A warning method and system for residential heating steam boilers

Abstract

The present invention discloses an early warning method and system for residential heating steam boilers, the system comprising: a calling module for sending a rated boiler evaporation capacity, an acquisition module for acquiring the actually measured boiler fuel consumption and fuel low calorific value, and sending the fuel consumption and fuel low calorific value, a processing module for receiving the rated boiler evaporation capacity, fuel consumption and fuel low calorific value, and calculating the thermal efficiency of the boiler, and sending an alarm signal when the thermal efficiency is lower than a predetermined value, a detection module for receiving the alarm signal, and comparing a deviation value between the thermal efficiency and the predetermined value with a plurality of preset values ​​preset in the detection module, selecting a preset value with the smallest difference from the deviation value, and calling the early warning signal corresponding to the preset value for sending; the present invention enables the staff to know the most likely cause of the fault in the first time, and conduct manual investigation, thereby improving work efficiency and avoiding duplication of work.

Description

Technical Field

[0001] The present invention belongs to the field of residential heating steam boiler systems, and in particular relates to an early warning method and system applied to residential heating steam boilers. Background Art

[0002] The working principle of a steam boiler is that the heat released by the heating device (burner) is first absorbed by the water-cooled walls through radiation heat transfer. The water in the water-cooled walls boils and vaporizes, generating a large amount of steam that enters the steam drum for steam-water separation (except in once-through boilers). The separated saturated steam enters the superheater, where it continues to absorb heat from the flue gas at the top of the furnace, in the horizontal and tail flues, through radiation and convection, bringing the superheated steam to the required operating temperature. Power generation boilers are often also equipped with a reheater to heat the steam after it has been used in the high-pressure cylinder. The reheated steam from the reheater then flows to the medium- and low-pressure cylinders to continue generating electricity. In simple terms, a steam boiler is a device that absorbs the heat energy of fuel combustion and converts water into steam of specific parameters (such as pressure and temperature). A boiler consists of two parts: the boiler, which is a metal container for holding water, and the furnace, where the fuel is burned. The water in the boiler absorbs the heat from the combustion of the fuel in the furnace, converting it into steam. The basic principle is similar to boiling water, with the boiler being equivalent to a kettle and the furnace being equivalent to a stove.

[0003] During the operation of existing steam boilers, there is no early warning system to predict possible failures. Therefore, each time a failure occurs, each pipeline must be checked one by one, resulting in a great waste of resources and time. Because the on-duty personnel may be different each time a failure occurs, the location of the failure is only guessed manually, and there is no system to provide prompts and early warnings. In addition, there is no complete early warning system to alarm, which causes inconvenience in use. Summary of the Invention

[0004] The purpose of the present invention is to provide an early warning method and system for residential heating steam boilers, which can provide early warning for existing steam boilers, send early warning signals when the boiler fails or the thermal efficiency is reduced, guide the staff, and quickly resolve the fault.

[0005] The present invention adopts the following technical solution: an early warning system for residential heating steam boilers, comprising:

[0006] The retrieval module is used to retrieve the rated boiler evaporation capacity of the residential heating steam boiler and send the rated boiler evaporation capacity.

[0007] The acquisition module is used to obtain the measured boiler fuel consumption and fuel low calorific value, and send the fuel consumption and fuel low calorific value,

[0008] The processing module is used to receive the rated boiler evaporation capacity, fuel consumption and fuel low calorific value, and calculate the thermal efficiency of the boiler. When the thermal efficiency is lower than the preset value, an alarm signal is sent.

[0009] The detection module is used to receive the alarm signal, and compare the deviation value between the thermal efficiency and the predetermined value with multiple preset values ​​preset in the detection module, select the preset value with the smallest difference from the deviation value, and call the early warning signal corresponding to the preset value for sending.

[0010] Furthermore, it also includes:

[0011] The input module is used to receive the new deviation value and the corresponding new warning signal input by the user, and send the new deviation value and the corresponding new warning signal to the detection module. The detection module is also used to receive the new deviation value and the corresponding new warning signal, and put the new deviation value and the corresponding new warning signal into a preset numerical library.

[0012] Furthermore, the plurality of preset values ​​are deviations between the thermal efficiency calculated based on a plurality of boiler failures that have occurred and a predetermined value.

[0013] Furthermore, it also includes an early warning module for receiving early warning signals and displaying them to the user.

[0014] Furthermore, the method for calculating thermal efficiency is: thermal efficiency = rated boiler evaporation capacity * (steam enthalpy - feed water enthalpy) / fuel consumption * fuel low calorific value * 100%.

[0015] An early warning method for residential heating steam boilers, comprising:

[0016] Get the rated boiler evaporation capacity of the residential heating steam boiler,

[0017] Obtain the measured boiler fuel consumption and fuel low calorific value,

[0018] According to the rated boiler evaporation capacity, fuel consumption and fuel low calorific value, the thermal efficiency of the boiler is calculated.

[0019] When the thermal efficiency is lower than a preset value, the deviation between the thermal efficiency and the preset value is compared with a plurality of preset values, the preset value with the smallest difference from the deviation value is selected, and an early warning signal corresponding to the preset value is sent.

[0020] Furthermore, it also includes:

[0021] Receive the newly added deviation value and the corresponding newly added warning signal input by the user, and put the newly added deviation value and the corresponding newly added warning signal into the preset numerical value library.

[0022] The beneficial effects of the present invention are as follows: the present invention sets a detection module to compare the deviation value between the thermal efficiency and the predetermined value with the preset value within the period, obtains the preset value with the smallest difference, and sends a corresponding alarm signal, so that the staff can know the most likely cause of the fault at the first time and conduct manual investigation, thereby improving work efficiency and avoiding duplication of work. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Among them: 1. Retrieval module; 2. Acquisition module; 3. Processing module; 4. Detection module; 5. Input module; 6. Early warning module. DETAILED DESCRIPTION

[0025] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] The present invention discloses an early warning system for residential heating steam boilers, such as Figure 1 As shown, it includes a calling module 1, an acquisition module 2, a processing module 3, and a detection module 4. The calling module 1 is used to call the rated boiler evaporation capacity of the residential heating steam boiler and send the rated boiler evaporation capacity. The acquisition module 2 is used to obtain the boiler fuel consumption and the low calorific value of the fuel, and send the fuel consumption and the low calorific value of the fuel.

[0027] The processing module 3 is used to receive the rated boiler evaporation capacity, fuel consumption and fuel low calorific value, and calculate the thermal efficiency of the boiler. The method for calculating the thermal efficiency is:

[0028] Thermal efficiency = effective utilization of heat / total heat released by fuel * 100%

[0029] = boiler evaporation capacity * steam enthalpy - feed water enthalpy / fuel consumption * fuel low calorific value * 100%.

[0030] When the thermal efficiency is lower than the preset value, an alarm signal is sent. The detection module 4 is used to receive the alarm signal and compare the deviation between the thermal efficiency and the preset value with multiple preset values ​​preset in the detection module 4. The preset value with the smallest difference from the deviation value is selected, and the early warning signal corresponding to the preset value is called up and sent. The multiple preset values ​​are the deviations between the thermal efficiency and the preset value calculated based on the multiple failures of the boiler pipes that have occurred. In the process of calculating the thermal efficiency, the steam enthalpy and the feed water enthalpy are known by looking up the map, that is, the steam enthalpy and the feed water enthalpy are preset in the processing module 3.

[0031] In the actual heating process, steam boilers often experience reduced thermal efficiency, and the existing technology solves this problem through manual investigation. There is no system to analyze and predict the possible reduction in thermal efficiency, resulting in duplication of work and reduced work efficiency. After the processing module 3 of this system calculates the thermal efficiency of the boiler, the detection module 4 compares the deviation between the thermal efficiency and the predetermined value with multiple preset values ​​preset in the detection module 4. The multiple preset values ​​preset in the detection module 4 are the deviations between the thermal efficiency and the predetermined value calculated based on the multiple failures of the boiler pipes that have occurred. That is, the previous reduction in thermal efficiency, that is, the deviation between the thermal efficiency and the predetermined value is entered, and a corresponding early warning signal is set. When the boiler has a thermal efficiency reduction failure again, the possible corresponding reduction value and the corresponding early warning signal are retrieved, so that the staff can quickly find the cause of the failure and solve the failure.

[0032] The present invention also includes an input module 5, which is used to receive the newly added deviation value and the corresponding newly added warning signal input by the user, and send the newly added deviation value and the corresponding newly added warning signal to the detection module 4. The detection module 4 is also used to receive the newly added deviation value and the corresponding newly added warning signal, and put the newly added deviation value and the corresponding newly added warning signal into a preset numerical library. The newly added deviation value is a new additional deviation value relative to each deviation value, and is a deviation value that is not equal to other deviation values. The newly added warning signal is a signal corresponding to the newly added deviation value and different from the existing warning signal.

[0033] The present invention also includes an early warning module 6, which is used to receive early warning signals and display them to the user. When the staff finds that the fault is inconsistent with the early warning signal issued by the detection module 4 when solving the fault, the staff can manually input the new deviation value and the corresponding new early warning signal through the input module 5 to improve the detection module 4 again. Through continuous improvement, the accuracy of the early warning of the detection module 4 is improved.

[0034] During the operation of existing steam boilers, there is no early warning system to predict possible failures. Therefore, each time a failure occurs, each pipeline must be checked one by one, resulting in a great waste of resources and time. Because the on-duty personnel may be different each time a failure occurs, the location of the failure is only guessed manually, and there is no system to provide prompts and early warnings. In addition, there is no complete early warning system to alarm, which causes inconvenience in use.

[0035] The present invention sets a detection module 4 to compare the deviation value of the thermal efficiency from the predetermined value with the preset value preset therein, obtains the preset value with the smallest difference, and sends a corresponding alarm signal, so that the staff can know the most likely cause of the fault at the first time and conduct manual investigation, thereby improving work efficiency and avoiding duplication of work.

[0036] The present invention also discloses an early warning method for residential heating steam boilers, comprising:

[0037] Get the rated boiler evaporation capacity of the residential heating steam boiler,

[0038] Obtain the measured boiler fuel consumption and fuel low calorific value,

[0039] According to the rated boiler evaporation capacity, fuel consumption and fuel low calorific value, the thermal efficiency of the boiler is calculated.

[0040] When the thermal efficiency is lower than the preset value, the deviation between the thermal efficiency and the preset value is compared with a plurality of preset values, the preset value with the smallest difference from the deviation value is selected, and an early warning signal corresponding to the preset value is sent.

[0041] Receive the newly added deviation value and the corresponding newly added warning signal input by the user, and put the newly added deviation value and the corresponding newly added warning signal into the preset numerical value library.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An early warning system for residential heating steam boilers, characterized in that: include: The retrieval module (1) is used to retrieve the rated boiler evaporation capacity of the residential heating steam boiler and send the rated boiler evaporation capacity. The acquisition module (2) is used to obtain the measured boiler fuel consumption and fuel low calorific value, and send the fuel consumption and fuel low calorific value, The processing module (3) is used to receive the rated boiler evaporation capacity, fuel consumption and low calorific value of the fuel, and calculate the thermal efficiency of the boiler. When the thermal efficiency is lower than a predetermined value, an alarm signal is sent. The detection module (4) is used to receive the alarm signal, compare the deviation value between the thermal efficiency and the predetermined value with a plurality of preset values ​​preset in the detection module (4), select the preset value with the smallest difference from the deviation value, and retrieve and send the early warning signal corresponding to the preset value.

2. The early warning system for residential heating steam boilers according to claim 1, characterized in that: Also includes: The input module (5) is used to receive the newly added deviation value and the corresponding newly added warning signal input by the user, and send the newly added deviation value and the corresponding newly added warning signal to the detection module (4). The detection module (4) is also used to receive the newly added deviation value and the corresponding newly added warning signal, and put the newly added deviation value and the corresponding newly added warning signal into a preset numerical value library.

3. An early warning system for residential heating steam boilers according to claim 1 or 2, characterized in that: The plurality of preset values ​​are deviations between the thermal efficiency calculated based on a plurality of boiler failures that have occurred and a predetermined value.

4. The early warning system for residential heating steam boilers according to claim 3 is characterized in that: It also includes an early warning module (6) for receiving early warning signals and displaying them to the user.

5. The early warning system for residential heating steam boilers according to claim 4, characterized in that: The method for calculating the thermal efficiency is: thermal efficiency = rated boiler evaporation capacity * (steam enthalpy - feed water enthalpy) / fuel consumption * fuel low calorific value * 100%.

6. An early warning method for residential heating steam boilers, characterized in that: include: Get the rated boiler evaporation capacity of the residential heating steam boiler, Obtain the measured boiler fuel consumption and fuel low calorific value, According to the rated boiler evaporation capacity, fuel consumption and fuel low calorific value, the thermal efficiency of the boiler is calculated. When the thermal efficiency is lower than a preset value, the deviation between the thermal efficiency and the preset value is compared with a plurality of preset values, the preset value with the smallest difference from the deviation value is selected, and an early warning signal corresponding to the preset value is sent.

7. The early warning method for residential heating steam boilers according to claim 6, characterized in that: Also includes: Receive the newly added deviation value and the corresponding newly added warning signal input by the user, and put the newly added deviation value and the corresponding newly added warning signal into the preset value library.

Images