A method and system for self-starting control of a heating gas boiler

Abstract

The application relates to a heat supply gas boiler self-starting control method and system, wherein the method comprises the following steps: setting full starting conditions and half starting conditions; when all the full starting conditions are met, a starting instruction is sent, and it is judged whether a first time difference is less than a minimum preset value; if yes, a boiler purging program is directly started, and a purging time is determined according to the first time difference; if no, a gas boiler main gas valve group tightness checking program is started first, and when the checking passes, the boiler purging program is carried out, wherein the first time difference is the time difference between the half starting completion time of the last time and the current full starting time; after the tightness checking and the purging both pass, a boiler ignition program is started, if the ignition program fails, the starting program is interrupted and exited; if the ignition program succeeds, stable combustion is carried out, and after the stable combustion is completed, the starting program is exited. According to the application, the cold-state starting time of the boiler is shortened, the energy consumption is reduced, and the operation is simple.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of boiler starting system, in particular to a heating gas boiler self-starting control method and system. BACKGROUND

[0002] With the vigorous call of national energy saving and emission reduction, how to reduce the power plant energy consumption is increasingly important. For the heating gas unit power plant, generally heating gas boiler is used for hot standby to avoid abnormal shutdown of gas unit, so that the user cannot normal heating, and heating interruption occurs. However, in order to achieve the purpose of rapid start, the heating gas boiler can only adopt low load operation strategy, but the minimum stable operation load of gas boiler is generally about 30% of full load, and the boiler thermal efficiency is low under this condition, which is not economical and wastes fuel. In addition, most of the current power plant gas boilers use manual starting mode, and the starting process is greatly affected by human factors, and the automation level is low. A large amount of human judgment and operation is needed during the process, which is labor intensive and tedious and repetitive, and also leads to poor system safety.

[0003] At present, there is no effective solution to the problems of complicated operation and low efficiency of heating gas boiler starting in the related art. SUMMARY

[0004] The embodiments of the present application provide a heating gas boiler self-starting control method and system to at least solve the problems of complicated operation and low efficiency of heating gas boiler starting in the related art.

[0005] In a first aspect, the embodiments of the present application provide a heating gas boiler self-starting control method, which comprises:

[0006] Defining and setting full starting control conditions and half starting control conditions;

[0007] If all full starting conditions are met, a starting instruction is issued, and it is judged whether the first time difference is less than the minimum preset value. If yes, the boiler purging program is directly started, and the purging time is determined according to the first time difference. If no, the gas boiler main gas valve group tightness checking program is started before starting the boiler purging program. If the checking is passed, the boiler purging program is performed, wherein the first time difference is the time difference between the previous half starting completion time and the current full starting time;

[0008] After the tightness checking and purging are passed, the boiler ignition program is started. If the ignition fails, the gas boiler starting program is interrupted and exited. If the ignition is successful, the boiler is stably combusted, and after the stable combustion program is completed, the gas boiler starting program is exited.

[0009] In some embodiments, the method further comprises:

[0010] In the case of only starting the semi-starting control mode, the current semi-starting completion time is recorded, and in the case that the semi-starting control conditions are all satisfied, a semi-starting instruction is issued, the gas boiler main gas valve group tightness check and the boiler purging program are performed, and after all are completed, the starting process is directly exited and the machine is stopped.

[0011] In some embodiments, if the interrupt program is triggered in the full starting mode, or in the case of only starting the semi-starting mode, the method comprises:

[0012] The preset bias time is added to the initial value of the original purging time to obtain a new initial value of the purging time.

[0013] In some embodiments, determining the purging time according to the first time difference comprises:

[0014] According to the first time difference, the purging time is determined by a self-defined calculation method, and the specific calculation formula is as follows:

[0015] Purge_Time1 = Purge_Time0 - (1 - K) * △Purge_Time1

[0016] K = Semi-Started_Time / Run_Time

[0017] Wherein, Purge_Time1 is the calculated purging time, Purge_Time0 is the original purging time, △Purge_Time1 takes (0.5-0.6) * Purge_Time0 seconds, Semi-Started_Time is the first time difference, and Run_Time is the interval time of each semi-starting of the gas boiler.

[0018] In some embodiments, the determination of the purging time further comprises:

[0019] According to the self-defined calculation method, the calculated purging time is amplitude limited to obtain the optimal purging time, and the specific calculation formula is as follows:

[0020] Purge_Time = MAX[Purge_Time1, 0.5 * Purge_Time0]

[0021] Wherein, Purge_Time is the optimal purging time, Purge_Time0 is the original purging time, and Purge_Time1 is the calculated purging time.

[0022] In some embodiments, when the gas boiler main gas valve group tightness check is performed, if the check fails, the gas boiler starting process is directly exited.

[0023] In some embodiments, the method further comprises:

[0024] A preset interruption condition is set, and the gas boiler shutdown program is automatically executed as long as any interruption condition is triggered.

[0025] In a second aspect, the embodiments of the present application provide a self-starting control system for a heating gas boiler, which comprises:

[0026] A setting module is configured to set full starting control conditions and half starting control conditions;

[0027] A full starting module is configured to issue a starting instruction when all the full starting conditions are met, and determine whether a first time difference is less than a minimum preset value, if yes, directly start a boiler purging program, and determine a purging time according to the first time difference, if no, start a gas boiler main gas valve group tightness check program before starting the boiler purging program, and perform the boiler purging program when the check is passed, wherein the first time difference is a time difference between a previous half starting completion time and a current full starting time.

[0028] After the tightness check and the purging are passed, a boiler ignition program is started, if the ignition fails, the gas boiler starting program is interrupted and exited, if the ignition succeeds, the boiler is stably combusted, and after the stable combustion program is completed, the gas boiler starting program is exited.

[0029] In some embodiments, the system further comprises a half starting module,

[0030] The half starting module is configured to record a current half starting completion time when only a half starting control mode is started, and issue a half starting instruction when all the half starting control conditions are met, perform the gas boiler main gas valve group tightness check and the boiler purging program, and directly exit the starting process and shut down after both are completed.

[0031] In some embodiments, if an interruption program is triggered in the full starting mode, or in the case of only starting the half starting mode,

[0032] A preset bias time is added to the original purging time initial value to obtain a new purging time initial value.

[0033] Compared with the related art, the self-starting control method for the heat supply gas boiler provided by the embodiments of the present application defines the full starting control condition and the half starting control condition; in the case that all the full starting conditions are met, a starting instruction is sent, and it is judged whether the first time difference is less than a minimum preset value, if yes, the boiler purging program is directly started, and the purging time is determined according to the first time difference, if no, the gas boiler main gas valve group tightness checking program is started before the boiler purging program is started, in the case that the checking is passed, the boiler purging program is performed, wherein the first time difference is the time difference between the previous half starting completion time and the current full starting time; after the tightness checking and the purging are both passed, the boiler ignition program is started, if the ignition fails, the gas boiler starting program is interrupted and exited, if the ignition succeeds, the boiler is subjected to stable combustion, and after the stable combustion program is completed, the gas boiler starting program is exited.

[0034] Through the self-starting control system for the heat supply gas boiler, the gas main gas valve group tightness checking and the boiler purging can be adaptively controlled, the cold-state starting time of the boiler is effectively shortened, and it is of great significance to improve the automation level of the unit, save energy and reduce consumption, and improve the economic efficiency of the unit operation. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate certain illustrative embodiments of the present application and together with the description serve to explain the present application. In the drawings:

[0036] Figure 1 is a flow chart of the self-starting control method for the heat supply gas boiler according to the embodiments of the present application;

[0037] Figure 2 is a schematic diagram of the self-starting process of the heat supply gas boiler according to the embodiments of the present application;

[0038] Figure 3 is a process flow chart of the heat supply gas boiler system according to the embodiments of the present application;

[0039] Figure 4 is a structural block diagram of the self-starting control system for the heat supply gas boiler according to the embodiments of the present application;

[0040] Figure 5 is a structural block diagram of another self-starting control system for the heat supply gas boiler according to the embodiments of the present application;

[0041] Figure 6 is a schematic diagram of the internal structure of an electronic device according to the embodiments of the present application. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is described and explained below in connection with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application. In addition, it can be understood that, although the efforts made in this development process can be complex and lengthy, some design, manufacturing or production changes made on the basis of the technical content disclosed in the present application are only routine technical means for those of ordinary skill in the art related to the content disclosed in the present application, and should not be understood as insufficient disclosure of the present application.

[0043] In the present application, the term "embodiment" means that the specific features, structures or properties described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment to other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments without conflict.

[0044] Unless otherwise defined, the technical terms or scientific terms involved in the present application should be understood as the usual meaning understood by those of ordinary skill in the art to which the present application belongs. The terms "one", "a", "an", "the" and the like similar words involved in the present application do not represent quantity limitation, but can represent singular or plural. The terms "include", "contain", "have" and any variations thereof involved in the present application are intended to cover non-exclusive inclusion; for example, a process, method, system, product or device including a series of steps or modules (units) is not limited to the listed steps or units, but can also include steps or units not listed, or can also include other steps or units inherent to these processes, methods, products or devices. The terms "connected", "connected", "coupled" and the like similar words involved in the present application are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The term "multiple" in the present application means greater than or equal to two. The term "and / or" describes the association between the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean that A exists alone, A and B exist together, and B exists alone. The terms "first", "second", "third" and the like in the present application are only to distinguish similar objects, and do not represent a specific order for the objects.

[0045] The present embodiment provides a self-starting control method for a heating gas boiler, Figure 1is a flow chart of a self-starting control method for a heat supply gas-fired boiler according to an embodiment of the present application, as shown in Figure 1 The flow chart includes the following steps:

[0046] Step S101, self-defining full starting control conditions and half starting control conditions;

[0047] Preferably, the full starting control conditions and the half starting control conditions are self-defined in the embodiment, wherein the full starting control conditions include:

[0048] (1) the unit air-gas ratio interlock has been put into operation;

[0049] (2) the load control valve is at the minimum opening;

[0050] (3) the natural gas inlet pressure is normal;

[0051] (4) the furnace pressure regulating pipeline pressure is normal;

[0052] (5) the DCS system of the gas-fired boiler has no MFT action signal;

[0053] (6) the furnace has no fire;

[0054] (7) the air blower has no fault;

[0055] (8) the FGR blower has no fault;

[0056] (9) the opening of the secondary air damper regulating valve of the burner is less than 5%.

[0057] The half starting control conditions include:

[0058] (1) the furnace has no fire;

[0059] (2) the air blower has no fault;

[0060] (3) the opening of the secondary air damper regulating valve of the burner is less than 5%;

[0061] (4) the natural gas inlet pressure is normal;

[0062] (5) the furnace pressure regulating pipeline pressure is normal.

[0063] When all the full starting conditions are met, the gas-fired boiler enters the full starting mode; when all the half starting conditions are met, the gas-fired boiler enters the half starting mode. It should be noted that the half starting mode will be automatically triggered once every preset time period.

[0064] Step S102: If all full start conditions are met, issue a start command and determine whether the first time difference is less than the minimum preset value. If yes, start the boiler purging program directly and determine the purging time based on the first time difference. If no, start the gas boiler main gas valve group tightness check program before starting the boiler purging program. If the check passes, proceed with the boiler purging program. The first time difference is the time difference between the previous half start completion time and the current full start time.

[0065] Figure 2 This is a schematic diagram of the self-starting process of a gas-fired heating boiler according to an embodiment of this application, as shown below. Figure 2 As shown, when all full-start conditions are met, a start command is issued to initiate the full-start mode. First, it is determined whether the first time difference, i.e., the time difference between the completion time of the previous half-start and the current full-start time, is less than the minimum preset value. If so, the boiler purging program is started directly, and the purging time is determined based on the first time difference. Preferably, in this embodiment, the purging time is determined by a custom calculation method, and the specific calculation formulas are shown in equations (1)-(2) below:

[0066] Purge_Time1=Purge_Time0-(1-K)*△Purge_Time1 (1)

[0067] K=Semi-Started_Time / Run_Time (2)

[0068] Wherein, Purge_Time1 is the calculated purging time, Purge_Time0 is the initial value of the original purging time, △Purge_Time1 is (0.5~0.6)*Purge_Time0 seconds, Semi-Started_Time is the first time difference, and Run_Time is the interval between each start-up of the gas boiler in semi-start mode, which can be 4~6 hours.

[0069] In some embodiments, to avoid the boiler purging time being too short and resulting in poor purging effect, the purging time calculated above can be limited by a custom calculation method to obtain the optimal purging time. The specific calculation formula is shown in the following formula (3):

[0070] Purge_Time=MAX[Purge_Time1,0.5*Purge_Time0] (3)

[0071] Wherein, Purge_Time is the optimal purging time, Purge_Time0 is the initial value of the original purging time, and Purge_Time1 is the calculated purging time.

[0072] Conversely, if the first time difference is greater than the minimum preset value, the gas boiler main gas valve group tightness check program is started before the boiler purge program is started. If the check passes, the boiler purge program is performed. If the check fails, the gas boiler starting process is directly exited.

[0073] Preferably, the minimum preset value MIN_time in the embodiment can be 20%*Run_Time or 25%*Run_Time, where Run_Time is the start interval time of each half start mode of the gas boiler.

[0074] Step S103, after the tightness check and purge pass, the boiler ignition program is started. If the ignition fails, the gas boiler starting program is interrupted and exited. If the ignition is successful, the boiler is stably combusted, and after the stable combustion program is completed, the gas boiler starting program is exited.

[0075] Through the above steps S101 to S103, the embodiment can adaptively control the gas main gas valve group tightness check and the boiler purge of the boiler, effectively shortening the cold start time of the boiler, which is of great significance to improve the automation level of the unit, save energy and reduce consumption, and improve the economic efficiency of the unit operation.

[0076] In some embodiments, only the half start control mode is started. In this case, it is judged whether all the half start control conditions are met. If all the conditions are met, a half start instruction is issued, the gas boiler main gas valve group tightness check and the boiler purge program are performed, and after both are completed, the starting process is directly exited and the machine is stopped. During this period, the current half start completion time is also recorded for calculating the first time difference.

[0077] In some embodiments, the gas boiler will trigger an interruption program due to some reasons. The specific interruption triggering conditions include: (1) boiler tripping first; (2) gas main gas valve leakage, leak detection failure; (3) gas boiler small fire or main fire failure. As long as any of the interruption conditions is triggered, the gas boiler shutdown program will be automatically executed.

[0078] Optionally, if the interruption program is triggered in the full start mode, or in the case of only starting the half start mode,

[0079] The self-starting control method further comprises: increasing a preset bias time on the basis of the original purge time initial value to obtain a new purge time initial value, and the specific calculation formula is shown in the following formula (4):

[0080] Purge_Time=Purge_Time0+△Purge_Time0 (4)

[0081] Wherein, Purge_Time0 is the original purge time initial value, △Purge_Time is the purge time offset value. Preferably, Purge_Time0 can be 120-150 seconds, and △Purge_Time0 is (0.4-0.5)*Purge_Time0 seconds.

[0082] The following is a specific embodiment of the above-mentioned self-starting control method for a heating gas-fired boiler:

[0083] Figure 3 The heating gas-fired boiler system process flow chart according to the embodiment of the present application is shown in FIG. 1. In the full start mode, it is determined whether the first time difference is less than the minimum preset value. If yes, the boiler purge program is directly started. If no, the gas-fired boiler main gas valve group tightness check program is started before the boiler purge program is started. The specific check steps include: Figure 3

[0084] STEP_1: Close the gas main gas valve group A1, A2, B1, B2;

[0085] STEP_2: Open the gas main gas valves A1, A2, and delay for 3 seconds;

[0086] STEP_3: Close the gas main gas valves A1, A2, and delay for 5 seconds;

[0087] STEP_4: Delay for 10 seconds, and perform leak detection on A1, A2. If the gas main gas valves A1, A2 are tight, the leak detection is completed, and the next step is executed. If the gas main gas valves A1, A2 leak, the leak detection fails, an interruption program is triggered, and the gas-fired boiler start program is exited;

[0088] STEP_5: Open the gas main gas valves B1, B2, and delay for 3 seconds;

[0089] STEP_6: Close the gas main gas valves B1, B2, and delay for 5 seconds;

[0090] STEP_7: Delay for 10 seconds, and perform leak detection on B1, B2. If the gas main gas valves B1, B2 are tight, the leak detection is completed, and the next step is executed. If the gas main gas valves B1, B2 leak, the leak detection fails, an interruption is triggered, and the gas-fired boiler start program is exited;

[0091] STEP_8: Delay for 10 seconds, and perform leak detection on the gas main gas valve group A1, A2, B1, B2. If the tightness is good, the leak detection is successful.

[0092] In the case that the gas main gas valve group tightness check program passes or leak detection is not required, the boiler purge program is started. The specific purge steps include:

[0093] ​STEP_1: Start the blower, the default frequency is 40 Hz, and delay for 10 seconds;

[0094] STEP_2: Open the burner primary air damper and secondary air damper to 60%;

[0095] STEP_3: Start the boiler purge timer, the purge time is Purge_Time seconds, and the purge is completed before the boiler is ignited. The purge time is appropriately shortened according to the size of the first time difference to speed up the start-up process.

[0096] After the tightness check and purge are completed, start the boiler ignition program, and the specific ignition steps include:

[0097] STEP_1: Close the burner primary air damper to 0%, close the secondary air damper to 6%, open the gas regulating valve to 13.5%, and reduce the blower frequency to 28 Hz;

[0098] STEP_2: Open the gas igniter and keep for 8 seconds, and delay for 1 second after the gas igniter is started;

[0099] STEP_3: Open the gas ignition valve, open the gas main valve A1 and A2;

[0100] STEP_4: Light the small fire and delay for 7 seconds, if the small fire is successfully lit, continue to the next step, if the small fire fails, trigger the interrupt program and exit the gas boiler start program;

[0101] STEP_5: Open the gas main valve B1 and B2, and delay for 6 seconds;

[0102] STEP_6: Light the main fire and delay for 5 seconds, if the main fire is successfully lit, continue to the next step, if the main fire fails, trigger the interrupt program and exit the gas boiler start program;

[0103] STEP_7: Delay for 5 seconds, if the flame is detected by the flame detector, the ignition is successful.

[0104] If the ignition is successful, the boiler is subjected to stable combustion, and the specific steps include:

[0105] STEP_1: Open the primary air damper to 6%, open the secondary air damper to 7.5%, and open the gas regulating valve to 23.5%;

[0106] STEP_2: Start the FGR blower, and the FGR blower mode is put into automatic mode;

[0107] STEP_3: Delay for 120 seconds, and the stable combustion is completed.

[0108] After the stable combustion program is completed, exit the gas boiler start program.

[0109] It is noted that the steps shown in the above flow or the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from here.

[0110] The embodiment also provides a heating gas boiler self-starting control system for realizing the above embodiment and preferred implementation, which has been described above. As used below, the terms "module", "unit", "sub-unit" and the like can be a combination of software and / or hardware that realizes a predetermined function. Although the apparatus described in the following embodiment is preferably realized in software, realization of hardware, or a combination of software and hardware is also possible and contemplated.

[0111] Figure 4 is a structural block diagram of a heating gas boiler self-starting control system according to the embodiment of the present application, as shown in Figure 4 The system includes a setting module 41 and a full starting module 42:

[0112] The setting module 41 is used for custom setting full starting control conditions and half starting control conditions; the full starting module 42 is used for issuing a starting instruction in the case that all full starting conditions are met, and judging whether a first time difference is less than a minimum preset value, if yes, directly starting a boiler purging program, and determining a purging time according to the first time difference, if no, starting a gas boiler main gas valve group tightness checking program before starting the boiler purging program, in the case that the checking is passed, carrying out the boiler purging program, wherein the first time difference is a time difference between a previous half starting completion time and a current full starting time, after the tightness checking and the purging are both passed, starting a boiler ignition program, if the ignition fails, interrupting and exiting the gas boiler starting program, if the ignition succeeds, carrying out stable combustion for the boiler, and after completing the stable combustion program, exiting the gas boiler starting program.

[0113] Through the above system, the embodiment can adaptively control the gas main gas valve group tightness checking of the boiler and the boiler purging, effectively shortens the cold-state starting time of the boiler, and has important significance for improving the automation level of the unit, saving energy and reducing consumption, and improving the economic efficiency of the unit operation.

[0114] In some embodiments, the above system also includes a half starting module, therefore, Figure 5 is a structural block diagram of another heating gas boiler self-starting control system according to the embodiment of the present application, as shown in Figure 5As shown, the system comprises a setting module 41, a full start module 42 and a half start module 51. The half start module 51 is configured to record a current half start completion time when only the half start control mode is started, and send a half start instruction to perform a gas boiler main gas valve group tightness check and a boiler purging procedure when all the half start control conditions are met, and directly exit the start process and shut down after the procedures are completed.

[0115] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementation manners, and this embodiment will not be repeated here.

[0116] In addition, it should be noted that each of the above modules can be a functional module or a program module, and can be implemented by software or hardware. For the modules implemented by hardware, each of the above modules can be located in the same processor; or each of the above modules can also be located in different processors in any combination.

[0117] The embodiment also provides an electronic device, including a memory and a processor, the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any of the above method embodiments.

[0118] Optionally, the above electronic device can further include a transmission device and an input and output device, wherein the transmission device is connected with the processor, and the input and output device is connected with the processor.

[0119] In addition, in combination with the self-starting control method of the heat supply gas boiler in the above embodiments, the embodiment can provide a storage medium for implementation. The storage medium stores a computer program; when the computer program is executed by a processor, any of the above self-starting control methods of the heat supply gas boiler is implemented.

[0120] In one embodiment, a computer device is provided, which can be a terminal. The computer device comprises a processor, a memory, a network interface, a display screen and an input device connected through a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for running the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is configured to communicate with an external terminal through a network connection. The computer program is executed by the processor to implement a self-starting control method for a heating gas boiler. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0121] In one embodiment, Figure 6 is a schematic diagram of the internal structure of an electronic device according to an embodiment of the present application, as Figure 6 indicated, an electronic device is provided, which can be a server, and the internal structure diagram thereof can be as Figure 6 indicated. The electronic device comprises a processor, a network interface, an internal memory and a non-volatile memory connected through an internal bus, wherein the non-volatile memory stores an operating system, a computer program and a database. The processor is configured to provide computing and control capabilities, the network interface is configured to communicate with an external terminal through a network connection, the internal memory is configured to provide an environment for running the operating system and the computer program, the computer program is executed by the processor to implement a self-starting control method for a heating gas boiler, and the database is configured to store data.

[0122] Those skilled in the art can understand that Figure 6 the structure shown in the above embodiment is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the electronic device to which the scheme of the present application is applied. Specifically, the electronic device can comprise more or fewer components than those shown in the diagram, or some components can be combined, or have a different arrangement of components.

[0123] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiment methods. Any reference to memory, storage, database or other medium used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration but not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0124] Those skilled in the art should understand that each technical feature of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, not all possible combinations of each technical feature in the above-mentioned embodiments are described, however, as long as the combination of these technical features does not exist contradictory, it should be considered as the scope of the present application.

[0125] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A method for the self-starting control of a heating gas boiler, characterized by, The method comprises: customizing full start control conditions and semi-start control conditions; if all full start conditions are met, issuing a start instruction, and determining whether a first time difference is less than a minimum preset value, if yes, directly starting a boiler purging program, and determining a purging time according to the first time difference, if no, starting a gas valve group tightness checking program before starting the boiler purging program, and if the checking is passed, performing the boiler purging program, wherein the first time difference is a time difference between a previous semi-start completion time and a current full start time; after the tightness checking and the purging are passed, starting a boiler ignition program, if the ignition fails, interrupting and exiting the gas boiler start program, if the ignition succeeds, performing stable combustion on the boiler, and after the stable combustion program is completed, exiting the gas boiler start program.

2. The method of claim 1, wherein, The method further comprises: if only a semi-start control mode is started, recording a current semi-start completion time, and if all semi-start control conditions are met, issuing a semi-start instruction, performing the gas valve group tightness checking and the boiler purging program, and after both are completed, directly exiting the start process and shutting down.

3. The method according to claim 1 or 2, characterized in that, if an interrupt program is triggered in a full start mode, or if only a semi-start mode is started, the method comprises: increasing a preset bias time on the basis of an original purging time initial value to obtain a new purging time initial value.

4. The method of claim 1, wherein, determining the purging time according to the first time difference comprises: determining the purging time according to the first time difference by a self-defined calculation method, and a specific calculation formula is as follows: Purge_Time1 = Purge_Time0 - (1 - K) * △Purge_Time1 K = Semi-Started_Time / Run_Time wherein Purge_Time1 is the calculated purging time, Purge_Time0 is the original purging time, △Purge_Time1 takes (0.5-0.6) * Purge_Time0 seconds, Semi-Started_Time is the first time difference, and Run_Time is an interval time of each semi-start of the gas boiler.

5. The method of claim 4, wherein, determining the purging time further comprises: amplitude-limiting the calculated purging time according to the self-defined calculation method to obtain an optimal purging time, and a specific calculation formula is as follows: Purge_Time = MAX[Purge_Time1, 0.5 * Purge_Time0] wherein Purge_Time is the optimal purging time, Purge_Time0 is the original purging time, and Purge_Time1 is the calculated purging time.

6. The method of claim 1, wherein, if the checking is not passed when the gas valve group tightness checking is performed, directly exiting the gas boiler start process.

7. The method of claim 1, wherein, The method further comprises: presetting interrupt conditions, and as long as any interrupt condition is triggered, automatically performing a gas boiler shutdown program.

8. A control system for the automatic start-up of a heating gas boiler, characterized in that it comprises: The system comprises: a setting module configured to customize full start control conditions and semi-start control conditions; The full start module is used to issue a start instruction when all full start conditions are met, and to determine whether the first time difference is less than a minimum preset value. If yes, the boiler purging program is directly started, and the purging time is determined according to the first time difference. If no, the gas boiler main gas valve group tightness checking program is started before the boiler purging program is started. If the checking passes, the boiler purging program is performed. The first time difference is the time difference between the previous half start completion time and the current full start time. After the tightness checking and purging pass, the boiler ignition program is started. If the ignition fails, the gas boiler start program is interrupted and exited. If the ignition succeeds, the boiler is stably combusted, and after the stable combustion program is completed, the gas boiler start program is exited.

9. The system of claim 8, wherein, The system further comprises a half start module, The half start module is used to record the current half start completion time when only the half start control mode is started. When all half start control conditions are met, a half start instruction is issued, the gas boiler main gas valve group tightness checking and boiler purging program are performed, and after both are completed, the start process is directly exited and the machine is stopped.

10. The system of claim 8 or 9, characterized in that, If the interrupt program is triggered in the full start mode, or in the case of only starting the half start mode, A preset bias time is added to the original purging time initial value to obtain a new purging time initial value.

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