Energy-saving debugging and calibration equipment

Abstract

Disclosed is an energy-saving debugging and calibration device, comprising: an installation part for installing a gas water heater; the gas water heater has a control interface electrically connected to a gas water heater controller and a gas interface of the gas water heater; the gas interface of the gas water heater is connected to a gas proportional valve; the gas proportional valve is electrically connected to the gas water heater controller; a gas supply pipeline connected to the gas interface of the gas water heater, on which a gas pressure regulating valve is provided; a connecting pipe connected to a secondary pressure interface of the gas proportional valve, the connecting pipe also being connected to a pressure sensor; an equipment station controller electrically connected to the pressure sensor, the equipment station controller being detachably electrically connected to the control interface, and being able to send a control signal to the gas water heater controller according to the secondary pressure measured by the pressure sensor, and to control the opening of the gas proportional valve under a target state by means of the gas water heater controller.

Description

Technical Field

[0001] The present invention relates to the field of energy-saving equipment, and in particular to energy-saving debugging and calibration equipment. Background Art

[0002] Gas water heaters or wall-mounted boilers need to be calibrated for performance parameters before leaving the factory, including rated load, ignition load, flame transfer load, minimum load, etc. The commonly used method in the industry is to manually adjust the current parameters of the gas proportional valve, and then adjust it based on the gas flow meter or secondary pressure of the equipment as feedback. The application of this solution has the following disadvantages:

[0003] 1. Manual adjustment is slow, inefficient, takes a long time to test, and consumes a lot of gas;

[0004] 2. The accuracy of parameter adjustment is affected by subjective factors of personnel and consistency cannot be guaranteed;

[0005] 3. It is impossible to detect the flame status and burner malfunction.

[0006] 4. Manual observation takes a long time, consumes a lot of gas, and has a relatively poor energy-saving effect. Summary of the invention

[0007] In view of the above problems, an object of the present invention is to provide an energy-saving debugging and calibration device that can automatically determine and adjust the parameters of gas water heaters, shorten the debugging time, reduce the debugging gas consumption, and improve the energy-saving effect.

[0008] Another object of the present invention is to provide an energy-saving debugging and calibration device to enable online detection of the burner, improve the product qualification rate, shorten the debugging time, reduce the debugging gas consumption, and improve the energy-saving effect.

[0009] In order to achieve at least one of the above purposes, the present invention adopts the following technical solutions:

[0010] An energy-saving debugging and calibration device, comprising:

[0011] An installation part for installing a gas water heater; the gas water heater has a control interface electrically connected to a gas water heater controller and a gas interface of the gas water heater; the gas interface of the gas water heater is connected to a gas proportional valve; the gas proportional valve is electrically connected to the gas water heater controller;

[0012] A gas supply pipeline for communicating with the gas interface of the gas water heater, on which a gas pressure regulating valve is provided;

[0013] A connecting pipe for connecting to the secondary pressure interface of the gas proportional valve, wherein the connecting pipe is also connected to a pressure sensor;

[0014] An equipment station controller electrically connected to the pressure sensor, the equipment station controller can be detachably electrically connected to the control interface, and can send a control signal to the gas water heating equipment controller according to the secondary pressure measured by the pressure sensor, and control the opening of the gas proportional valve under the target state through the gas water heating equipment controller.

[0015] As a preferred aspect of the present invention, the energy-saving debugging and calibration equipment has a memory electrically connected to the equipment station controller, and the memory stores the correspondence between different combustion states and secondary pressure sizes of different models of gas water heaters, and the correspondence includes: the secondary pressure size of the gas water heater in the ignition state, minimum fire state, maximum fire state and fire transmission state.

[0016] As a preferred aspect of the present invention, the equipment station controller is electrically connected to the control interface, and can obtain the model of the currently installed gas water heater, and obtain the corresponding relationship between its combustion state and secondary pressure according to the matching of the gas water heater model;

[0017] As a preferred aspect of the present invention, the equipment station controller is electrically connected to a display panel; the display panel can display the gas supply pressure of the gas supply pipeline, the secondary pressure detected by the pressure sensor, and the water temperature of the gas water heater.

[0018] As a preferred aspect of the present invention, the equipment station controller can control the gas water heater equipment controller to adjust the gas proportional valve current when the secondary pressure detected by the pressure sensor is not equal to the secondary pressure in the corresponding relationship.

[0019] As a preferred aspect of the present invention, the connecting pipe is a silicone hose.

[0020] As a preferred aspect of the present invention, the gas supply pipeline is provided with a manual ball valve and a gas filter connected in series upstream of the gas pressure regulating valve, and a gas flow meter, a temperature probe and a pipeline gas pressure sensor connected in series downstream of the gas pressure regulating valve; the gas supply pipeline is also connected in series with a pneumatic valve downstream of the pipeline gas pressure sensor.

[0021] As a preferred aspect of the present invention, the energy-saving debugging and calibration equipment is also provided with a flame detector electrically connected to the equipment station controller for detecting the combustion state of the burner of the gas water heater.

[0022] As a preferred aspect of the present invention, the burner of the gas water heater has three or more rows of fire bars arranged in parallel and is provided with flame identification holes; the flame detector is located outside the gas water heater to capture images of the flame identification holes; and the equipment station controller determines the combustion state of the burner based on the captured image.

[0023] As a preferred aspect of the present invention, the equipment station controller can convert the captured image into a black and white detection image, and identify whether there are white spots in the internal area of ​​the flame identification hole, and determine that the flame is in a full row state when the white spots are greater than 300 pixels.

[0024] As a preferred aspect of the present invention, the equipment station controller can identify the flame RGB pixel area value of the internal area of ​​the flame identification hole, and judge whether the burner is in a full-row state, a flame-away state, or a non-flame state based on the flame RGB pixel area value.

[0025] As a preferred aspect of the present invention, the equipment station controller can identify a flame RGB pixel point for any pixel point within the internal area of ​​the flame identification hole, and the identification rule is: when the RGB value of the pixel point is within a predetermined RGB threshold range, the pixel point is determined to be a flame RGB pixel point.

[0026] As a preferred aspect of the present invention, the flame RGB pixel area value is the number of flame RGB pixels.

[0027] As a preferred aspect of the present invention, the equipment station controller can determine that the burner is in a full row state when the number of flame RGB pixels is above 300.

[0028] As a preferred aspect of the present invention, the predetermined RGB threshold range is 57≤R≤73; 27≤G≤41; 3≤B≤15.

[0029] Beneficial effects:

[0030] The energy-saving debugging and calibration equipment of the present application uses a pressure sensor connected to a gas proportional valve as feedback. The energy-saving debugging and calibration equipment and the machine (gas water heating equipment) transmit data to form a linkage adjustment, thereby realizing automatic judgment and automatic adjustment. The calibration efficiency is high while the accuracy is high, the debugging time is shortened, and the energy-saving effect is very obvious.

[0031] With reference to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents.

[0032] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0033] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 It is a schematic diagram of pipeline connections of energy-saving debugging and calibration equipment provided by an embodiment of the present invention.

[0036] Figure 2 yes Figure 1 Schematic diagram of the structure.

[0037] Figure 3 yes Figure 2 Another view of .

[0038] Figure 4 yes Figure 2 Images captured by a CCD camera.

[0039] Figure 5 Yes Figure 4 The target area image is captured and the flame status description diagram is identified. DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. 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 creative work should fall within the scope of protection of the present invention.

[0041] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0043] See also Figures 1 to 3 An embodiment of the present invention provides an energy-saving debugging and calibration device 100, comprising: a mounting portion for mounting a gas water heater 200; a gas supply pipeline 160 for communicating with the gas interface of the gas water heater 200, a connecting pipe for communicating with the secondary pressure interface of the gas proportional valve, and a device controller electrically connected to the pressure sensor. The gas water heater 200 is a gas water heater or a gas water boiler.

[0044] The energy-saving debugging and calibration device 100 has a device housing 110, and the mounting portion is a mounting frame arranged on the device housing 110. The gas water heater 200 is detachably mounted on the mounting frame of the energy-saving debugging and calibration device 100. The energy-saving debugging and calibration device 100 is arranged on the mounting frame near the upper end of the device housing 110. The device station controller is electrically connected to a display panel 101 (display screen). The display panel 101 is on one side of the energy-saving debugging and calibration device 100, and is used to display parameter information monitored by various sensors of the energy-saving debugging and calibration device 100 and parameter information monitored by various sensors of the gas water heater 200.

[0045] In this embodiment, the gas water heater 200 has a gas interface for the gas water heater and a control interface electrically connected to the gas water heater controller. The gas interface for the gas water heater is used to access an external gas pipeline to input gas. The gas interface for the gas water heater is connected to a gas proportional valve. The gas proportional valve is electrically connected to the gas water heater controller. The control interface can be connected to a control input module and a display screen of the gas water heater 200 in the gas water heater 200. The user can input adjustment instructions to the gas water heater 200 with the help of a control input module such as a knob, a button, or a touch screen. The display screen is used to display parameter information of the gas water heater 200 such as water temperature and water pressure.

[0046] According to the above description, a gas pressure regulating valve is provided on the gas supply pipeline 160. The connecting pipe is also connected to a pressure sensor; the pressure sensor can measure the secondary pressure of the gas proportional valve of the gas water heater 200. The connecting pipe is a (secondary pressure) silicone hose. The pressure sensor and the gas proportional valve are connected to the two ends of the connecting pipe respectively, wherein the connecting pipe and the secondary pressure interface of the gas proportional valve are detachably connected, and then the secondary pressure can be measured by assembling and disassembling different gas water heaters 200.

[0047] In this embodiment, the equipment station controller can be detachably electrically connected to the control interface, and it can send a control signal to the gas water heater equipment controller according to the secondary pressure measured by the pressure sensor, and control the opening of the gas proportional valve under the target state through the gas water heater equipment controller.

[0048] The equipment station controller can be electrically connected to the control interface of the gas water heater 200 by means of a cable plug-in. For example, the control interface (eg Figure 1 The water heater control panel interface in the equipment station is designed as a female port, and one end of the connection cable of the equipment station controller through the equipment station control protocol interface is designed as a male port. The two are plugged in and out to realize the electrical connection between the equipment station controller and the control interface. Through the control interface, the equipment station controller can know the model of the gas water heater 200 and the operating parameters of the gas water heater 200 such as the outlet water temperature and water flow rate monitored by the various sensors of the gas water heater 200, and control the gas water heater through the control interface by means of the gas water heater controller. In this embodiment, the equipment station controller controls the current of the gas proportional valve of the gas water heater 200 through the control interface, and then controls the opening of the gas proportional valve under different states, realizes the automatic calibration of the gas water heater 200, and achieves the purpose of gas energy saving.

[0049] In this embodiment, in order to realize the automatic calibration of the secondary pressure of different types of gas water heaters 200, the energy-saving debugging and calibration device 100 has a memory electrically connected to the equipment station controller, and the memory stores the corresponding relationship between different combustion states and secondary pressure of different types of gas water heaters 200. The corresponding relationship includes: the secondary pressure of the gas water heater in the ignition state, the minimum fire state, the maximum fire state and the fire transmission state.

[0050] Among them, the equipment station controller is electrically connected to the control interface, and can obtain the model of the currently installed gas water heater 200, and obtain the corresponding relationship between its combustion state and (target) secondary pressure according to the model of the gas water heater 200. In this way, there is no need to manually input the model of the gas water heater 200 for retrieval and matching. After the gas water heater 200 to be calibrated is installed on the energy-saving debugging and calibration device 100 and turned on, the equipment station controller automatically obtains the model of the gas water heater 200 through the control interface, and matches the corresponding secondary pressure corresponding to the different combustion states in the corresponding relationship stored in the memory, and then controls the ignition and combustion through the control interface, obtains the actual secondary pressure under different states, and makes adjustments after comparing the actual secondary pressure with the target secondary pressure.

[0051] Taking models A, B, and C as an example, the corresponding relationship stored in the memory is shown in the following table:

[0052]

[0053] Among them, the secondary pressures X1~X12 can be fixed values ​​or range values, and the present invention is not limited thereto. Moreover, since the secondary pressures of gas water heaters 200 of different powers and models are different, no specific numerical examples are given here.

[0054] The display panel 101 can display the gas supply pressure of the gas supply pipeline 160, the secondary pressure detected by the pressure sensor, and the water temperature of the gas water heater 200. The equipment station controller can control the gas water heater controller to adjust the gas proportional valve current when the secondary pressure detected by the pressure sensor is not equal to the secondary pressure in the corresponding relationship.

[0055] For example, when testing the gas water heater 200 of model A, the rated load secondary pressure of the gas water heater 200 (the target secondary pressure under the maximum fire state) is 1000±20Pa, the target secondary pressure under the ignition state is 330±20Pa, the minimum load (the target secondary pressure under the minimum fire state) is 150±20Pa, and the target secondary pressure under the fire transmission state is 380±20Pa; the actual secondary pressure of the gas water heater 200 detected by the pressure sensor under the ignition state is 280Pa, and the actual secondary pressure is less than the target secondary pressure of 330±20Pa after comparison. At this time, the equipment station controller sends a signal command to increase the current of the gas proportional valve to the gas water heater controller through the control interface. The gas water heater 200 increases the input current of the gas proportional valve through the command, and then increases the opening of the gas proportional valve, and increases the secondary pressure under the ignition state until it reaches the target secondary pressure under the ignition state. At this time, PID control can be used to adjust the secondary pressure to accurately reach 30±20Pa, so as to achieve accurate automatic adjustment of the secondary pressure.

[0056] It can be understood that other combustion states can be adjusted accordingly by referring to this adjustment method, and will not be described in detail here.

[0057] In this embodiment, if Figure 1 As shown, the gas supply pipeline 160 ( Figure 1 A manual ball valve (e.g., a gas pipeline) is provided in series with the gas pressure regulating valve upstream. Figure 1 The gas supply pipeline 160 is provided with a gas flow meter, a temperature probe and a pipeline gas pressure sensor connected in series downstream of the gas pressure regulating valve. The gas supply pipeline 160 is also connected in series with a pneumatic valve downstream of the pipeline gas pressure sensor. The gas filter is used to filter and clean the supplied gas. The gas flow meter is used to measure the gas flow of the gas supply pipeline 160, and the temperature probe is used to measure the gas temperature of the gas supply pipeline 160, which can be Figure 1 Temperature probe PT100.

[0058] The pneumatic valve is located at the most downstream of the gas supply pipeline 160. An intermediate ball valve (e.g. Figure 1 The intermediate ball valve is connected to the downstream of the gas filter and the upstream of the gas regulating valve. The gas filter can be repaired or replaced through the intermediate ball valve and the manual ball valve. The gas supply pipeline 160 is also connected to a pressure gauge upstream of the gas pressure regulating valve. The pressure gauge adopts a U-type pressure gauge to measure the gas source pressure. The gas flow meter, temperature probe, and pipeline gas pressure sensor are connected between the gas pressure regulating valve and the pneumatic valve.

[0059] The pipeline gas pressure sensor is used to measure the gas supply pressure (primary pressure) of the gas supply pipeline 160. The gas pressure regulating valve is used to adjust the gas supply pressure of the gas supply pipeline 160. In order to ensure the accurate measurement of the pipeline gas pressure sensor and avoid errors caused by damage, a mechanical pressure gauge (U-type pressure gauge) is also connected in series to the gas supply pipeline 160. The mechanical pressure gauge can directly reflect the current pressure value, and then compare it with the pipeline gas pressure sensor to ensure the accurate measurement of the primary pressure.

[0060] The energy-saving debugging and calibration device 100 also has a water inlet pipeline 150 and a water outlet pipeline 170. The water inlet pipeline 150 is used to connect the water inlet of the gas water heater 200 (for example Figure 1 The water outlet pipe 170 is used to connect the water outlet of the gas water heater 200 (for example Figure 1The water inlet pipe 150 can provide different water supply flow rates for different working modes of the gas water heater 200. The working modes may include: a test working mode and a normal working mode. Among them, the device controller of the energy-saving debugging and calibration device 100 can control the water inlet pipe 150 to have different water flow rates in the test working mode and the normal working mode. In the test working mode, the energy-saving debugging and calibration device 100 can change the different combustion states of the gas water heater 200 to calibrate the gas proportional valve opening under different combustion states.

[0061] For example, in the test working mode, the device controller controls the water flow rate of the water inlet pipe 150 to be 10L±1L / min; in the normal working mode, the device controller controls the water flow rate of the water inlet pipe 150 to be 6L±1L / min, to correspond to the working condition of the water heater under normal use by the user, and cooperates with the outlet water temperature to detect whether the water heater is working normally.

[0062] Specifically, the water inlet pipe 150 is connected in series with a water inlet ball valve (for example Figure 1 6-point ball valve in the water), water inlet pressure regulating valve, water supply flow regulating valve, water inlet electric control valve, and water supply pressure sensor. Among them, the water inlet ball valve is a manual valve, which can be opened when the energy-saving debugging and calibration equipment 100 is turned on. It is located at the upstream of the water supply pipeline 150. The water inlet pressure regulating valve is used to adjust the water inlet pressure. To facilitate the measurement of the water inlet pressure, the water inlet pipeline 150 is also connected with a pressure gauge and a water inlet pressure sensor between the water inlet pressure regulating valve and the flow regulating valve. The water inlet pressure sensor measures the water inlet pressure and displays the water inlet pressure in real time by providing a pressure gauge. The water supply pressure sensor measures the water supply pressure and displays the water supply pressure in real time by providing a pressure gauge.

[0063] The water inlet pipeline 150 is also connected in series with a water inlet filter (for example, Figure 1 The 6-point water filter in the water inlet filter is used to filter the incoming water, and an exhaust valve is connected to the downstream of the water inlet filter to discharge the filtered gas to avoid supplying bubbles to the downstream and causing cavitation to the water pump of the gas water heater 200. The water inlet pipeline 150 is also connected to an electromagnetic flowmeter and a temperature probe (for example, Figure 1 The temperature probe PT100 is used to measure the water flow and water temperature respectively. The water inlet pressure regulating valve, water supply flow regulating valve and water inlet electric control valve (such as Figure 1 The 4-point angle seat valve in the gas water heater 200 is electrically connected to the equipment station controller, and the equipment station controller controls the water inlet pressure regulating valve, the water supply flow regulating valve and the water inlet electric control valve according to the working mode of the gas water heater 200 to provide different water supply pressures and water supply flows for different working modes of the gas water heater 200.

[0064] The outlet water pipe 170 is provided with an outlet water temperature probe (e.g. Figure 1 temperature probe PT100) and the water outlet electric control valve (such as Figure 1 4-point angle seat valve in the gas water heater 200). The outlet water temperature probe and the outlet water electric control valve are electrically connected to the equipment station controller. The outlet water electric control valve is used to open or close the outlet water pipeline 170. The outlet water temperature probe is used to measure the outlet water temperature. The equipment station controller compares the outlet water temperature with the outlet water temperature of the gas water heater 200 to determine whether the outlet water temperature of the gas water heater 200 is normal, and then determines whether the operating state of the gas water heater 200 is normal.

[0065] In this embodiment, the pneumatic valve is electrically connected to the equipment station controller, and the equipment station controller can control the start and close of the pneumatic valve. When the gas water heater 200 needs to be batch calibrated at startup, the manual ball valve is opened manually, and when ignition is required to supply gas, the gas supply pipeline 160 is opened through the pneumatic valve to supply gas to the gas water heater 200, and after the calibration is completed, the pneumatic valve is controlled to close, stop supplying gas to the gas water heater 200, replace a new gas water heater 200, and then control the opening and closing of the pneumatic valve to realize automatic control of the gas supply of the gas water heater 200.

[0066] The energy-saving debugging and calibration device 100 of this embodiment uses the pressure sensor connected to the gas proportional valve as feedback. The energy-saving debugging and calibration device 100 and the machine (gas water heater 200) transmit data to form a linkage adjustment, thereby realizing automatic judgment and automatic adjustment. The calibration efficiency is high while the accuracy is high, the debugging time is shortened, and the energy-saving effect is very obvious.

[0067] The following is a data table showing the time taken to actually test a certain model of gas water heater in this embodiment and compare it with the time taken to perform the existing manual calibration:

[0068]

[0069] As can be seen from the table above, it takes 86 seconds to manually calibrate a single gas water heater, and the gas consumption reaches 42L (per unit). However, it only takes 41 seconds to automatically calibrate a single gas water heater using the energy-saving debugging and calibration device 100 of this embodiment, and the gas consumption per unit is reduced to 20L. Based on the calibration volume of 10,000 water heaters per day, the gas consumption can be saved by 200m per day. 3 , if we calculate based on 300 days a year, we can save 60,000m 3 / year gas volume.

[0070] Therefore, it can be seen that the energy-saving debugging and calibration device 100 of this embodiment can greatly shorten the calibration time, has high adjustment efficiency, significantly reduces the gas consumption during the calibration process, and has a significant energy-saving effect. In addition, the parameter adjustment accuracy of the gas water heater 200 is not affected by subjective factors of personnel, effectively ensuring the calibration consistency of each device.

[0071] In one embodiment of the present application, Figures 2 to 5 As shown, the energy-saving debugging and calibration device 100 is also provided with a flame detector 500 electrically connected to the device station controller, which is used to detect the combustion state of the burner of the gas water heater 200. The energy-saving debugging and calibration device 100 of this embodiment can detect the flame state by providing the flame detector 500, and then detect the burner malfunction, thereby realizing the automatic detection of the burner malfunction.

[0072] The burner of the gas water heater 200 has three or more rows of fire bars arranged in parallel and is provided with a flame identification hole. The inner diameter of the flame identification hole is between 15 mm and 25 mm. Preferably, the inner diameter of the flame identification hole is between 20 mm ± 2 mm. The flame detector 500 is located outside the gas water heater 200 to capture an image of the flame identification hole. It can be a camera (such as a CCD camera). The flame detector 500 is connected to the upper end of the energy-saving debugging and calibration device 100 through the connecting suspension 190, and is aligned with the flame identification hole to capture the target area image. The flame identification hole is located in the target area.

[0073] The equipment station controller determines the combustion state of the burner according to the captured image. The number of fire rows of the burner is generally more than 5 rows. The flame identification hole is located more than 0.5 mm from the top surface (210) of the fire row. In this embodiment, the flame identification hole is above the fire row, and the center of the flame identification hole is 10 mm ± 3 mm away from the fire row.

[0074] Among them, the top surface 210 of the fire bar of the burner is close to the lower edge of the flame identification hole. The number of flame identification holes can be one or two. Among the multiple fire bars, the fire bar close to the ignition needle 230 is the first fire bar, and the fire bar far away from the ignition needle 230 is the last fire bar, and one of the flame identification holes is aligned above the last fire bar. In the embodiment of two flame identification holes, one flame identification hole is aligned above the first fire bar, and the other flame identification hole is aligned above the last fire bar. At this time, there can be two flame detectors 500, and they correspond to the flame identification holes one by one, or the connecting suspension 190 of the flame detector 500 can be rotatably connected to the upper end of the energy-saving debugging and calibration equipment 100.

[0075] In order to realize automatic shooting detection, the connecting suspension 190 of the flame detector 500 is controllably rotatably connected to the upper end of the energy-saving debugging and calibration device 100 to switch between the shooting positions corresponding to the two flame identification holes. Specifically, the energy-saving debugging and calibration device 100 may be provided with a driving motor and directly or indirectly rotate one end 195 of the connecting suspension 190 through the corresponding gear meshing, so that it forms a fan-shaped swing for the flame detector 500, and then switches between the shooting positions corresponding to the two flame identification holes. The flame detector 500 shoots the first flame image after ignition at the flame identification hole corresponding to the first fire row, and then moves to the flame identification hole corresponding to the last fire row to shoot the second flame image, accurately identifies whether the ignition is successful based on the first flame image, and identifies whether the fire transmission is successful based on the second flame image.

[0076] Of course, in the case of a single flame identification hole, the image is taken according to the flame identification hole corresponding to the last fire row (such as Figure 4 The comparison of multiple images under the double flame recognition hole can more accurately determine the state of the burner and the problems caused. For example, if the ignition is successful, the ignition must be successful, and if the ignition is unsuccessful, the ignition is generally unsuccessful. The comparison of multiple images under the double flame recognition hole can more accurately determine the state of the burner and the problems caused. For example, if the ignition is successful, the ignition is still unsuccessful.

[0077] In this embodiment, the equipment station controller can intercept the target area image from the image captured by the flame detector 500, and the flame identification hole is located in the intercepted target area image. Of course, the flame identification hole occupies most of the area of ​​the intercepted target area image, such as Figure 4 , Figure 5 As shown, the equipment station controller selects and intercepts the rectangular selection area of ​​the intercepted target area image near the edge of the flame identification hole. The equipment station controller then identifies the flame state of the intercepted target area image, so that the interference caused by the non-target area in the original image can be eliminated, thereby improving the recognition accuracy. In the intercepted target area image, the flame color can be clearly distinguished from the colors of other areas, and there is less noise information. The image captured by the flame detector 500 is a bitmap, or the equipment station controller processes the image captured by the flame detector 500 or the intercepted target area image into a bitmap to facilitate pixel comparison.

[0078] Specifically, the equipment station controller can identify the flame RGB pixel area value of the internal area of ​​the flame identification hole, and judge whether the burner is in a full-row state, a flame-off state, or a non-flame state according to the flame RGB pixel area value. As can be seen from the above, the equipment station controller recognizes the flame RGB pixel area value of the internal area of ​​the flame identification hole by identifying the flame RGB pixel area value of the intercepted target area image.

[0079] The equipment station controller can identify flame RGB pixels for any pixel within the internal area of ​​the flame identification hole (fire viewing hole), and the identification rule is: when the RGB value of the pixel is within the predetermined RGB threshold range, the pixel is determined to be a flame RGB pixel. The flame RGB pixel area value is the number of flame RGB pixels. The predetermined RGB threshold range is 57≤R≤73; 27≤G≤41; 3≤B≤15.

[0080] The equipment station controller can confirm that the burner is in a full-row state when the number of flame RGB pixels is above 300. The equipment station controller can confirm that the burner is in a flame-off state when the number of flame RGB pixels is below 300 and above 50. The equipment station controller can confirm that the burner is in a non-flame state when the number of flame RGB pixels is below 50. In the flame-off state and the non-flame state, the equipment station controller sends a status prompt signal (alarm signal) through the alarm leaf connected to it, thereby prompting the operator to conduct a targeted inspection of the gas water heater 200, and can provide auxiliary guidance for the operator's inspection, thereby reducing the operator's time to troubleshoot problems and improving maintenance efficiency.

[0081] In another feasible embodiment, the equipment station controller can convert the captured image or the above-mentioned intercepted target area image into a black and white detection image, and identify whether there are white spots in the internal area of ​​the flame identification hole, and determine that the flame is in a full-row state when the white spots are greater than 300 pixels. The equipment station controller converts the captured image into a black and white detection image by a binary method. In this embodiment, it can be determined whether the burner is abnormal by determining whether the flame is in a full-row state. When the burner is in a full-row state, the burner is in a normal combustion state, and when the burner is in a non-full-row state, the burner is in an abnormal combustion state, and the equipment station controller can send an alarm signal through an alarm single leaf connected to it.

[0082] In the present application, the equipment station controller can be implemented in any appropriate manner. Specifically, for example, the equipment station controller can take the form of a microprocessor or processor and a computer-readable medium storing a computer-readable program code (such as software or firmware) that can be executed by the microprocessor or processor, a logic gate, a switch, an application-specific integrated circuit (ASIC), a programmable logic controller (PLC), and an embedded microcontroller unit (MCU). Examples of the above modules include but are not limited to the following microcontroller units: ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20, and Silicone Labs C8051F320. Those skilled in the art should also know that in addition to implementing the functions of the equipment station controller in a purely computer-readable program code manner, it is entirely possible to implement the same functions by logically programming the method steps so that the control unit can be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontroller units.

[0083] Any numerical value cited herein includes all values ​​of lower and upper values ​​that increase by one unit from the lower limit to the upper limit, and there is at least a two-unit interval between any lower value and any higher value. For example, if the value of the quantity of a component or a process variable (such as temperature, pressure, time, etc.) is set forth to be from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in the specification. For values ​​less than 1, one unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples that are intended to be clearly expressed, and it can be considered that all possible combinations of numerical values ​​listed between the lowest value and the highest value are clearly set forth in the specification in a similar manner.

[0084] It should be understood that the above description is for illustration and not for limitation. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents possessed by such claims. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to be a waiver of the subject matter, nor should it be considered that the inventors did not consider the subject matter to be part of the disclosed inventive subject matter.

Claims

1. An energy-saving debugging and calibration device, characterized in that: include: An installation part for installing a gas water heater; the gas water heater has a control interface electrically connected to a gas water heater controller and a gas interface of the gas water heater; The gas interface of the gas water heater is connected to a gas proportional valve; the gas proportional valve is electrically connected to the gas water heater controller; A gas supply pipeline for communicating with the gas interface of the gas water heater, on which a gas pressure regulating valve is provided; A connecting pipe for connecting to the secondary pressure interface of the gas proportional valve, wherein the connecting pipe is also connected to a pressure sensor; An equipment station controller electrically connected to the pressure sensor, the equipment station controller being detachably electrically connected to the control interface, capable of sending a control signal to the gas water heater equipment controller according to the secondary pressure measured by the pressure sensor, and controlling the opening of the gas proportional valve under a target state through the gas water heater equipment controller; The energy-saving debugging and calibration equipment is also provided with a flame detector electrically connected to the equipment station controller, for detecting the combustion state of the burner of the gas water heater; The burner of the gas water heater has three or more rows of fire bars arranged in parallel and is provided with flame identification holes; the flame detector is located outside the gas water heater and takes images of the flame identification holes; the equipment station controller determines the combustion state of the burner according to the taken images; The connection suspension of the flame detector is controllably rotatably connected to the upper end of the energy-saving debugging and calibration device to switch between the shooting positions corresponding to the two flame identification holes. The flame detector shoots the first flame image after ignition at the flame identification hole corresponding to the first fire row, and then moves to the flame identification hole corresponding to the last fire row to shoot the second flame image. The equipment station controller can identify the flame RGB pixel area value of the internal area of ​​the flame identification hole, and judge whether the burner is in a full-row state, a flame-off state, or a non-flame state according to the flame RGB pixel area value; The equipment station controller can identify any pixel point in the internal area of ​​the flame identification hole as a flame RGB pixel point; the identification rule is: when the RGB value of the pixel point is within a predetermined RGB threshold range, the pixel point is determined to be a flame RGB pixel point; The predetermined RGB threshold range is 57≤R≤73; 27≤G≤41; 3≤B≤15; and the flame RGB pixel area value is the number of flame RGB pixels.

2. The energy-saving debugging and calibration device according to claim 1, characterized in that: The energy-saving debugging and calibration equipment has a memory electrically connected to the equipment station controller, and the memory stores the corresponding relationship between different combustion states and secondary pressure sizes of different models of gas water heaters. The corresponding relationship includes: the secondary pressure size of the gas water heater in the ignition state, minimum fire state, maximum fire state and fire transmission state.

3. The energy-saving debugging and calibration device according to claim 1, characterized in that: The equipment station controller is electrically connected to the control interface, and can obtain the model of the currently installed gas water heater equipment, and obtain the corresponding relationship between its combustion state and secondary pressure according to the matching of the gas water heater equipment model.

4. The energy-saving debugging and calibration device according to claim 1, characterized in that: The equipment station controller is electrically connected to a display panel; the display panel can display the gas supply pressure of the gas supply pipeline, the secondary pressure detected by the pressure sensor, and the water temperature of the gas water heater.

5. The energy-saving debugging and calibration device according to claim 1, characterized in that: The equipment station controller can control the gas water heater equipment controller to adjust the gas proportional valve current when the secondary pressure detected by the pressure sensor is not equal to the secondary pressure in the corresponding relationship.

6. The energy-saving debugging and calibration device according to claim 1, characterized in that: The connecting pipe is a silicone hose.

7. The energy-saving debugging and calibration device according to claim 1, characterized in that: The gas supply pipeline is provided with a manual ball valve and a gas filter connected in series upstream of the gas pressure regulating valve, and a gas flow meter, a temperature probe and a pipeline gas pressure sensor connected in series downstream of the gas pressure regulating valve; the gas supply pipeline is also connected in series with a pneumatic valve downstream of the pipeline gas pressure sensor.

8. The energy-saving debugging and calibration device according to claim 1, characterized in that: The equipment station controller can convert the captured image into a black and white detection image, and identify whether there are white spots in the inner area of ​​the flame identification hole, and determine that the flame is in a full row state when the white spots are greater than 300 pixels.

9. The energy-saving debugging and calibration device according to claim 1, characterized in that: The equipment station controller can determine that the burner is in a full row state when the number of flame RGB pixels is greater than 300.

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