A test system capable of verifying boiler safety interlocking function

Abstract

The present invention discloses a test system capable of verifying the safety interlocking function of a boiler, and relates to the technical field of safety verification. The present invention comprises: a boiler water level safety analysis module, a boiler pressure safety analysis module, a boiler startup safety analysis module, a boiler safety device optimization module and a local database. The present invention judges whether the water level safety interlocking function, the air pressure safety interlocking function and the startup safety interlocking function are normal by performing a water level test, an air pressure test and a startup test on the boiler. For abnormal functions, the person in charge of boiler maintenance is notified to perform maintenance, thereby timely maintaining the safety interlocking function of the boiler and ensuring that the safety interlocking function of the boiler can operate normally. For normal functions, the corresponding adjustment value of the normal function is analyzed to prevent the function from responding in a timely manner due to slow response of the equipment, thereby reducing damage to the boiler.

Description

Technical Field

[0001] The present invention relates to the technical field of safety verification, and in particular to a test system capable of verifying the safety interlocking function of a boiler. Background Art

[0002] Industrial boiler safety protection devices are installed on boilers to provide alarms and safety interlock protection for dangerous working conditions when the boiler is running, so as to ensure the safe operation of the boiler, make up for the shortcomings of boiler operators' misoperation and loss of control, and prevent accidents caused by boiler overpressure, overtemperature, water shortage, etc. However, at present, a considerable number of industrial boiler users arbitrarily dismantle and short-circuit safety protection devices. In addition, the boiler safety protection devices degrade and fail as the operating time increases, making it impossible for the boiler safety protection devices to perform their functions normally. Therefore, it is very necessary to verify whether the boiler safety protection devices can be used normally.

[0003] Existing technology, such as the steam boiler safety interlock detection device and method disclosed in patent application publication number CN115407741A, includes a control unit, an intermediate relay, a microampere signal transmission unit, and an input / output unit. This device can inspect the steam boiler's automation instrument signal chain and PLC analog channels, improving self-test efficiency. It can also check the ignition, main flame, and flameout safety times to complete the steam boiler's self-test. It can also simulate ignition of the steam boiler's PLC, performing program trial and error by interfering with various signals, thereby improving the boiler's operating efficiency.

[0004] Prior art, such as the invention patent application CN116104982A, discloses a system and method for mandatory periodic discharge testing of pressure boiler safety valves. The system includes one or more safety valves installed on the drum of a pressure boiler. The system includes a pressure sensor for detecting pressure within the drum; a first sensor for detecting whether the safety valve is open; a second sensor for detecting whether medium is being discharged from the relief port of the safety valve; and a control cabinet for transmitting corresponding discharge test instructions and performing interactive operations based on the detection data from the pressure sensor, each first sensor, and each second sensor. This invention effectively implements daily boiler safety management, standardizes personnel operations, and reduces boiler safety accidents.

[0005] It can be seen from the above scheme that the current boiler safety interlock function detection system usually only collects and adjusts the temperature environment inside the boiler when the boiler is running, and lacks detection of the boiler's water level safety connection function and the start-up safety connection function. On the one hand, when the boiler's water supply is insufficient or excessive, and when the water level safety connection function fails, it will endanger the boiler and cause damage to the boiler. On the other hand, during the startup process, due to slow line response or employee operating errors, the boiler fails to meet the startup standards. At this time, if it is started and the startup safety connection function fails, it will cause damage to the boiler and even pose a threat to employees. Summary of the Invention

[0006] The purpose of the present invention is to provide a test system capable of verifying the safety interlocking function of a boiler, thereby solving the problems existing in the background technology.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a test system capable of verifying the boiler safety interlocking function, including: a boiler water level safety analysis module, used to conduct a boiler water level experiment to determine whether the boiler water level safety interlocking function can be used normally. If it can be used normally, the triggering time point of the high water level safety interlocking function of the boiler and the water level value of each high water level monitoring time point are obtained, and the triggering time point of the low water level safety interlocking function of the boiler and the water level value of each low water level monitoring time point are obtained to analyze the response delay threat coefficient of the boiler water level safety interlocking function.

[0008] The boiler pressure safety analysis module is used to conduct boiler air pressure experiments to determine whether the boiler air pressure safety interlock function can be used normally. If it can be used normally, the triggering time point of the boiler's high-pressure safety interlock function and the triggering time point of the low-pressure safety interlock function are obtained, and the air pressure values ​​of each high-pressure test monitoring time point and each low-pressure test monitoring time point of the boiler are obtained to analyze the response delay threat coefficient of the boiler's air pressure safety interlock function.

[0009] The boiler startup safety analysis module is used to conduct boiler startup experiments, determine whether the various startup safety interlocking functions of the boiler can be used normally, screen the normal startup safety interlocking functions of the boiler, obtain the triggering time points of the normal startup safety interlocking functions of the boiler, and analyze the response delay threat coefficient of the normal startup safety interlocking functions of the boiler.

[0010] The boiler safety device optimization module is used to determine whether the boiler's water level safety interlock function can adjust the water level alarm value. If so, it evaluates the boiler's alarm low water level adjustment value and alarm high water level adjustment value. It determines whether the boiler's air pressure safety interlock function can adjust the air pressure alarm value. If so, it analyzes the boiler's alarm low pressure adjustment value and alarm high pressure adjustment value. It determines whether the boiler's normal start-up safety interlock function can adjust the dangerous response time value. If so, it calculates the dangerous response time adjustment value of the boiler's normal start-up safety interlock function, screens the boiler's various functional abnormal safety interlock devices, and sends them to the boiler maintenance person in charge for repair.

[0011] Preferably, the boiler water level test is performed to determine whether the boiler water level safety interlocking function can be used normally, and the specific method is: obtaining the boiler test water level interval from the local database, and extracting the maximum and minimum values ​​of the boiler test water level interval.

[0012] Start the boiler and add the boiler water level value to the maximum value of the boiler experimental water level interval through the water inlet. If the boiler high water level safety interlock function is not started or the boiler is not shut down, it is judged that the boiler water level safety interlock function cannot be used normally. If the boiler high water level safety interlock function is started and the boiler is shut down, the boiler water level value is discharged to the minimum value of the boiler experimental water level interval and the boiler is started. If the boiler low water level safety interlock function is not started or the boiler is not shut down, it is judged that the boiler water level safety interlock function cannot be used normally. If the boiler low water level safety interlock function is started and the boiler is shut down, it is judged that the boiler water level safety interlock function can be used normally, and the triggering time point of the boiler high water level safety interlock function and the water level value of each high water level monitoring time point are obtained, and the triggering time point of the boiler low water level safety interlock function and the water level value of each low water level monitoring time point are obtained.

[0013] Preferably, the specific analysis method for analyzing the sluggish response threat coefficient of the boiler's water level safety interlocking function is as follows: obtaining the boiler's suitable water level value range from the local database, and extracting the boiler's maximum suitable water level value A and minimum suitable water level value a; mapping the high water level monitoring time point at which the boiler reaches the maximum suitable water level value based on the water level values ​​at each high water level monitoring time point of the boiler; and mapping the low water level monitoring time point at which the boiler reaches the minimum suitable water level value based on the water level values ​​at each low water level monitoring time point of the boiler.

[0014] Obtain the start time of the boiler's high water level test and the start time of the low water level test from the local database, calculate the time B required for the boiler to reach the maximum suitable water level value, and calculate the triggering time D of the boiler's high water level safety interlocking function based on the triggering time point of the boiler's high water level safety interlocking function.

[0015] According to the triggering time point of the high water level safety interlocking function of the boiler and the water level values ​​at each high water level monitoring time point, the water level value C at the triggering time point of the high water level safety interlocking function of the boiler is extracted.

[0016] Calculation of the high water level response delay threat coefficient of the boiler's water level safety interlock function Where e represents a natural constant.

[0017] Based on the triggering time point of the boiler's low water level safety interlocking function and the water level values ​​at each low water level monitoring time point, the time b required for the boiler to reach the minimum suitable water level value is calculated in the same way, and the triggering time d for the boiler to trigger the low water level safety interlocking function is calculated. The water level value c at the triggering time point of the boiler's low water level safety interlocking function is extracted.

[0018] Calculation of the low water level response delay threat coefficient of the boiler's water level safety interlock function

[0019]

[0020] Analyze the water level safety interlock function of the boiler and its slow response threat coefficient ε=β+δ.

[0021] Preferably, the boiler pressure test is performed to determine whether the boiler pressure safety interlock function can be used normally, and the specific method is: obtaining the experimental pressure range and experimental power value from the local database, and extracting the maximum and minimum values ​​of the experimental pressure range.

[0022] After the boiler is completely exhausted, start the boiler and close all the exhaust ports of the boiler, so that the boiler's furnace pressure value is gradually increased to the high value of the experimental pressure. If during this process, the boiler's furnace pressure value increases to the high value of the boiler's experimental pressure and the boiler's pressure safety interlock function is not activated, it is determined that the boiler's pressure safety interlock function cannot be used normally. If the boiler's pressure safety interlock function is activated and the boiler is shut down, the boiler's power is adjusted to the experimental power value, and all the exhaust ports of the boiler are opened and started, so that the boiler's furnace pressure value is gradually reduced to the low value of the experimental pressure. If during this process, the boiler's pressure safety interlock function is activated and the boiler is shut down, it is determined that the boiler's pressure safety interlock function can be used normally. If the boiler's furnace pressure value increases to the low value of the boiler's experimental pressure and the boiler's pressure safety interlock function is still not activated, it is determined that the boiler's pressure safety interlock function cannot be used normally, and the triggering time point of the boiler's high-pressure safety interlock function and the triggering time point of the low-pressure safety interlock function of the boiler are obtained, and the pressure values ​​of each high-pressure experimental monitoring time point and the pressure values ​​of each low-pressure experimental monitoring time point of the boiler are obtained.

[0023] Preferably, the specific analysis method for analyzing the sluggish response threat coefficient of the boiler's air pressure safety interlocking function is as follows: obtaining the boiler's suitable air pressure value range, the start time point of the high air pressure experiment, and the start time point of the low air pressure experiment from the local database, and extracting the boiler's maximum suitable air pressure value F and minimum suitable air pressure value f.

[0024] Based on the method of analyzing the response delay threat coefficient of the boiler's water level safety interlock function, the time G required for the boiler to reach the minimum suitable air pressure value is calculated, the triggering time H of the boiler triggering the low-pressure safety interlock function is calculated, and the air pressure value K at the triggering time point of the boiler's low-pressure safety interlock function is extracted. The time g required for the boiler to reach the maximum suitable air pressure value is calculated, the triggering time h of the boiler triggering the high-pressure safety interlock function is calculated, and the air pressure value k at the triggering time point of the boiler's high-pressure safety interlock function is extracted.

[0025] Calculation of the high-pressure response delay threat factor of the boiler's water level safety interlock function

[0026]

[0027] Calculation of the low-pressure response delay threat factor of the boiler's water level safety interlock function

[0028]

[0029] Analyze the slow response threat factor of the boiler's gas pressure safety interlock function

[0030] Preferably, the boiler startup experiment is performed to determine whether the various startup safety interlocking functions of the boiler can be used normally. The specific method is: obtaining the experimental startup water level value, experimental fuel supply amount, normal startup voltage value, experimental voltage value and voltage reduction rate from the local database.

[0031] Adjust the boiler water level to the experimental start-up water level value and start the boiler. If the boiler's water level start-up safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's water level start-up safety interlock function cannot be used normally. If the boiler's water level start-up safety interlock function is activated and the boiler is shut down, it is determined that the boiler's water level start-up safety interlock function can be used normally.

[0032] Adjust the boiler's fuel supply to the experimental fuel supply and start the boiler. If the boiler's fuel start-up safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's fuel start-up safety interlock function cannot be used normally. If the boiler's fuel start-up safety interlock function is activated and the boiler is shut down, it is determined that the boiler's fuel start-up safety interlock function can be used normally.

[0033] Adjust the boiler's supply voltage to the normal starting voltage value and start the boiler. During the startup process, gradually reduce the boiler's supply voltage to the experimental voltage value according to the voltage reduction rate. If, during this process, the boiler's voltage-start safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's voltage-start safety interlock function cannot be used normally. If the boiler's voltage-start safety interlock function is activated and the boiler is shut down, it is determined that the boiler's voltage-start safety interlock function can be used normally.

[0034] Preferably, the analysis of the slow response threat coefficient of each normal start safety interlock function of the boiler is carried out by obtaining the starting experiment time point of each normal start safety interlock function of the boiler, the predefined safety triggering time length l from the local database, and the time interval of each normal start safety interlock function of the boiler. n , and according to the triggering time point of each normal start safety interlocking function of the boiler, calculate the triggering time x of each normal start safety interlocking function of the boiler n , where n represents the number of each normal startup safety interlocking function, n=1,2,...,m, and m is a positive integer greater than 2.

[0035] Analyze the response delay threat coefficient of each normal start-up safety interlock function of the boiler

[0036]

[0037] Preferably, the specific evaluation method for evaluating the alarm low water level adjustment value and the alarm high water level adjustment value of the boiler is: obtaining the alarm high water level adjustment value corresponding to each high water level adjustment coefficient interval, the alarm low water level adjustment value corresponding to each low water level adjustment coefficient interval, the boiler's last high water level response delay threat coefficient p, and the boiler's last low water level response delay threat coefficient q from the local database.

[0038] Calculate the high water level adjustment coefficient of the boiler's water level safety interlock function based on the high water level response delay threat coefficient β of the boiler's water level safety interlock function And map to obtain the boiler's alarm high water level adjustment value.

[0039] Calculate the low water level adjustment coefficient of the boiler's water level safety interlock function based on the low water level response delay threat coefficient δ of the boiler's water level safety interlock function. And map to obtain the boiler's alarm low water level adjustment value.

[0040] Preferably, the alarm low-pressure adjustment value and the alarm high-pressure adjustment value of the analysis boiler are analyzed by a specific analysis method as follows: obtaining the alarm high-pressure adjustment value corresponding to each high-pressure adjustment coefficient interval, the alarm low-pressure adjustment value corresponding to each low-pressure adjustment coefficient interval, the boiler's last high-pressure response sluggish threat coefficient u, and the boiler's last low-pressure response sluggish threat coefficient w from the local database.

[0041] Calculate the high pressure adjustment coefficient of the boiler's gas pressure safety interlock function based on the high pressure response delay threat coefficient φ of the boiler's gas pressure safety interlock function. And map to obtain the boiler's alarm high pressure adjustment value.

[0042] Low pressure response delay threat factor based on boiler gas pressure safety interlock function Calculate the low pressure adjustment coefficient of the boiler's gas pressure safety interlock function And map to obtain the boiler's alarm low pressure adjustment value.

[0043] Preferably, the calculation method of the dangerous response time adjustment value of each normal startup safety interlocking function of the boiler is: obtaining the dangerous response time adjustment value corresponding to each response delay threat coefficient interval of each normal startup safety interlocking function from the local database.

[0044] According to the response delay threat coefficient of each normal startup safety interlocking function of the boiler, the dangerous response time adjustment value of each normal startup safety interlocking function of the boiler is mapped and obtained.

[0045] The beneficial effects of the present invention are: (1) The boiler water level safety analysis module of the present invention performs a boiler water level test to prevent the boiler from being damaged due to a slow response or inability to use the water level safety interlocking function.

[0046] (2) The boiler pressure safety analysis module of the present invention performs a boiler air pressure test to prevent the boiler from being damaged due to a slow response or inability to use the air pressure safety interlock function.

[0047] (3) The boiler startup safety analysis module of the present invention performs a boiler startup experiment to prevent the boiler from being damaged due to the slow response or inability of various startup safety interlocking functions.

[0048] (4) The boiler safety device optimization module of the present invention, on the one hand, screens the safety interlocking devices of various functions of the boiler and notifies the boiler maintenance person in charge to carry out maintenance, thereby ensuring that the various safety interlocking functions of the boiler can operate normally. On the other hand, by adjusting the alarm values ​​of various safety interlocking functions of the boiler, the problem of slow response caused by the aging of various safety interlocking functions of the boiler is alleviated, thereby giving early warnings, reducing damage to the boiler, and extending the service life of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0050] Figure 1 Schematic diagram of the system module of the present invention. DETAILED DESCRIPTION

[0051] 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.

[0052] Reference Figure 1 As shown, the present invention provides a test system capable of verifying the boiler safety interlocking function, comprising: a boiler water level safety analysis module, a boiler pressure safety analysis module, a boiler startup safety analysis module, a boiler safety device optimization module and a local database.

[0053] It should be noted that the boiler water level safety analysis module is connected to the boiler safety device optimization module, the boiler pressure safety analysis module is connected to the boiler safety device optimization module, the boiler startup safety analysis module is connected to the boiler safety device optimization module, and the local database is connected to the boiler water level safety analysis module, the boiler pressure safety analysis module, the boiler startup safety analysis module, and the boiler safety device optimization module.

[0054] It should also be noted that the local database is used to store the boiler experimental water level range, the boiler's suitable water level value range, the start time of the boiler's high water level experiment, the start time of the low water level experiment, the experimental air pressure range, the experimental power value, the boiler's suitable air pressure value range, the start time of the high pressure experiment, the start time of the low pressure experiment, the experimental start water level value, the experimental fuel supply amount, the normal start voltage value, the experimental voltage value and the voltage reduction rate, the start time of each normal start safety interlocking function of the boiler, the predefined safety trigger time, the response delay of the water level safety interlocking function Blunt threat coefficient threshold, alarm high water level adjustment value corresponding to each high water level adjustment coefficient interval, alarm low water level adjustment value corresponding to each low water level adjustment coefficient interval, boiler's last high water level response slow threat coefficient, boiler's last low water level response slow threat coefficient, alarm high pressure adjustment value corresponding to each high pressure adjustment coefficient interval, alarm low pressure adjustment value corresponding to each low pressure adjustment coefficient interval, boiler's last high pressure response slow threat coefficient, boiler's last low pressure response slow threat coefficient, and dangerous response time adjustment value corresponding to each response slow threat coefficient interval of each normally started safety interlocking function.

[0055] The boiler water level safety analysis module is used to conduct boiler water level experiments to determine whether the boiler water level safety interlocking function can be used normally. If it can be used normally, the triggering time point of the boiler's high water level safety interlocking function and the water level value at each high water level monitoring time point are obtained, and the triggering time point of the boiler's low water level safety interlocking function and the water level value at each low water level monitoring time point are obtained to analyze the response delay threat coefficient of the boiler's water level safety interlocking function.

[0056] In a specific embodiment of the present invention, the boiler water level test is performed to determine whether the boiler water level safety interlocking function can be used normally. The specific method is: obtain the boiler test water level interval from the local database, and extract the maximum and minimum values ​​of the boiler test water level interval.

[0057] Start the boiler and add the boiler water level value to the maximum value of the boiler experimental water level interval through the water inlet. If the boiler high water level safety interlock function is not started or the boiler is not shut down, it is judged that the boiler water level safety interlock function cannot be used normally. If the boiler high water level safety interlock function is started and the boiler is shut down, the boiler water level value is discharged to the minimum value of the boiler experimental water level interval and the boiler is started. If the boiler low water level safety interlock function is not started or the boiler is not shut down, it is judged that the boiler water level safety interlock function cannot be used normally. If the boiler low water level safety interlock function is started and the boiler is shut down, it is judged that the boiler water level safety interlock function can be used normally, and the triggering time point of the boiler high water level safety interlock function and the water level value of each high water level monitoring time point are obtained, and the triggering time point of the boiler low water level safety interlock function and the water level value of each low water level monitoring time point are obtained.

[0058] In a specific embodiment of the present invention, the response delay threat coefficient of the water level safety interlocking function of the boiler is analyzed, and its specific analysis method is: obtaining the suitable water level value range of the boiler from the local database, and extracting the maximum suitable water level value A and the minimum suitable water level value a of the boiler, according to the water level value of each high water level monitoring time point of the boiler, mapping to obtain the high water level monitoring time point when the boiler reaches the maximum suitable water level value, according to the water level value of each low water level monitoring time point of the boiler, mapping to obtain the low water level monitoring time point when the boiler reaches the minimum suitable water level value.

[0059] Obtain the start time of the boiler's high water level test and the start time of the low water level test from the local database, calculate the time B required for the boiler to reach the maximum suitable water level value, and calculate the triggering time D of the boiler's high water level safety interlocking function based on the triggering time point of the boiler's high water level safety interlocking function.

[0060] According to the triggering time point of the high water level safety interlocking function of the boiler and the water level values ​​at each high water level monitoring time point, the water level value C at the triggering time point of the high water level safety interlocking function of the boiler is extracted.

[0061] Calculation of the high water level response delay threat coefficient of the boiler's water level safety interlock function Where e represents a natural constant.

[0062] Based on the triggering time point of the boiler's low water level safety interlocking function and the water level values ​​at each low water level monitoring time point, the time b required for the boiler to reach the minimum suitable water level value is calculated in the same way, and the triggering time d for the boiler to trigger the low water level safety interlocking function is calculated. The water level value c at the triggering time point of the boiler's low water level safety interlocking function is extracted.

[0063] Calculation of the low water level response delay threat coefficient of the boiler's water level safety interlock function

[0064]

[0065] Analyze the water level safety interlock function of the boiler and its slow response threat coefficient ε=β+δ.

[0066] It should be noted that the starting time point of the high water level test and the starting time point of the low water level test of the boiler are set by the employees.

[0067] The boiler water level safety analysis module of the present invention performs a boiler water level test to prevent the boiler from being damaged due to a slow response or inability to use the water level safety interlocking function.

[0068] The boiler pressure safety analysis module is used to conduct boiler air pressure tests to determine whether the boiler air pressure safety interlock function can be used normally. If it can be used normally, the triggering time point of the boiler's high-pressure safety interlock function and the triggering time point of the low-pressure safety interlock function are obtained, and the air pressure values ​​of each high-pressure test monitoring time point and each low-pressure test monitoring time point of the boiler are obtained to analyze the response delay threat coefficient of the boiler's air pressure safety interlock function.

[0069] In a specific embodiment of the present invention, the boiler air pressure experiment is conducted to determine whether the boiler air pressure safety interlock function can be used normally. The specific method is: obtain the experimental air pressure range and experimental power value from the local database, and extract the maximum and minimum values ​​of the experimental air pressure range.

[0070] After the boiler is completely exhausted, start the boiler and close all the exhaust ports of the boiler, so that the boiler's furnace pressure value is gradually increased to the high value of the experimental pressure. If during this process, the boiler's furnace pressure value increases to the high value of the boiler's experimental pressure and the boiler's pressure safety interlock function is not activated, it is determined that the boiler's pressure safety interlock function cannot be used normally. If the boiler's pressure safety interlock function is activated and the boiler is shut down, the boiler's power is adjusted to the experimental power value, and all the exhaust ports of the boiler are opened and started, so that the boiler's furnace pressure value is gradually reduced to the low value of the experimental pressure. If during this process, the boiler's pressure safety interlock function is activated and the boiler is shut down, it is determined that the boiler's pressure safety interlock function can be used normally. If the boiler's furnace pressure value increases to the low value of the boiler's experimental pressure and the boiler's pressure safety interlock function is still not activated, it is determined that the boiler's pressure safety interlock function cannot be used normally, and the triggering time point of the boiler's high-pressure safety interlock function and the triggering time point of the low-pressure safety interlock function of the boiler are obtained, and the pressure values ​​of each high-pressure experimental monitoring time point and the pressure values ​​of each low-pressure experimental monitoring time point of the boiler are obtained.

[0071] In a specific embodiment of the present invention, the response delay threat coefficient of the boiler's air pressure safety interlocking function is analyzed by a specific analysis method: obtaining the boiler's suitable air pressure value range, the start time point of the high air pressure experiment, and the start time point of the low air pressure experiment from the local database, and extracting the boiler's maximum suitable air pressure value F and minimum suitable air pressure value f.

[0072] Based on the method of analyzing the response delay threat coefficient of the boiler's water level safety interlock function, the time G required for the boiler to reach the minimum suitable air pressure value is calculated, the triggering time H of the boiler triggering the low-pressure safety interlock function is calculated, and the air pressure value K at the triggering time point of the boiler's low-pressure safety interlock function is extracted. The time g required for the boiler to reach the maximum suitable air pressure value is calculated, the triggering time h of the boiler triggering the high-pressure safety interlock function is calculated, and the air pressure value k at the triggering time point of the boiler's high-pressure safety interlock function is extracted.

[0073] Calculation of the high-pressure response delay threat factor of the boiler's water level safety interlock function

[0074]

[0075] Calculation of the low-pressure response delay threat factor of the boiler's water level safety interlock function

[0076] Analyze the slow response threat factor of the boiler's gas pressure safety interlock function

[0077] It should be noted that the start time of the high-pressure test and the start time of the low-pressure test of the boiler are set by the employees.

[0078] The boiler pressure safety analysis module of the present invention performs a boiler air pressure test to prevent the boiler from being damaged due to a slow response or inability to use the air pressure safety interlock function.

[0079] The boiler startup safety analysis module is used to conduct boiler startup experiments, determine whether the various startup safety interlocking functions of the boiler can be used normally, screen the normal startup safety interlocking functions of the boiler, obtain the triggering time points of the normal startup safety interlocking functions of the boiler, and analyze the response delay threat coefficient of the normal startup safety interlocking functions of the boiler.

[0080] In a specific embodiment of the present invention, the boiler startup experiment is conducted to determine whether the various startup safety interlocking functions of the boiler can be used normally. The specific method is: obtaining the experimental startup water level value, experimental fuel supply amount, normal startup voltage value, experimental voltage value and voltage reduction rate from the local database.

[0081] Adjust the boiler water level to the experimental start-up water level value and start the boiler. If the boiler's water level start-up safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's water level start-up safety interlock function cannot be used normally. If the boiler's water level start-up safety interlock function is activated and the boiler is shut down, it is determined that the boiler's water level start-up safety interlock function can be used normally.

[0082] Adjust the boiler's fuel supply to the experimental fuel supply and start the boiler. If the boiler's fuel start-up safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's fuel start-up safety interlock function cannot be used normally. If the boiler's fuel start-up safety interlock function is activated and the boiler is shut down, it is determined that the boiler's fuel start-up safety interlock function can be used normally.

[0083] Adjust the boiler's supply voltage to the normal starting voltage value and start the boiler. During the startup process, gradually reduce the boiler's supply voltage to the experimental voltage value according to the voltage reduction rate. If, during this process, the boiler's voltage-start safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's voltage-start safety interlock function cannot be used normally. If the boiler's voltage-start safety interlock function is activated and the boiler is shut down, it is determined that the boiler's voltage-start safety interlock function can be used normally.

[0084] In a specific embodiment of the present invention, the response delay threat coefficient of each normal start safety interlock function of the boiler is analyzed, and the specific analysis method is as follows: the start experiment time point of each normal start safety interlock function of the boiler, the predefined safety triggering time length l n , and according to the triggering time point of each normal start safety interlocking function of the boiler, calculate the triggering time x of each normal start safety interlocking function of the boiler n , where n represents the number of each normal startup safety interlocking function, n=1,2,...,m, and m is a positive integer greater than 2.

[0085] Analyze the response delay threat coefficient of each normal start-up safety interlock function of the boiler

[0086]

[0087] It should be noted that the start time point of the experiment for each normal startup safety interlocking function of the boiler is set by the staff.

[0088] The boiler startup safety analysis module of the present invention performs a boiler startup experiment to prevent the boiler from being damaged due to slow response or inability to use various startup safety interlocking functions.

[0089] The boiler safety device optimization module is used to determine whether the water level safety interlock function of the boiler can adjust the water level alarm value. If so, the boiler's alarm low water level adjustment value and alarm high water level adjustment value are evaluated, and whether the boiler's air pressure safety interlock function can adjust the air pressure alarm value. If so, the boiler's alarm low pressure adjustment value and alarm high pressure adjustment value are analyzed, and whether the normal start-up safety interlock functions of the boiler can adjust the dangerous response time value. If so, the dangerous response time adjustment value of each normal start-up safety interlock function of the boiler is calculated, and the abnormal safety interlock devices of each function of the boiler are screened and sent to the boiler maintenance person in charge for maintenance.

[0090] In a specific embodiment, the method for determining whether the water level safety interlock function of the boiler can adjust the water level alarm value is as follows: obtaining the response delay threat coefficient threshold of the water level safety interlock function from a local database, and comparing the response delay threat coefficient of the water level safety interlock function of the boiler with the response delay threat coefficient threshold; if the response delay threat coefficient of the water level safety interlock function of the boiler is greater than the response delay threat coefficient threshold, then it is determined that the water level safety interlock function of the boiler cannot adjust the water level alarm value; otherwise, it is determined that the water level safety interlock function of the boiler can adjust the water level alarm value.

[0091] In a specific embodiment of the present invention, the evaluation method for evaluating the alarm low water level adjustment value and the alarm high water level adjustment value of the boiler is as follows: obtaining from the local database the alarm high water level adjustment value corresponding to each high water level adjustment coefficient interval, the alarm low water level adjustment value corresponding to each low water level adjustment coefficient interval, the boiler's last high water level response sluggish threat coefficient p, and the boiler's last low water level response sluggish threat coefficient q.

[0092] Calculate the high water level adjustment coefficient of the boiler's water level safety interlock function based on the high water level response delay threat coefficient β of the boiler's water level safety interlock function And map to obtain the boiler's alarm high water level adjustment value.

[0093] Calculate the low water level adjustment coefficient of the boiler's water level safety interlock function based on the low water level response delay threat coefficient δ of the boiler's water level safety interlock function. And map to obtain the boiler's alarm low water level adjustment value.

[0094] In a specific embodiment, the method for judging whether the air pressure safety interlock function of the boiler can adjust the air pressure alarm value is: based on the method for judging whether the water level safety interlock function of the boiler can adjust the water level alarm value, judge whether the air pressure safety interlock function of the boiler can adjust the air pressure alarm value.

[0095] In a specific embodiment of the present invention, the alarm low-pressure adjustment value and the alarm high-pressure adjustment value of the boiler are analyzed, and the specific analysis method is: obtaining the alarm high-pressure adjustment value corresponding to each high-pressure adjustment coefficient interval, the alarm low-pressure adjustment value corresponding to each low-pressure adjustment coefficient interval, the boiler's last high-pressure response slow threat coefficient u, and the boiler's last low-pressure response slow threat coefficient w from the local database.

[0096] Calculate the high pressure adjustment coefficient of the boiler's gas pressure safety interlock function based on the high pressure response delay threat coefficient φ of the boiler's gas pressure safety interlock function. And map to obtain the boiler's alarm high pressure adjustment value.

[0097] Low pressure response delay threat factor based on boiler gas pressure safety interlock function Calculate the low pressure adjustment coefficient of the boiler's gas pressure safety interlock function And map to obtain the boiler's alarm low pressure adjustment value.

[0098] In a specific embodiment, the specific judgment method for judging whether the normal startup safety interlocking functions of the boiler can adjust the danger response time value is: based on the method of judging whether the water level safety interlocking function of the boiler can adjust the water level alarm value, judge whether the normal startup safety interlocking functions of the boiler can adjust the danger response time value.

[0099] In a specific embodiment of the present invention, the calculation method of the dangerous response time adjustment value of each normal startup safety interlocking function of the boiler is: obtaining the dangerous response time adjustment value corresponding to each response delay threat coefficient interval of each normal startup safety interlocking function from the local database.

[0100] According to the response delay threat coefficient of each normal startup safety interlocking function of the boiler, the dangerous response time adjustment value of each normal startup safety interlocking function of the boiler is mapped and obtained.

[0101] In a specific embodiment, the screening of the various functional abnormality safety interlocking devices of the boiler is carried out in the following specific screening method: if the water level safety interlocking function of the boiler cannot be used normally or the water level alarm value cannot be adjusted, the water level safety interlocking function of the boiler is recorded as a functional abnormality safety interlocking device; if the air pressure safety interlocking function of the boiler cannot be used normally or the air pressure alarm value cannot be adjusted, the air pressure safety interlocking function of the boiler is recorded as a functional abnormality safety interlocking device; if a certain starting safety interlocking function of the boiler cannot be used normally or the dangerous response time value cannot be adjusted, the starting safety interlocking function of the boiler is recorded as a functional abnormality safety interlocking device, and the various functional abnormality safety interlocking devices of the boiler are summarized.

[0102] The boiler safety device optimization module of the present invention, on the one hand, screens the safety interlocking devices of various functions of the boiler for abnormalities and notifies the boiler maintenance person in charge to carry out maintenance, thereby ensuring the normal operation of various safety interlocking functions of the boiler. On the other hand, by adjusting the alarm values ​​of various safety interlocking functions of the boiler, the problem of slow response caused by aging of various safety interlocking functions of the boiler is alleviated, thereby issuing an early alarm, reducing damage to the boiler, and extending the service life of the boiler.

[0103] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they should all fall within the scope of protection of the present invention.

Claims

1. A test system capable of verifying the safety interlocking function of a boiler, characterized in that: include: The boiler water level safety analysis module is used to conduct boiler water level tests to determine whether the boiler water level safety interlock function can be used normally. If it can be used normally, the module obtains the triggering time point of the boiler's high water level safety interlock function and the water level values ​​at each high water level monitoring time point. It also obtains the triggering time point of the boiler's low water level safety interlock function and the water level values ​​at each low water level monitoring time point, and analyzes the slow response threat coefficient of the boiler's water level safety interlock function. The specific analysis method for analyzing the slow response threat coefficient of the boiler's water level safety interlock function is as follows: Obtain the boiler's suitable water level value interval from the local database, and extract the boiler's maximum suitable water level value A and minimum suitable water level value a. Based on the water level values ​​at each high water level monitoring time point of the boiler, map the high water level monitoring time point at which the boiler reaches the maximum suitable water level value. Based on the water level values ​​at each low water level monitoring time point of the boiler, map the low water level monitoring time point at which the boiler reaches the minimum suitable water level value. Obtain the start time of the boiler's high water level test and the start time of the low water level test from the local database, calculate the time B required for the boiler to reach the maximum suitable water level value, and calculate the triggering time D of the boiler's high water level safety interlock function based on the triggering time of the boiler's high water level safety interlock function; Extract the water level value C at the time when the high water level safety interlock function of the boiler is triggered based on the time when the high water level safety interlock function of the boiler is triggered and the water level values ​​at each high water level monitoring time point; Calculation of the high water level response delay threat coefficient of the boiler's water level safety interlock function , where e is a natural constant; Based on the triggering time of the boiler's low water level safety interlock function and the water level values ​​at each low water level monitoring time point, similarly calculate the time b required for the boiler to reach the minimum suitable water level value, calculate the triggering time d for the boiler to trigger the low water level safety interlock function, and extract the water level value c at the triggering time point of the boiler's low water level safety interlock function; Calculation of the low water level response delay threat coefficient of the boiler's water level safety interlock function ; Analyze the water level safety interlock function response delay threat coefficient of the boiler ; The boiler pressure safety analysis module is used to conduct boiler pressure tests to determine whether the boiler pressure safety interlock function can be used normally. If it can be used normally, the module obtains the triggering time points of the high-pressure safety interlock function and the low-pressure safety interlock function of the boiler, and obtains the pressure values ​​of the boiler at each high-pressure test monitoring time point and each low-pressure test monitoring time point to analyze the response delay threat coefficient of the boiler pressure safety interlock function. The specific analysis method for analyzing the slow response threat coefficient of the boiler's gas pressure safety interlock function is as follows: Obtain the boiler's suitable air pressure range, the start time of the high-pressure experiment, and the start time of the low-pressure experiment from the local database, and extract the boiler's maximum suitable air pressure value F and minimum suitable air pressure value f; Based on the method for analyzing the slow response threat coefficient of the boiler's water level safety interlock function, similarly calculate the time G required for the boiler to reach the minimum suitable air pressure value, calculate the triggering time H for the boiler to trigger the low-pressure safety interlock function, and extract the air pressure value K at the time when the boiler's low-pressure safety interlock function is triggered. Calculate the time g required for the boiler to reach the maximum suitable air pressure value, calculate the triggering time h for the boiler to trigger the high-pressure safety interlock function, and extract the air pressure value k at the time when the boiler's high-pressure safety interlock function is triggered. Calculation of the high-pressure response delay threat factor of the boiler's water level safety interlock function ; Calculation of the low-pressure response delay threat factor of the boiler's water level safety interlock function ; Analyze the slow response threat factor of the boiler's gas pressure safety interlock function ; The boiler startup safety analysis module is used to conduct boiler startup experiments, determine whether the various startup safety interlock functions of the boiler can be used normally, screen the normal startup safety interlock functions of the boiler, obtain the triggering time points of each normal startup safety interlock function of the boiler, and analyze the response delay threat coefficient of each normal startup safety interlock function of the boiler; The specific analysis method for analyzing the slow response threat coefficient of each normal startup safety interlocking function of the boiler is as follows: Obtain the start time of the normal start safety interlock function of the boiler and the predefined safety trigger duration from the local database , and calculate the triggering time of each normal start safety interlocking function of the boiler based on the triggering time point of each normal start safety interlocking function of the boiler , where n represents the number of each normal start safety interlock function, , m is a positive integer greater than 2; Analyze the response delay threat coefficient of each normal start-up safety interlock function of the boiler ; The boiler safety device optimization module is used to determine whether the boiler's water level safety interlock function can adjust the water level alarm value. If so, it evaluates the boiler's alarm low water level adjustment value and alarm high water level adjustment value. It determines whether the boiler's air pressure safety interlock function can adjust the air pressure alarm value. If so, it analyzes the boiler's alarm low pressure adjustment value and alarm high pressure adjustment value. It determines whether the boiler's normal start-up safety interlock function can adjust the dangerous response time value. If so, it calculates the dangerous response time adjustment value of the boiler's normal start-up safety interlock function, screens the boiler's various functional abnormal safety interlock devices, and sends them to the boiler maintenance person in charge for repair.

2. A boiler safety interlock function test system according to claim 1, characterized in that: The boiler water level test is conducted to determine whether the boiler water level safety interlock function can be used normally. The specific method is as follows: Obtain the boiler experimental water level interval from the local database and extract the maximum and minimum values ​​of the boiler experimental water level interval; Start the boiler and add the boiler water level value to the maximum value of the boiler experimental water level interval through the water inlet. If the boiler high water level safety interlock function is not started or the boiler is not shut down, it is judged that the boiler water level safety interlock function cannot be used normally. If the boiler high water level safety interlock function is started and the boiler is shut down, the boiler water level value is discharged to the minimum value of the boiler experimental water level interval and the boiler is started. If the boiler low water level safety interlock function is not started or the boiler is not shut down, it is judged that the boiler water level safety interlock function cannot be used normally. If the boiler low water level safety interlock function is started and the boiler is shut down, it is judged that the boiler water level safety interlock function can be used normally, and the triggering time point of the boiler high water level safety interlock function and the water level value of each high water level monitoring time point are obtained, and the triggering time point of the boiler low water level safety interlock function and the water level value of each low water level monitoring time point are obtained.

3. A boiler safety interlock function test system according to claim 1, characterized in that: The boiler pressure test is conducted to determine whether the boiler pressure safety interlock function can be used normally. The specific method is as follows: Obtain the experimental air pressure range and experimental power value from the local database, and extract the maximum and minimum values ​​of the experimental air pressure range; After the boiler is completely exhausted, start the boiler and close all the exhaust ports of the boiler, so that the boiler's furnace pressure value is gradually increased to the high value of the experimental pressure. If during this process, the boiler's furnace pressure value increases to the high value of the boiler's experimental pressure and the boiler's pressure safety interlock function is not activated, it is determined that the boiler's pressure safety interlock function cannot be used normally. If the boiler's pressure safety interlock function is activated and the boiler is shut down, the boiler's power is adjusted to the experimental power value, and all the exhaust ports of the boiler are opened and started, so that the boiler's furnace pressure value is gradually reduced to the low value of the experimental pressure. If during this process, the boiler's pressure safety interlock function is activated and the boiler is shut down, it is determined that the boiler's pressure safety interlock function can be used normally. If the boiler's furnace pressure value increases to the low value of the boiler's experimental pressure and the boiler's pressure safety interlock function is still not activated, it is determined that the boiler's pressure safety interlock function cannot be used normally, and the triggering time point of the boiler's high-pressure safety interlock function and the triggering time point of the low-pressure safety interlock function of the boiler are obtained, and the pressure values ​​of each high-pressure experimental monitoring time point and the pressure values ​​of each low-pressure experimental monitoring time point of the boiler are obtained.

4. A boiler safety interlock function test system according to claim 1, characterized in that: The boiler startup test is conducted to determine whether the various startup safety interlocking functions of the boiler can be used normally. The specific method is as follows: Obtain the experimental starting water level value, experimental supply fuel quantity, normal starting voltage value, experimental voltage value and voltage reduction rate from the local database; Adjust the boiler water level to the experimental start-up water level value and start the boiler. If the boiler's water level start-up safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's water level start-up safety interlock function cannot be used normally. If the boiler's water level start-up safety interlock function is activated and the boiler is shut down, it is determined that the boiler's water level start-up safety interlock function can be used normally. Adjust the boiler's fuel supply to the experimental fuel supply and start the boiler. If the boiler's fuel start-up safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's fuel start-up safety interlock function cannot be used normally. If the boiler's fuel start-up safety interlock function is activated and the boiler is shut down, it is determined that the boiler's fuel start-up safety interlock function can be used normally. Adjust the boiler's supply voltage to the normal starting voltage value and start the boiler. During the startup process, gradually reduce the boiler's supply voltage to the experimental voltage value according to the voltage reduction rate. If, during this process, the boiler's voltage-start safety interlock function is not activated or the boiler is not shut down, it is determined that the boiler's voltage-start safety interlock function cannot be used normally. If the boiler's voltage-start safety interlock function is activated and the boiler is shut down, it is determined that the boiler's voltage-start safety interlock function can be used normally.

5. A boiler safety interlock function test system according to claim 1, characterized in that: The specific evaluation method for evaluating the boiler's low water level adjustment value and high water level adjustment value is as follows: Obtain from the local database the alarm high water level adjustment value corresponding to each high water level adjustment coefficient interval, the alarm low water level adjustment value corresponding to each low water level adjustment coefficient interval, the boiler's last high water level response delay threat coefficient p, and the boiler's last low water level response delay threat coefficient q; High water level response delay threat factor based on the boiler's water level safety interlock function , calculate the high water level adjustment coefficient of the boiler's water level safety interlock function , and mapped to obtain the boiler's alarm high water level adjustment value; Based on the low water level response delay threat factor of the boiler's water level safety interlock function , calculate the low water level adjustment coefficient of the boiler's water level safety interlock function , and mapped to obtain the boiler's alarm low water level adjustment value.

6. A boiler safety interlock function test system according to claim 1, characterized in that: The specific analysis method for analyzing the alarm low pressure adjustment value and the alarm high pressure adjustment value of the boiler is as follows: Obtain from the local database the alarm high-pressure adjustment value corresponding to each high-pressure adjustment coefficient interval, the alarm low-pressure adjustment value corresponding to each low-pressure adjustment coefficient interval, the boiler's last high-pressure response slow threat coefficient u, and the boiler's last low-pressure response slow threat coefficient w; High pressure response delay threat factor based on boiler gas pressure safety interlock function , calculate the high pressure regulation coefficient of the boiler's gas pressure safety interlock function , and mapped to obtain the boiler's alarm high pressure adjustment value; Low pressure response delay threat factor based on boiler gas pressure safety interlock function , calculate the low pressure regulation coefficient of the boiler's gas pressure safety interlock function , and mapped to obtain the boiler's alarm low pressure adjustment value.

7. A boiler safety interlock function test system according to claim 1, characterized in that: The specific calculation method for calculating the dangerous response time adjustment value of each normal startup safety interlock function of the boiler is: Obtaining from the local database the dangerous response time adjustment value corresponding to each slow response threat coefficient interval of each normally activated safety interlocking function; According to the response delay threat coefficient of each normal startup safety interlocking function of the boiler, the dangerous response time adjustment value of each normal startup safety interlocking function of the boiler is mapped and obtained.

Images