Hydraulic monitoring and control system for environmentally friendly lime shaft kilns

Abstract

The present invention belongs to the technical field of lime shaft kiln control and management, and specifically relates to a hydraulic monitoring and control system suitable for an environmentally friendly lime shaft kiln, comprising a hydraulic loading control unit, a power source monitoring unit, a hydraulic cylinder motion monitoring unit, a real-time alarm unit and a remote control monitoring terminal; the present invention adopts a hydraulic pump station as a power source through the hydraulic loading control unit, and combines control elements such as a three-position four-way electromagnetic reversing valve, a relief valve, a one-way valve and a proportional pressure reducing valve to accurately control the hydraulic cylinder, and effectively monitors the power source, the hydraulic cylinder piston rod and the control element through the power source monitoring unit, the hydraulic cylinder motion monitoring unit and the control element evaluation unit, and promptly reminds management personnel to make targeted improvement measures, thereby significantly reducing the difficulty of management personnel's supervision, and realizing hydraulic monitoring and control of the lime shaft kiln with a high degree of intelligence.

Description

Technical Field

[0001] The present invention relates to the technical field of lime shaft kiln control, and in particular to a hydraulic monitoring and control system suitable for an environmentally friendly lime shaft kiln. Background Art

[0002] The parallel flow regenerative double-bore shaft kiln is a key piece of equipment in modern lime production. Most of the equipment on the parallel flow regenerative double-bore shaft kiln is hydraulically operated. The stable operation of the hydraulic system is the key to achieving automated control of the parallel flow regenerative double-bore shaft kiln. The hydraulic system of the lime shaft kiln uses liquid as the working medium for energy transmission. The rotation of the motor drives the rotation of the hydraulic pump, converting mechanical energy into the pressure energy of the hydraulic oil. The solenoid valve reversal converts the pressure energy of the hydraulic oil into mechanical energy, thereby actuating the cylinder to meet production needs.

[0003] However, the current monitoring and control of the hydraulic system of the lime shaft kiln has deficiencies in pressure control and dynamic loading. It is also difficult to effectively monitor the operating conditions of the power source, hydraulic cylinder, and control components and to provide reasonable abnormality judgment and early warning. This hinders managers from taking timely and targeted improvement measures, fails to effectively reduce the difficulty of management supervision, and has a low level of intelligence.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a hydraulic monitoring and control system suitable for an environmentally friendly lime shaft kiln. It solves the problems of the existing technology in monitoring and controlling the hydraulic system of the lime shaft kiln, such as the shortcomings in pressure control and dynamic loading, the difficulty in effectively monitoring the operating conditions of the power source, hydraulic cylinder and control elements and achieving reasonable abnormal judgment and early warning, the difficulty of supervision and the low level of intelligence.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The hydraulic monitoring and control system for environmentally friendly lime shaft kilns includes a hydraulic loading control unit, a power source monitoring unit, a hydraulic cylinder motion monitoring unit, a real-time alarm unit, and a remote control terminal. The hydraulic loading control unit uses a hydraulic pump station as its power source. Combined with control elements including a three-position, four-way solenoid directional valve, a relief valve, a check valve, and a proportional pressure reducing valve, it precisely controls the hydraulic cylinder. The proportional pressure reducing valve regulates pressure to meet the pressure requirements of the lime shaft kiln under different operating conditions. An accumulator is introduced at the outlet of the hydraulic pump station to buffer pressure pulsations and reduce energy consumption.

[0008] The power source monitoring unit monitors and analyzes the power source, and determines whether to generate a power source warning signal through analysis. When the power source warning signal is generated, it is sent to the real-time alarm unit; the hydraulic cylinder motion monitoring unit monitors and analyzes the motion state of the hydraulic cylinder piston rod, and determines whether to generate a hydraulic motion warning signal through analysis. When the hydraulic motion warning signal is generated, it is sent to the real-time alarm unit; when the real-time alarm unit receives a power source warning signal or a hydraulic motion warning signal, it triggers the alarm mechanism, generates corresponding alarm information and transmits it to the remote control monitoring end, which displays the alarm information and issues a warning.

[0009] Furthermore, the power source monitoring unit includes a tank level detection module, a working medium detection module, and a pump body operation detection module. The tank level detection module monitors the hydraulic oil level in the hydraulic pump station tank. When the level is lower than a preset level threshold, a level judgment symbol YP-1 is assigned.

[0010] The working medium detection module detects and comprehensively analyzes the hydraulic oil condition, and determines whether to assign the medium judgment symbol YP-2 through analysis; the pump body operation detection module performs operation detection and analysis on the hydraulic pump of the hydraulic pump station, and determines whether to assign the pump body judgment symbol YP-3 through analysis; a power source warning signal is generated when the liquid level judgment symbol YP-1, the medium judgment symbol YP-2 or the pump body judgment symbol YP-3 is assigned.

[0011] Furthermore, the specific analysis process of the working medium detection module is as follows:

[0012] The hydraulic oil temperature is collected, and the difference between the temperature and the median of the preset suitable hydraulic oil temperature range is calculated and the absolute value is taken to obtain the hydraulic oil temperature risk value. The solid particle content and the bubble content in the hydraulic oil are collected and marked as the hydraulic oil particle content value and the hydraulic oil gas content value respectively;

[0013] The hydraulic oil detection value is obtained by numerically calculating the hydraulic oil temperature risk value, the hydraulic oil particle value and the hydraulic oil gas value, and the hydraulic oil detection value is numerically compared with the preset hydraulic oil detection threshold. If the hydraulic oil detection value exceeds the preset hydraulic oil detection threshold, the medium judgment symbol YP-2 is assigned.

[0014] Furthermore, the specific analysis process of the pump operation detection module is as follows:

[0015] The pressure value and flow value output by the hydraulic pump in the hydraulic pump station are collected and marked as pump pressure detection value and pump volume detection value respectively. The pump pressure detection value and pump volume detection value are numerically compared with the preset pump pressure detection value range and the preset pump volume detection value range respectively. If the pump pressure detection value or the pump volume detection value is not within the corresponding preset range, the pump body judgment symbol YP-3 is assigned;

[0016] If the pump pressure detection value and the pump volume detection value are both within the corresponding preset ranges, the operating speed and the operating torque of the hydraulic pump are collected, and the deviation value of the operating speed compared to the set standard speed is marked as the pump speed deviation value, and the deviation value of the operating torque compared to the set standard torque is marked as the pump torque deviation value. In addition, the vibration amplitude value and the noise decibel value generated by the operation of the hydraulic pump are collected and marked as the pump motion characteristic value and the pump sound characteristic value respectively;

[0017] The pump body operation value is obtained by numerically calculating the pump speed deviation value, pump torque deviation value, pump motion characteristic value and pump sound characteristic value, and the pump body operation value is numerically compared with the preset pump body operation threshold value. If the pump body operation value exceeds the preset pump body operation threshold value, the pump body judgment symbol YP-3 is assigned.

[0018] Furthermore, the specific analysis process of the hydraulic cylinder motion monitoring unit is as follows:

[0019] By installing a displacement sensor on the piston rod of the hydraulic cylinder, the displacement changes of the piston rod are monitored, the displacement range of the piston rod is collected, and the displacement range of the piston rod is compared with the set standard range. The upper and lower displacement deviation values ​​are obtained based on this, and the upper and lower displacement deviation values ​​are numerically compared with the preset upper and lower displacement deviation thresholds, respectively. If the upper and lower displacement deviation values ​​or the lower displacement deviation values ​​exceed the corresponding preset thresholds, a hydraulic motion warning signal is generated.

[0020] Furthermore, if both the upper displacement deviation value and the lower displacement deviation value do not exceed the corresponding preset threshold value, the movement speed curve of the hydraulic cylinder per unit time is obtained, and a number of detection points are marked on the movement speed curve, and the interval between two adjacent detection points is the same; the hydraulic cylinder speed wave value is obtained by calculating the variance of the speed of all detection points, and the hydraulic cylinder speed wave value is numerically compared with the preset hydraulic cylinder speed wave threshold value. If the hydraulic cylinder speed wave value exceeds the preset hydraulic cylinder speed wave threshold value, a hydraulic movement warning signal is generated;

[0021] If the hydraulic cylinder speed wave value does not exceed the preset hydraulic cylinder speed wave threshold, the speeds of all detection points are averaged to obtain the hydraulic cylinder speed measurement value, the hydraulic cylinder speed measurement value is subtracted from the median of the preset hydraulic cylinder speed measurement value range and the absolute value is taken to obtain the hydraulic cylinder speed deviation value, and the proportion of the number of detection points whose speed is not within the preset hydraulic cylinder speed measurement value range is marked as the hydraulic cylinder speed deviation value, and the maximum deviation of the speed per unit time from the preset hydraulic cylinder speed measurement value range is marked as the hydraulic cylinder speed amplitude value;

[0022] The hydraulic cylinder risk coefficient is obtained by numerically calculating the hydraulic cylinder speed deviation value, the hydraulic cylinder speed difference value and the hydraulic cylinder speed amplitude value, and the hydraulic cylinder risk coefficient is numerically compared with the preset hydraulic cylinder risk coefficient threshold value. If the hydraulic cylinder risk coefficient exceeds the preset hydraulic cylinder risk coefficient threshold value, a hydraulic movement warning signal is generated.

[0023] Furthermore, the real-time alarm unit is communicatively connected to the control element evaluation unit, which performs performance evaluation and analysis on the control elements in the hydraulic loading control unit, and determines whether to generate a control hazard signal through analysis. When the control hazard signal is generated, it is sent to the real-time alarm unit. When the real-time alarm unit receives the control hazard signal, it triggers the alarm mechanism, generates corresponding alarm information and transmits it to the remote control monitoring terminal, which displays the alarm information and issues an early warning.

[0024] Furthermore, the specific analysis process of the control element evaluation unit is as follows:

[0025] All control elements in the hydraulic loading control unit are obtained, including a three-position four-way solenoid reversing valve, a relief valve, a one-way valve, and a proportional pressure reducing valve. The corresponding control element is marked as i, where i is a natural number greater than 1. The current operating status information of the control element i is collected, and based on the operating status information, whether the current operating status of the control element i meets the requirements is determined in real time. If the corresponding status does not meet the requirements, the control element i is determined to be in an abnormal control state.

[0026] The number of times that control element i is judged to be in a control abnormality state during the detection period is obtained and marked as the control abnormality value, and the delay time for control element i to respond when receiving the corresponding control instruction is collected and marked as the instruction execution delay time, the average of all instruction execution delay times within the detection period is calculated to obtain the instruction execution effectiveness value, and the proportion of instruction execution delay times that exceed the corresponding preset instruction execution delay time threshold during the detection period is marked as the instruction execution risk value;

[0027] The component alarm coefficient is obtained by numerically calculating the control frequency difference value, instruction execution effectiveness value and instruction execution risk value, and the component alarm coefficient is numerically compared with the corresponding preset component alarm coefficient threshold. If the component alarm coefficient exceeds the corresponding preset component alarm coefficient threshold, the control element i is marked as a poor control element; if a poor control element exists, a control risk signal is generated.

[0028] Furthermore, if there is no control failure element, the element alarm coefficient of the control element i is compared with the corresponding preset element alarm coefficient threshold to obtain the element alarm value, the element alarm values ​​of all control elements are averaged to obtain the control evaluation coefficient, and the control evaluation coefficient is numerically compared with the preset control evaluation coefficient threshold. If the control evaluation coefficient exceeds the preset control evaluation coefficient threshold, a control danger signal is generated.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. In the present invention, the hydraulic cylinder is precisely controlled by the hydraulic loading control unit, the power source monitoring unit monitors and analyzes the power source to determine whether a power source warning signal is generated, and the hydraulic cylinder motion monitoring unit monitors and analyzes the motion state of the hydraulic cylinder piston rod to determine whether a hydraulic motion warning signal is generated. When a power source warning signal or a hydraulic motion warning signal is generated, the management personnel are reminded to quickly conduct a cause investigation and analysis and take targeted improvement measures, significantly reducing the difficulty of supervision by the management personnel;

[0031] 2. In the present invention, the control element evaluation unit performs performance evaluation and analysis on the control elements in the hydraulic loading control unit to determine whether to generate a control hazard signal. When a control hazard signal is generated, the management personnel are reminded to inspect and adjust the corresponding control elements and strengthen the operation supervision of the control elements, thereby reducing subsequent control risks. The system has a high degree of intelligence and further reduces the difficulty of supervision for management personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings;

[0033] Figure 1 This is a system block diagram of Embodiment 1 of the present invention;

[0034] Figure 2 This is a system block diagram of Example 2 of the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example 1: Figure 1As shown, the hydraulic monitoring and control system for an environmentally friendly lime shaft kiln proposed in the present invention includes a hydraulic loading control unit, a power source monitoring unit, a hydraulic cylinder motion monitoring unit, a real-time alarm unit, and a remote control monitoring terminal. The hydraulic loading control unit uses a hydraulic pump station as a power source and combines control elements such as a three-position four-way solenoid reversing valve, a relief valve, a check valve, and a proportional pressure reducing valve to precisely control the hydraulic cylinder. The proportional pressure reducing valve regulates the pressure to meet the pressure requirements of the lime shaft kiln under different operating conditions (i.e., it achieves dynamic adjustment of the output force to meet the lime shaft kiln's requirements for complex operating conditions such as sinusoidal loads). An accumulator is introduced at the outlet of the hydraulic pump station to buffer pressure pulsations, thereby reducing energy consumption and energy waste.

[0037] The power source monitoring unit monitors and analyzes the power source, and determines whether to generate a power source warning signal through analysis. That is, when the liquid level judgment symbol YP-1, the medium judgment symbol YP-2, or the pump body judgment symbol YP-3 is assigned, a power source warning signal is generated. When the power source warning signal is generated, it is sent to the real-time alarm unit. When the real-time alarm unit receives the power source warning signal, it triggers the alarm mechanism, generates corresponding alarm information, and transmits it to the remote control monitoring terminal;

[0038] The remote control monitoring terminal displays alarm information and issues early warnings, enabling comprehensive monitoring and accurate judgment of the power source's operational safety and timely early warning. This helps remind managers to quickly investigate and analyze the cause and take reasonable regulatory and improvement measures for the power source, significantly reducing the difficulty of supervision for managers.

[0039] It should be noted that the power source monitoring unit includes a tank level detection module, a working medium detection module, and a pump body operation detection module. Among them, the tank level detection module monitors the hydraulic oil level in the hydraulic pump station tank, collects the hydraulic oil level in the tank in real time, and compares the hydraulic oil level with the preset level threshold in real time;

[0040] When the liquid level is lower than the preset liquid level threshold, the hydraulic pump is prone to cavitation when sucking oil, which may cause a series of unsafe factors and failures such as abnormal operation. The liquid level judgment symbol YP-1 is assigned to provide information support for the analysis process of the power source monitoring unit.

[0041] In addition, the working medium detection module detects and comprehensively analyzes the hydraulic oil condition, and determines whether to assign the medium judgment symbol YP-2 through analysis, providing information support for the analysis process of the power source monitoring unit. The specific analysis process of the working medium detection module is as follows:

[0042] The hydraulic oil temperature is collected, and the difference between the temperature and the median of the preset suitable hydraulic oil temperature range is calculated and the absolute value is taken to obtain the hydraulic oil temperature risk value. The solid particle content and the bubble content in the hydraulic oil are collected and marked as the hydraulic oil particle content value and the hydraulic oil gas content value respectively;

[0043] The hydraulic oil temperature risk value QW, the hydraulic oil particle value GY, and the hydraulic oil gas value NP are numerically calculated using the formula TX=(rw1×QW+rw2×GY+rw3×NP) / 3 to obtain the hydraulic oil detection value TX, where rw1, rw2, and rw3 are preset weight coefficients with values ​​greater than zero. The larger the value of the hydraulic oil detection value TX, the worse the condition of the working medium in the power source.

[0044] The hydraulic oil detection value TX is numerically compared with the preset hydraulic oil detection threshold. If the hydraulic oil detection value TX exceeds the preset hydraulic oil detection threshold, it indicates that the current condition of the working medium in the power source is poor, which is not conducive to ensuring the safe and stable operation of the power source, and the medium judgment symbol YP-2 is assigned.

[0045] Furthermore, the pump operation detection module performs operation detection and analysis on the hydraulic pump of the hydraulic pump station. Through analysis, it determines whether to assign the pump judgment symbol YP-3, providing information support for the analysis process of the power source monitoring unit. The specific analysis process of the pump operation detection module is as follows:

[0046] The pressure value and flow value output by the hydraulic pump in the hydraulic pump station are collected and marked as pump pressure detection value and pump flow detection value respectively. The pump pressure detection value and pump flow detection value are numerically compared with the preset pump pressure detection value range and the preset pump flow detection value range respectively. If the pump pressure detection value or the pump flow detection value is not within the corresponding preset range, it indicates that the operating condition of the hydraulic pump is relatively abnormal, and the pump body is assigned the judgment symbol YP-3;

[0047] If the pump pressure detection value and the pump volume detection value are both within the corresponding preset ranges, the operating speed and the operating torque of the hydraulic pump are collected, and the deviation value of the operating speed compared to the set standard speed is marked as the pump speed deviation value, and the deviation value of the operating torque compared to the set standard torque is marked as the pump torque deviation value. In addition, the vibration amplitude value and the noise decibel value generated by the operation of the hydraulic pump are collected and marked as the pump motion characteristic value and the pump sound characteristic value respectively;

[0048] The pump speed deviation value ZX, pump torque deviation value WF, pump dynamic characteristic value HY, and pump sound characteristic value YL are numerically calculated using the formula SP=(tu×ZX+eq×WF+fy×HY+ng×YL) / 4, where tu, eq, fy, and ng are preset weight coefficients with values ​​greater than zero. The larger the value of the pump operation value SP, the worse the overall operating condition of the hydraulic pump.

[0049] The pump body operation value SP is numerically compared with the preset pump body operation threshold. If the pump body operation value SP exceeds the preset pump body operation threshold, it indicates that the operating condition of the hydraulic pump is generally abnormal, and the pump body judgment symbol YP-3 is assigned.

[0050] The hydraulic cylinder motion monitoring unit monitors and analyzes the motion state of the hydraulic cylinder piston rod, and determines whether to generate a hydraulic motion warning signal through analysis. When a hydraulic motion warning signal is generated, it is sent to the real-time alarm unit. When the real-time alarm unit receives the hydraulic motion warning signal, it triggers the alarm mechanism, generates corresponding alarm information, and transmits it to the remote control monitoring terminal;

[0051] The remote control monitoring terminal displays the alarm information and issues an early warning, which can effectively monitor the motion status of the hydraulic cylinder and provide an early warning of hydraulic cylinder anomalies, so as to prompt management personnel to quickly investigate and analyze the cause and take corresponding treatment measures for the hydraulic cylinder, further reducing the difficulty of management personnel's supervision. The specific analysis process of the hydraulic cylinder motion monitoring unit is as follows:

[0052] By installing a displacement sensor on the piston rod of the hydraulic cylinder, the displacement change of the piston rod is monitored, the displacement range of the piston rod is collected, and the displacement range of the piston rod is compared with the set standard range to obtain the upper and lower limit deviation values ​​of the displacement;

[0053] The upper limit deviation value and the lower limit deviation value of the displacement are numerically compared with the preset upper limit deviation threshold value and the preset lower limit deviation threshold value, respectively. If the upper limit deviation value or the lower limit deviation value of the displacement exceeds the corresponding preset threshold value, it indicates that the motion range of the hydraulic cylinder piston rod is not accurate and there is a large deviation, and a hydraulic motion warning signal is generated;

[0054] If the upper and lower displacement deviation values ​​do not exceed the corresponding preset thresholds, the motion speed curve of the hydraulic cylinder per unit time is obtained, and several detection points are marked on the motion speed curve, and the intervals between two adjacent detection points are the same;

[0055] The hydraulic cylinder speed wave value is obtained by calculating the variance of the speed of all detection points, and the hydraulic cylinder speed wave value is numerically compared with the preset hydraulic cylinder speed wave threshold. If the hydraulic cylinder speed wave value exceeds the preset hydraulic cylinder speed wave threshold, it indicates that the fluctuation of the hydraulic cylinder piston rod movement speed is large, that is, the movement is unstable, and a hydraulic movement warning signal is generated;

[0056] If the hydraulic cylinder speed wave value does not exceed the preset hydraulic cylinder speed wave threshold, the speeds of all detection points are averaged to obtain the hydraulic cylinder speed measurement value, the hydraulic cylinder speed measurement value is subtracted from the median of the preset hydraulic cylinder speed measurement value range and the absolute value is taken to obtain the hydraulic cylinder speed deviation value, and the proportion of the number of detection points whose speed is not within the preset hydraulic cylinder speed measurement value range is marked as the hydraulic cylinder speed deviation value, and the maximum deviation of the speed per unit time from the preset hydraulic cylinder speed measurement value range is marked as the hydraulic cylinder speed amplitude value;

[0057] The hydraulic cylinder risk coefficient LX is calculated by numerically calculating the hydraulic cylinder speed deviation value HF, the hydraulic cylinder speed difference value ZM, and the hydraulic cylinder speed amplitude value YF using the formula LX=b2×ZM+(b1×HF+b3×YF) / 2. Here, b1, b2, and b3 are preset weight coefficients, and b2>b1>b3>0. Furthermore, the larger the value of the hydraulic cylinder risk coefficient LX, the worse the overall operating performance of the hydraulic cylinder.

[0058] The hydraulic cylinder risk coefficient LX is numerically compared with a preset hydraulic cylinder risk coefficient threshold. If the hydraulic cylinder risk coefficient LX exceeds the preset hydraulic cylinder risk coefficient threshold, it indicates that the overall operating performance of the hydraulic cylinder is poor, and a hydraulic motion warning signal is generated.

[0059] Example 2: Figure 2 As shown, the difference between this embodiment and the first embodiment is that the real-time alarm unit is communicatively connected to the control element evaluation unit. The control element evaluation unit performs performance evaluation and analysis on the control elements in the hydraulic loading control unit, determines whether to generate a control distress signal through the analysis, and sends the control distress signal to the real-time alarm unit when it is generated.

[0060] When the real-time alarm unit receives a control risk signal, it triggers the alarm mechanism, generates corresponding alarm information, and transmits it to the remote control monitoring terminal. The remote control monitoring terminal displays the alarm information and issues a warning to remind management personnel to check and adjust the corresponding control components and strengthen the operation supervision of the control components, thereby reducing subsequent control risks. The high degree of intelligence further reduces the supervision difficulty of management personnel. The specific analysis process of the control component evaluation unit is as follows:

[0061] All control elements in the hydraulic loading control unit are obtained, mainly including the three-position four-way solenoid reversing valve, the relief valve, the check valve, and the proportional pressure reducing valve. The corresponding control element is marked as i, where i is a natural number greater than 1. The current operating status information of the control element i is collected, and based on the operating status information, whether the current operating status of the control element i meets the requirements is determined in real time. If the corresponding status does not meet the requirements (for example, it is not open when it should be open, it is not closed when it should be closed, or the opening degree is inconsistent with the required opening degree, etc.), the control element i is determined to be in a control abnormality state.

[0062] The number of times that control element i is judged to be in a control abnormality state during the detection period is obtained and marked as the control frequency difference value. When control element i receives the corresponding control instruction, the delay time for its response (i.e., the interval between the time of response and the time of receiving the instruction) is collected and marked as the instruction execution delay time. The average of all instruction execution delay time within the detection period is calculated to obtain the instruction execution effectiveness value. The proportion of instruction execution delay time exceeding the corresponding preset instruction execution delay time threshold during the detection period is marked as the instruction execution risk value.

[0063] The component alarm coefficient HNi is calculated by numerically calculating the control frequency difference value KFi, the instruction execution effectiveness value ZYi, and the instruction execution risk value PWi using the formula HNi=up×KFi+te×ZYi+sq×PWi. Here, up, te, and sq are preset weight coefficients with values ​​greater than zero. A larger value of the component alarm coefficient HNi indicates worse operating performance of the control component i during the detection period.

[0064] The component alarm coefficient HNi is numerically compared with the corresponding preset component alarm coefficient threshold. If the component alarm coefficient HNi exceeds the corresponding preset component alarm coefficient threshold, it indicates that the operating performance of the control element i during the detection period is poor, and the control element i is marked as a poor control element; if a poor control element exists, it indicates that the operating control risk during the detection period is relatively high, and a control risk signal is generated.

[0065] Furthermore, if there is no control-defective element, the element alarm coefficient of the control element i is compared with the corresponding preset element alarm coefficient threshold to obtain the element alarm value, the element alarm values ​​of all control elements are averaged to obtain the control evaluation coefficient, and the control evaluation coefficient is numerically compared with the preset control evaluation coefficient threshold. If the control evaluation coefficient exceeds the preset control evaluation coefficient threshold, it indicates that the overall operation control risk of the detection period is large, and a control risk signal is generated.

[0066] The working principle of the present invention is as follows: when in use, a hydraulic pump station is adopted as a power source through a hydraulic loading control unit, and the hydraulic cylinder is precisely controlled in combination with control elements such as a three-position four-way electromagnetic reversing valve, a relief valve, a one-way valve and a proportional pressure reducing valve. The power source monitoring unit monitors and analyzes the power source to determine whether a power source warning signal is generated. The hydraulic cylinder motion monitoring unit monitors and analyzes the motion state of the hydraulic cylinder piston rod to determine whether a hydraulic motion warning signal is generated. The control element evaluation unit performs performance evaluation and analysis on the control elements in the hydraulic loading control unit to determine whether a control hazard signal is generated. When a power source warning signal, a hydraulic motion warning signal or a control hazard signal is generated, the remote control monitoring terminal issues a warning to remind management personnel to quickly conduct cause investigation and analysis and make targeted improvement measures, thereby significantly reducing the difficulty of management personnel's supervision and realizing hydraulic monitoring and control of the lime shaft kiln with a high degree of intelligence.

[0067] The above formulas are all dimensionless and calculated by taking their numerical values. The formula is a formula for the latest real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions. The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made based on the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can well understand and use the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. The hydraulic monitoring and control system for environmentally friendly lime shaft kiln is characterized by: It includes a hydraulic loading control unit, a power source monitoring unit, a hydraulic cylinder motion monitoring unit, a real-time alarm unit, and a remote control monitoring terminal. The hydraulic loading control unit uses a hydraulic pump station as its power source. Combined with control components including a three-position, four-way solenoid directional valve, a relief valve, a check valve, and a proportional pressure reducing valve, it precisely controls the hydraulic cylinder and adjusts the pressure through the proportional pressure reducing valve to meet the pressure requirements of the lime shaft kiln under different operating conditions. An accumulator is introduced at the outlet of the hydraulic pump station to buffer pressure pulsations and reduce energy consumption. The power source monitoring unit monitors and analyzes the power source to determine whether a power source warning signal is generated. The hydraulic cylinder motion monitoring unit monitors and analyzes the motion state of the hydraulic cylinder piston rod to determine whether a hydraulic motion warning signal is generated. The real-time alarm unit triggers the alarm mechanism upon receiving a power source warning signal or a hydraulic motion warning signal, generates corresponding alarm information, and transmits it to the remote control monitoring terminal, which displays the alarm information and issues a warning. The specific analysis process of the hydraulic cylinder motion monitoring unit is as follows: by installing a displacement sensor on the hydraulic cylinder piston rod, monitoring the displacement change of the piston rod, collecting the displacement range of the piston rod, comparing the displacement range of the piston rod with the set standard range, and obtaining the upper and lower displacement deviation values ​​based on this, and numerically comparing the upper and lower displacement deviation values ​​with the preset upper and lower displacement deviation thresholds, respectively. If the upper or lower displacement deviation value exceeds the corresponding preset threshold, a hydraulic motion warning signal is generated; If the upper and lower displacement deviation values ​​do not exceed the corresponding preset thresholds, the motion speed curve of the hydraulic cylinder per unit time is obtained, and several detection points are marked on the motion speed curve, and the intervals between two adjacent detection points are the same; the hydraulic cylinder speed wave value is obtained by calculating the variance of the speeds of all detection points, and the hydraulic cylinder speed wave value is numerically compared with the preset hydraulic cylinder speed wave threshold. If the hydraulic cylinder speed wave value exceeds the preset hydraulic cylinder speed wave threshold, a hydraulic motion warning signal is generated; If the hydraulic cylinder speed wave value does not exceed the preset hydraulic cylinder speed wave threshold, the speeds of all detection points are averaged to obtain the hydraulic cylinder speed measurement value, the hydraulic cylinder speed measurement value is subtracted from the median of the preset hydraulic cylinder speed measurement value range and the absolute value is taken to obtain the hydraulic cylinder speed deviation value, and the proportion of the number of detection points whose speed is not within the preset hydraulic cylinder speed measurement value range is marked as the hydraulic cylinder speed deviation value, and the maximum deviation of the speed per unit time from the preset hydraulic cylinder speed measurement value range is marked as the hydraulic cylinder speed amplitude value; The hydraulic cylinder risk coefficient is obtained by numerically calculating the hydraulic cylinder speed deviation value, the hydraulic cylinder speed difference value and the hydraulic cylinder speed amplitude value, and the hydraulic cylinder risk coefficient is numerically compared with the preset hydraulic cylinder risk coefficient threshold value. If the hydraulic cylinder risk coefficient exceeds the preset hydraulic cylinder risk coefficient threshold value, a hydraulic movement warning signal is generated.

2. The hydraulic monitoring and control system for an environmentally friendly lime shaft kiln according to claim 1, characterized in that: The power source monitoring unit includes a tank level detection module, a working medium detection module, and a pump body operation detection module. The tank level detection module monitors the hydraulic oil level in the hydraulic pump station tank. When the level is lower than the preset level threshold, a level judgment symbol YP-1 is assigned. The working medium detection module detects and comprehensively analyzes the hydraulic oil condition, and determines whether to assign the medium judgment symbol YP-2 through analysis; the pump body operation detection module performs operation detection and analysis on the hydraulic pump of the hydraulic pump station, and determines whether to assign the pump body judgment symbol YP-3 through analysis; a power source warning signal is generated when the liquid level judgment symbol YP-1, the medium judgment symbol YP-2 or the pump body judgment symbol YP-3 is assigned.

3. The hydraulic monitoring and control system for an environmentally friendly lime shaft kiln according to claim 2, characterized in that: The specific analysis process of the working medium detection module is as follows: the hydraulic oil detection value is obtained by numerically calculating the hydraulic oil temperature risk value, the hydraulic oil particle value and the hydraulic oil gas value. If the hydraulic oil detection value exceeds the preset hydraulic oil detection threshold, the medium judgment symbol YP-2 is assigned.

4. The hydraulic monitoring and control system for an environmentally friendly lime shaft kiln according to claim 2, characterized in that: The specific analysis process of the pump operation detection module is as follows: If the pump pressure detection value or the pump volume detection value is not within the corresponding preset range, the pump body judgment symbol YP-3 is assigned; if the pump pressure detection value and the pump volume detection value are both within the corresponding preset range, the pump body operation value is obtained by numerically calculating the pump speed deviation value, pump torque deviation value, pump motion characteristic value and pump sound characteristic value. If the pump body operation value exceeds the preset pump body operation threshold, the pump body judgment symbol YP-3 is assigned.

5. The hydraulic monitoring and control system for an environmentally friendly lime shaft kiln according to claim 1, characterized in that: The real-time alarm unit is communicatively connected to the control element evaluation unit. The control element evaluation unit performs performance evaluation and analysis on the control elements in the hydraulic loading control unit, and determines whether to generate a control hazard signal through analysis. When the control hazard signal is generated, it is sent to the real-time alarm unit. When the real-time alarm unit receives the control hazard signal, the alarm mechanism is triggered, corresponding alarm information is generated and transmitted to the remote control monitoring terminal, which displays the alarm information and issues an early warning.

6. The hydraulic monitoring and control system for an environmentally friendly lime shaft kiln according to claim 5, characterized in that: The specific analysis process of the control element evaluation unit is as follows: All control elements in the hydraulic loading control unit are obtained, and the corresponding control element is marked as i, where i is a natural number greater than 1; the element alarm coefficient is obtained by numerically calculating the control frequency difference value, the instruction execution effectiveness value and the instruction execution risk value. If the element alarm coefficient exceeds the corresponding preset element alarm coefficient threshold, the control element i is marked as a poor control element; if a poor control element exists, a control risk signal is generated.

7. The hydraulic monitoring and control system for an environmentally friendly lime shaft kiln according to claim 6, characterized in that: If there is no control failure element, the element warning values ​​of all control elements are averaged to obtain a control evaluation coefficient. If the control evaluation coefficient exceeds a preset control evaluation coefficient threshold, a control danger signal is generated.

Images