change area is counted and divided by the total area of ​​the metallographic area to obtain the gate material micro-stub value;

[0065] The gate modal value, gate material micro-strumentation value and gate hydraulic value are marked as Zm, Zc and Zs respectively, and normalized. According to the set formula model Yyz=k2×Zc / (k1×Zm+k3×Zs), the gate operation value Yyz is calculated, where k1, k2 and k3 are the set weight factor coefficients of the gate modal value, gate material micro-strumentation value and gate hydraulic value, and the specific values ​​are 1.012, 1.555 and 2.114 respectively;

[0066] The lubricating oil stripping value Bs, the water pump shaft circle deviation value and the gate operation abnormal value Yyz are normalized. The lubricating oil stripping value Bs is used as the bottom plate length of the trapezoid, the water pump shaft circle deviation value is used as the upper side length of the trapezoid, and the gate operation abnormal value Yyz is used as the height of the trapezoid. A trapezoid is constructed, and the circumference of the trapezoid is identified and marked as the pump station equipment operation abnormal value.

[0067] The electrical module is used to evaluate the operating electrical parameters, operating temperature status, electrical insulation life, and electrical control communication characteristics of the electrical equipment to obtain the electrical equipment electrical barrier abnormality values. The specific analysis is as follows:

[0068] The fault anomaly degree of the electrical equipment in the pump station is monitored by evaluating the operating electrical parameters, operating thermal state, electrical insulation life, and electrical control communication characteristics of the electrical equipment. The operating electrical parameters refer to the voltage flicker value of the electrical equipment, the motor resonant frequency, and the motor total harmonic distortion rate, and they are summed to obtain the operating electrical parameter value; the operating thermal state refers to the temperature rise gradient of the electrical equipment and the power utilization rate of the pump station. The temperature rise gradient of the electrical equipment is subtracted from the set threshold value, the absolute value is taken, and the inverse processing is performed, and the value is added to the power utilization rate of the pump station to obtain the operating thermal state value. The power utilization rate of the pump station refers to the output water volume and the consumption. The ratio of electric quantity; electrical insulation life refers to the insulation dielectric loss factor of electrical equipment, control system time delay, and the remaining life value of electrical equipment. The sum of the insulation dielectric loss factor of electrical equipment and the control system time delay is divided by the remaining life value of electrical equipment to obtain the electrical insulation life value. The control system time delay refers to the time delay between the input signal and the output signal of the control system. The remaining life value of electrical equipment refers to the standard life value of electrical equipment minus the service life value; electrical control communication characteristics refer to the control system communication link bit error rate, the control system main and standby system data redundancy error, and sum them to obtain the operation control parameter value;

[0069] The running electrical parameter-free value, running warm state value, electrical life value, and running control parameter-free value are marked as Dtz, Wrz, Djs, and Ykt, respectively, and normalized according to the set formula. The calculation is performed to obtain the electrical equipment electrical fault abnormality value DZY, where gx1, gx2, gx3 and gx4 are the set correction factor coefficients of the operating electrical off-parameter value, operating warm state value, electrical life value and operating control off-parameter value, respectively, which are used to improve the accuracy of the calculation. The specific values ​​are determined by personnel in this professional field.

[0070] The judgment maintenance module judges the monitoring status of the pump station by receiving the abnormal values ​​of the pump station equipment operation status and the abnormal values ​​of the electrical equipment electrical fault, and executes corresponding maintenance signals for pump stations in different states. The specific analysis is as follows:

[0071] Normalize the abnormal operation value of the pump station equipment and the abnormal value of electrical equipment fault DZY, multiply the abnormal operation value of the pump station equipment by the correction coefficient xg1 to obtain the product value three, multiply the abnormal value of electrical equipment fault DZY by the correction coefficient xg2 to obtain the product value four, add the product value three to the product value four to obtain the abnormal operation value of the pump station monitoring;

[0072] Set the pump station monitoring and operation fault value comparison intervals TX1, TX2, and TX3, where the comparison intervals TX1, TX2, and TX3 increase in a gradient, and the specific gradient values ​​are 50 and 80;

[0073] When the pump station monitoring operation fault value is within the interval TX3, a pump station operation fault signal is issued, and sent to the maintenance personnel with the message "the pump station is in an abnormal fault state, immediately stop the pump station operation for inspection and maintenance"; when the pump station monitoring operation fault value is within the interval TX2, a pump station operation hidden danger signal is issued, and sent to the maintenance personnel with the message "the pump station is in an abnormal hidden danger state, arrange pump station fault inspection and maintenance according to the pump station operation situation"; when the pump station monitoring operation fault value is within the interval TX1, the historical monitoring operation fault value of the pump station is obtained, and the historical monitoring time is used as the horizontal coordinate, and the monitoring operation fault value is used as the vertical coordinate to establish a monitoring operation fault value change curve chart, and Establish the maximum value straight line of interval TX1 in the curve graph, obtain the closed area formed by the curve, the maximum value straight line of interval TX1 and the vertical axis, perform tangent processing on the curve graph at each monitoring time point, obtain the tangent slope of each monitoring point, when the tangent slope at a monitoring time point is greater than the set tangent slope, the monitoring time point is determined to be an abnormal growth point, and the proportion of abnormal growth points is summed with the closed area to obtain the pump station operation fault increase value, when the pump station operation fault increase value is greater than the set threshold PP1, a pump station operation hidden danger signal is issued, and sent to the maintenance personnel with the message "the pump station is in an abnormal hidden danger state, and pump station fault investigation and maintenance are arranged according to the pump station operation status".

[0074] A method for extracting pump station monitoring signs, comprising the following steps:

[0075] S1: Analyze the oil particles, oxidation products and acidic substances to obtain the lubricating oil stripping value;

[0076] S2: Analyze the axial displacement, symmetry and centering of the water pump to obtain the axial circular deviation of the water pump;

[0077] S3: Analyze the gate mode, metallographic structure and flow state to obtain the gate operation abnormal value, and analyze it with the lubricating oil stripping value and the water pump shaft circle deviation value to obtain the pump station equipment operation abnormal value;

[0078] S4: Evaluate the operating electrical parameters, operating temperature status, electrical insulation life, and electrical control communication characteristics of the electrical equipment to obtain electrical barrier abnormality values ​​of the electrical equipment;

[0079] S5: Determine the monitoring status of the pump station and execute corresponding maintenance signals for pump stations in different states.

[0080] The above is an explanation of the present invention and should not be considered as a limitation thereof. Although several exemplary embodiments of the present invention have been described, it will be readily appreciated by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present invention. Therefore, all such modifications are intended to be included within the scope of the present invention as defined in the claims. It should be understood that the above is an explanation of the present invention and should not be considered as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present invention is defined by the claims and their equivalents.

Claims

1. A pump station monitoring sign extraction system, characterized in that: include: Data acquisition module, used to collect oil information, water pump information, gate information and electrical information, and send it to the equipment module and electrical module; The equipment module includes an oil analysis unit, a water pump analysis unit and a gate analysis unit; the oil analysis unit is used to receive oil information, and analyze the oil particles, oxidation products and acidic substances based on the oil information to obtain the lubricating oil stripping value; the water pump analysis unit is used to analyze the water pump shaft displacement, symmetry and centering to obtain the water pump shaft circle deviation value; the gate analysis unit analyzes the gate mode, metallographic structure and flow state to obtain the gate operation abnormality value, and analyzes it with the lubricating oil stripping value and the water pump shaft circle deviation value to obtain the pump station equipment operation abnormality value; The electrical module is used to evaluate the operating electrical parameters, operating temperature status, electrical insulation life, and electrical control communication characteristics of electrical equipment to obtain electrical barrier anomalies of the electrical equipment; The determination and maintenance module determines the monitoring status of the pumping station by receiving the abnormal values ​​of the pumping station equipment operation status and the abnormal values ​​of the electrical equipment electrical fault, and executes corresponding maintenance signals for pumping stations in different states.

2. A pump station monitoring sign extraction system according to claim 1, characterized in that: The steps of analyzing the abnormal value of the pump station equipment operation state are as follows: The gate modal value, gate material micro-strumentation value and gate hydraulic value are marked as Zm, Zc and Zs respectively, and normalized. According to the set formula model Yyz=k2×Zc / (k1×Zm+k3×Zs), the gate operation value Yyz is calculated, where k1, k2 and k3 are the set weight factor coefficients of the gate modal value, gate material micro-strumentation value and gate hydraulic value respectively; The lubricating oil stripping value Bs, the water pump shaft circle deviation value and the gate operation abnormal value Yyz are normalized. The lubricating oil stripping value Bs is used as the bottom plate length of the trapezoid, the water pump shaft circle deviation value is used as the upper side length of the trapezoid, and the gate operation abnormal value Yyz is used as the height of the trapezoid. A trapezoid is constructed, and the circumference of the trapezoid is identified and marked as the pump station equipment operation abnormal value.

3. A pump station monitoring sign extraction system according to claim 2, characterized in that: The analysis steps of the gate modal value, gate material micro-strument deformation value and gate hydraulic value are as follows: Obtain the length, width and thickness of the pump station gate, as well as the elastic modulus, Poisson's ratio and density of the gate material, and obtain the gate's flexural stiffness value Kg according to the formula. Obtain the gate's natural frequency Gp according to the formula, subtract the gate's natural frequency from the pump's operating frequency, take the absolute value, and obtain the gate's fixed positive frequency value. Obtain the gate's damping value, add it to the fixed positive frequency value, and obtain the gate's modal value; obtain the gate's surface roughness cc through a surface roughness meter, obtain the gate's velocity field and vortex field through particle image velocimetry technology, and then obtain The vorticity field is obtained by dividing the water-passing section into several area units, calculating the vorticity and velocity vector of each unit. The vorticity is the curl of the velocity vector, and integrating the entire water-passing section to obtain the vorticity flux wl. The water velocity sequence with time is measured at the gate position. The water velocity sequence is integrated over time and multiplied by the measurement time to obtain the average velocity. The average velocity is subtracted from the water velocity sequence to obtain the velocity pulsation sequence. The root mean square is obtained by integrating the square of the velocity pulsation sequence and multiplying it by the measurement time and then taking the square root. Velocity pulsation value jm, water viscosity nd and density md, velocity sv, according to the formula sx = md × sv / nd, get the water flow number sx, according to the formula lxz = (1-t1 × cc) × (1-t2 × wl) × (1-t3 × jm) × t4 × sx, calculate the flow correction coefficient lxz, t1, t2, t3 and t4 are the set influencing factor coefficients, get the gate water cross-sectional area dA, install liquid level sensors upstream and downstream of the gate to measure the water level, calculate the water level difference SC, ultrasonic The wave flowmeter measures the gate flow value LQ. According to the formula lC=ζ×LQ / (dA×SC), the gate flow coefficient lC is obtained, where ζ is the correction coefficient. The gate flow coefficient is multiplied by the flow correction coefficient lxz to obtain the gate hydraulic value. The gate metal material is passed through a metallographic microscope to obtain a gate metallographic image, which is divided into several areas. The area where the grain boundary widens or the phase structure changes is defined as the metallographic change area. The area of ​​the metallographic change area is counted and divided by the total area of ​​the metallographic area to obtain the gate material micro-nodal change value.

4. A pump station monitoring sign extraction system according to claim 2, characterized in that: The steps for analyzing the axial circular deviation of the water pump are as follows: Step 5: Perform fast Fourier transformation on the horizontal displacement sequence x(m) and the vertical displacement sequence y(m) to obtain the horizontal and vertical frequency spectrums in the frequency domain. Divide the rotation speed of the water pump shaft by 60 to obtain the rotation frequency. Obtain the frequency points corresponding to the horizontal and vertical rotation frequencies on the frequency spectrum. Subtract the frequency points in the vertical direction from the frequency points in the horizontal direction to obtain the phase difference xw of the water pump. According to the formula Get the water pump centering value DZ, g3 = 1 / (|sw-q1|+π), where |sw-q1| is the absolute value of the difference between the specific value xw and the four values ​​of 0°, 90°, 180° and 270° with the smallest absolute value, and g1 and g2 are both natural constants; Step 5: Multiply the sum of the pump shaft alignment value ZD and the pump centering value DZ by the weight factor coefficient p1 to obtain the product value one, multiply the pump shaft track deviation value PB by the weight factor coefficient p2 to obtain the product value two, divide the product value two by the product value one to obtain the pump shaft circular deviation value.

5. A pump station monitoring sign extraction system according to claim 4, characterized in that: The steps for analyzing the water pump shaft alignment value are as follows: Step 1: Install a displacement sensor on the water pump journal to obtain the horizontal displacement sequence x(m) and vertical displacement sequence y(m) of the axis, where m is the serial number of the monitoring time. Calculate the coordinate point (X(m), Y(m)) of the axis in the plane rectangular coordinate system, X(m) = x(m) + x0, Y(m) = y(m) + y0, where x0 and y0 are the initial offsets of the axis in the horizontal and vertical directions, respectively. Calculate the horizontal average value of the axis coordinates according to the formula The perpendicular mean of the axis coordinates Step 2: According to the formula and Get the axis coordinates (Xd(m), Yd(m)) of the central processing, establish the matrix D, and the characteristic equation det(D-ν×G)=0, where G is the matrix Solve to obtain ν1 and ν2; Step 3: Obtain the pump shaft track deviation value PB according to the formula; Step 4: For the axis coordinate points (X(m), Y(m)), the symmetrical points about the x-axis (X(m), -Y(m)) and the symmetrical points about the y-axis (-X(m), Y(m)), calculate the distance Dx from each point to the symmetrical points of the x-axis and the distance Dy from each point to the symmetrical points of the y-axis. According to the formula ZD=h1×(1-Dx / DXmxa)+h2×(1-Dy / DYmxa), calculate the pump shaft alignment value ZD, where h1 and h2 are the set weight factor coefficients of the distance from each point to the symmetrical points of the x-axis and the distance from each point to the symmetrical points of the y-axis, DXmxa is the maximum aperture of the pump axis trajectory on the x-axis, and DYmxa is the maximum aperture of the pump axis trajectory on the y-axis.

6. A pump station monitoring sign extraction system according to claim 2, characterized in that: The lubricating oil stripping value analysis steps are as follows: The lubricating oil oxidation products and lubricating oil oxygen velocity values ​​are marked as yh and ys, respectively, and normalized with the particle number proportions b1, b2, b3, b4 and the total number of particles Zh. According to the set formula The lubricating oil stripping value Bs is calculated, c1, c2, c3, c4, c5, c6, c7 and c8 are all set correction factor coefficients, and e is a natural constant.

7. A pump station monitoring sign extraction system according to claim 6, characterized in that: The analysis steps of the particle number ratio, particle number sum, lubricating oil oxidation product and lubricating oil oxygen velocity value are as follows: A laser particle size analyzer is used to emit a laser beam to irradiate the metal particles in the lubricating oil of the equipment, and the angle and intensity distribution of the scattered light are detected. The Mie scattering theory is used to calculate the proportion of the number of metal particles in the range of a1, a2, a3 and a4, and they are marked as b1, b2, b3 and b4 respectively. The total number of metal particles is counted and marked as Zh. The lubricating oil of the equipment is scanned by an infrared spectrometer and Fourier transform is performed. The characteristic absorption peaks of 1600-1800 wavenumbers and 3200-3400 wavenumbers are integrated and calculated to obtain the area of ​​the absorption peak, which is multiplied by the correction factor coefficient to obtain the carbonyl compound content and hydroxyl compound content, respectively. The lubricating oil oxidation products are summed up, and the acidic substance content of the lubricating oil is measured by potentiometric titration. The electrolysis current and duration of the lubricating oil are determined by Karl Fischer coulometric titration. The electrolysis current and electrolysis duration are multiplied to obtain the lubricating oil oxygen rate value.

8. A pump station monitoring sign extraction system according to claim 1, characterized in that: The steps of performing corresponding maintenance signal analysis for the pump stations in different states are as follows: Normalize the abnormal operation value of the pump station equipment and the abnormal value of electrical equipment fault DZY, multiply the abnormal operation value of the pump station equipment by the correction coefficient xg1 to obtain the product value three, multiply the abnormal value of electrical equipment fault DZY by the correction coefficient xg2 to obtain the product value four, add the product value three to the product value four to obtain the abnormal operation value of the pump station monitoring; When the pump station monitoring operation fault value is within the interval TX3, a pump station operation fault signal is issued and sent to the maintenance personnel with label one; when the pump station monitoring operation fault value is within the interval TX2, a pump station operation hidden danger signal is issued and sent to the maintenance personnel with label two; when the pump station monitoring operation fault value is within the interval TX1, the historical monitoring operation fault value of the pump station is obtained, and the historical monitoring time is used as the horizontal coordinate, and the monitoring operation fault value is used as the vertical coordinate to establish a monitoring operation fault value change curve, and a maximum value straight line of the interval TX1 is established in the curve chart, and the closed area formed by the curve and the maximum value straight line of the interval TX1 and the vertical axis is obtained, and the curve chart of each monitoring time point is tangent processed, and the abnormal growth rate point ratio value is analyzed to obtain the abnormal growth rate point ratio value and the closed area area. The pump station operation fault increase value is obtained by summing the statistical abnormal growth rate point ratio value and the closed area area. When the pump station operation fault increase value is greater than the set threshold PP1, a pump station operation hidden danger signal is issued and sent to the maintenance personnel with label two.

9. A pump station monitoring sign extraction system according to claim 8, characterized in that: The electrical equipment electrical fault abnormal value analysis steps are as follows: The fault anomaly degree of the electrical equipment in the pump station is monitored by evaluating the operating electrical parameters, operating thermal state, electrical insulation life, and electrical control communication characteristics of the electrical equipment. The operating electrical parameters refer to the voltage flicker value of the electrical equipment, the motor resonant frequency, and the motor total harmonic distortion rate, and they are summed to obtain the operating electrical parameter value; the operating thermal state refers to the temperature rise gradient of the electrical equipment and the power utilization rate of the pump station. The temperature rise gradient of the electrical equipment is subtracted from the set threshold, the absolute value is taken, and the inverse is processed, and then added to the power utilization rate of the pump station to obtain the operating thermal state value; The electrical insulation life refers to the insulation dielectric loss factor of the electrical equipment, the control system time delay, and the remaining life value of the electrical equipment. The sum of the insulation dielectric loss factor of the electrical equipment and the control system time delay is divided by the remaining life value of the electrical equipment to obtain the electrical insulation life value; The electrical control communication characteristics refer to the bit error rate of the control system communication link and the data redundancy error of the control system main and standby systems, which are summed to obtain the running control disconnection parameter value; The operating electrical parameter-off value, operating temperature state value, electrical life value, and operating control parameter-off value are calculated to obtain the electrical equipment electrical fault abnormality value DZY.

10. A method for extracting signs of pump station monitoring, characterized in that A pump station monitoring sign extraction system applied to any one of claims 1 to 9 comprises the following steps: S1: Analyze the oil particles, oxidation products and acidic substances to obtain the lubricating oil stripping value; S2: Analyze the axial displacement, symmetry and centering of the water pump to obtain the axial circular deviation of the water pump; S3: Analyze the gate mode, metallographic structure and flow state to obtain the gate operation abnormal value, and analyze it with the lubricating oil stripping value and the water pump shaft circle deviation value to obtain the pump station equipment operation abnormal value; S4: Evaluate the operating electrical parameters, operating temperature status, electrical insulation life, and electrical control communication characteristics of the electrical equipment to obtain electrical barrier abnormality values ​​of the electrical equipment; S5: Determine the monitoring status of the pump station and execute corresponding maintenance signals for pump stations in different states.

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