TWI804316B - Smart boiler structure that can monitor temperature and combustion ratio - Google Patents

Abstract

The present invention is an intelligent boiler structure capable of monitoring temperature and combustion ratio, comprising: a boiler body, a burner, a fuel pipe, a control valve, a blower, an air volume controller, a control unit, a flame detector and A digital conversion unit, a combustion space is formed inside the boiler body, the burner is arranged in the combustion space, the fuel pipe provides fluid fuel to flow to the burner, and the control valve is arranged on the fuel pipe to control The flow rate of the fluid fuel is provided to ignite to generate a primary fire and a first-stage firepower, the blower provides air to enter the combustion space, the air volume controller is used to control the air intake volume, the control unit provides control for the control valve, the air volume controller and shutdown, the flame detector is used to detect and obtain the information of the parent fire and the first section of fire, the information can be flame color, ultraviolet wavelength or ion signal, and the digital conversion unit is used to convert the information into The detection number is used as a judgment basis to provide the control unit to automatically adjust the air flow entering the combustion space; thereby, more humane, less manpower, more reliable and safer benefits can be achieved.

Description

Smart boiler structure that can monitor temperature and combustion ratio

The invention relates to a boiler structure, especially a smart boiler structure capable of monitoring temperature and combustion ratio.

Boilers are used in electric power, machinery, metallurgy, chemical industry, textile, papermaking, food and other industries. The boiler uses combustible fluid such as gas or fuel oil to spray into a boiler body and ignites it. When the combustible fluid burns, it must be matched with combustible fluid. Efficient combustion can be achieved only when an equal proportion of air enters the boiler body. At present, the way that the combustible fluid enters the boiler body and the air enters the boiler body is calculated in advance, and the size of the damper is controlled to switch into the boiler body. air flow.

However, under normal circumstances, the oxygen content in the air is about 21%, but due to environmental pollution, such as industrial and automobile exhaust emissions, the loss of oxygen in the air will cause the oxygen content in the air to change. In some cities with severe air pollution, the oxygen content in the air is even as low as 12% to 13%. Therefore, when the air enters the boiler body, if the ratio of the amount of oxygen in the air to the combustible fluid is incorrect, when the amount of oxygen in the air is more than that of the combustible fluid, there will be a problem of poor combustion efficiency. When the amount is measured, the combustible fluid cannot be completely combusted and will accumulate in the boiler. When it accumulates to a certain range, if it is not found and corrected in time, it will eventually cause the boiler to explode, which is highly dangerous.

In view of the above-mentioned shortcoming of the conventional boiler, the present inventor finally releases the present invention after many discussions and sample tests, and several revisions and improvements with the idea of thinking and creation.

The present invention provides a smart boiler structure capable of monitoring temperature and combustion ratio, comprising: a boiler body with a combustion space formed inside, and a chimney communicating with the combustion space, and the chimney is used to discharge the combustion space The exhaust gas produced; a burner, located in the combustion space, the burner is provided with a burner; a fuel pipe, one end connected to a fluid fuel source, the other end connected to the burner, to provide fluid fuel from the fluid fuel source to the burner for the burner to ignite the fire; a control valve is arranged on the fuel pipe to control the flow of fluid fuel flowing through the fuel pipe to the burner, so that the fluid fuel flows from the burner burner flow out, and can be ignited at the burner head to generate a mother fire, and can be ignited by the mother fire to generate a first stage of fire; a blower, connected to the boiler body, provides air to enter the combustion space of the boiler body, so that the air and The fluid fuel flowing out of the burner is uniformly mixed and burned; an air volume controller controls the air intake volume of the air blower entering the combustion space; a control unit provides control for the control valve and the air volume controller, and then controls the fluid fuel The flow rate and the air intake volume, and provide control shutdown; a flame detector, set on the boiler body, to detect and obtain the information of the main fire and the first stage of fire, the information can be flame color, Ultraviolet wavelength or ion signal; a digital conversion unit, used to receive the information obtained by the flame detector, and convert the information into a detection number, and use the detection number as a judgment basis to provide the control unit to automatically control the air volume control The device adjusts the air intake volume entering the combustion space. The primary fire has a set detection number of the lower limit of the primary fire, the first section of firepower has a set detection number of the first section of firepower lower limit and a set first section of firepower The detection number of the upper limit of firepower; and the control valve is connected with the signal of the control unit, the air volume controller is connected with the signal of the control unit, the flame detector is connected with the signal of the control unit, the digital conversion unit is connected with the signal of the control unit connect.

The main purpose of the smart boiler structure of the present invention that can monitor the temperature and combustion ratio is that when it is used, if the ratio of oxygen and fluid fuel in the air entering the combustion space through the blower is not correct, the information can be detected by the flame detector and converted into Detecting numbers, by comparing the detected numbers to maintain normal operation, stop reporting or automatically adjust the air flow into the combustion space, it is more humane, less manpower, more reliable and safer, and can be safely monitored in any place , more suitable for the realization of unmanned chemical plants.

For the rest, the preferred embodiments of the present invention will be described in detail in conjunction with the drawings as follows:

First of all, please refer to the first and second figures, the smart boiler structure of the present invention can monitor the temperature and combustion ratio, including: a boiler body 10, a burner 20, a fuel pipe 30, a control valve 40, A blower 50 , an air volume controller 60 , a control unit 70 , a flame detector 80 , a digital conversion unit 90 , a man-machine interface 100 and an exhaust detector 110 .

A combustion space 11 is formed inside the boiler body 10, a through hole 12 and a detection hole 13 communicating with the combustion space 11 are provided on the top, and a chimney 14 communicating with the combustion space 11 is provided on one side of the boiler body 10 , the chimney 14 is used to discharge the waste gas generated by the combustion space 11 .

The burner 20 is assembled in the combustion space 11 through the through hole 12 , the burner 20 is provided with a burner 21 , and an igniter 22 is provided beside the burner 21 .

One end of the fuel pipe 30 is connected to a fluid fuel source 31 (a gas barrel in this embodiment), and the other end is connected to the burner 20 to provide fluid fuel (gas in this embodiment) to flow from the fluid fuel source 31 to the combustion chamber. Device 20 is used for this burner 21 to ignite a fire.

The control valve 40 is arranged on the fuel pipe 30 to control the flow rate of the fluid fuel to the burner 20 through the fuel pipe 30, so that the fluid fuel flows out from the burner 21 of the burner 20 and can pass through the fuel pipe 30. The igniter 22 is ignited on the burner 21 to generate a primary fire, and can be ignited by the primary fire to generate a first stage of fire, a second stage of fire or a third stage of fire.

The blower 50 is connected to the through hole 12 of the boiler body 10 through an air pipe 51, communicates with the combustion space 11 of the boiler body 10, and provides air to enter the combustion space 11 of the boiler body 10 through the air pipe 51, so that the air and The fluid fuel flowing out from the burner head 21 is evenly mixed and burned.

The air volume controller 60 is arranged on the air pipe 51 close to the boiler body 10, the air volume controller 60 is provided with a damper 61, and the damper 61 is rotatably arranged in the air duct 51, by controlling the rotation of the damper 61 , can adjust the size of the air duct 51 for air to pass through, and control the air intake volume of the blower 50 into the combustion space 11 .

The control unit 70 controls the control valve 40 and the air volume controller 60 , thereby controlling the flow rate of the fluid fuel and the air intake volume, and providing control over shutdown.

The flame detector 80 is located on the detection hole 13 of the boiler body 10 and corresponds to the burner 21 side. The flame detector 80 can be a photoresistor, an ultraviolet detector or a temperature CCD (Charge Coupled Device: Charge Coupled Device), used to detect and obtain the information of the mother fire, the first stage of fire, the second stage of fire and the third stage of fire, the information can be flame color, ultraviolet wavelength or ion signal.

The digital conversion unit 90 is used to receive the information obtained by the flame detector 80, and convert the information into a detection number, and use the detection number as a judgment basis to provide the control unit 70 to automatically control the damper of the air volume controller 60 61 rotates, and adjusts the size of the passing space of the air duct 51, and then adjusts the air intake volume entering the combustion space 11. The mother fire has a set mother fire lower limit number T1 (this mother fire lower limit number T1 of the present embodiment is 550), The first section of firepower has a set first section of firepower lower limit number T2 (the first section of firepower lower limit number T2 in this embodiment is 551) and a first section of firepower upper limit number T3 set (the first section of firepower in this embodiment) The upper limit number T3 is 850), and this second section of firepower has a second section of firepower lower limit number T4 (this second section of firepower lower limit number T4 of the present embodiment is 851) and a second section of firepower upper limit number T5 of a setting (this Embodiment The upper limit number T5 of the second section of firepower is 1650, the third section of firepower has a set third section of firepower lower limit number T6 (in this embodiment, the third section of firepower lower limit number T6 is 1651) and a set third section of firepower Upper limit number T7 (this third section of firepower upper limit number T7 of the present embodiment is 2450).

The man-machine interface 100 is connected with the control unit 70 through the lower fire limit number T1, the first fire power lower limit number T2, the first fire power upper limit number T3, the second fire power lower limit number T4, the first fire power lower limit number T4 The second-stage firepower upper limit number T5, the third-stage firepower lower limit number T6 and the third-stage firepower upper limit number T7 provide user operations, monitoring boiler operation and shutdown reports, etc., which can be devices such as personal computers or smart phones.

The exhaust detector 110 is installed on the chimney 14 close to the boiler body 10 to detect the carbon monoxide content in the exhaust gas discharged from the chimney 14. When the carbon monoxide content exceeds the standard, the air volume controller 60 is automatically controlled. Rotate the damper 61 to adjust the supplementary air, increase the size of the passing space of the air duct 51, increase the air intake volume entering the combustion space 11, or detect the carbon monoxide and oxygen content in the exhaust gas discharged by the chimney 14 , when the carbon monoxide content exceeds the standard and the oxygen content is more than the normal value, the air volume controller 60 is automatically controlled to perform less wind adjustment to reduce the air intake volume entering the combustion space 11. When the carbon monoxide content exceeds the standard and the oxygen content is less than When the value is normal, the air volume controller 60 is automatically controlled to adjust the supplementary air to increase the air intake volume entering the combustion space.

The control valve 40 is connected to the control unit 70 for signals, the air volume controller 60 is connected for signals to the control unit 70, the flame detector 80 is connected for signals to the control unit 70, and the digital conversion unit 90 is connected for signals to the control unit 70. Connected, the exhaust detector 110 is connected with the control unit 70 in signal.

As shown in the second figure, its operation process includes the following steps:

S01, ignition, control the igniter 22 to ignite on the burner 21 through the control unit 70 to generate a primary fire.

S02, mother fire detection, obtain the information of this mother fire through this flame detector 80 detection, this information can be flame color, ultraviolet wavelength or ion signal, this information is converted into detection digital by this digital conversion unit 90 , when the detection number is lower than the lower limit number T1 of the primary fire (550), then go to step S03, and when the detection number is higher than the lower limit number T1 of the primary fire, then go to step S04.

S03, shut down, control the boiler to stop running through the control unit 70, and report through the man-machine interface 100.

S04, normal, the boiler keeps running normally.

S05, the first section of firepower detection, when the first section of firepower is switched off, the control unit 70 controls the rotation of the damper 61 of the air volume controller 60 and the flow rate of the control valve 40, and the flame detector 80 detects Detect and obtain the information of the first section of firepower, which can be flame color, ultraviolet wavelength or ion signal, and convert this information into a detection number through the digital conversion unit 90, when the detection number is lower than the first section of firepower The lower limit number T2 (551) then goes to step S08, and then goes to step S09 when the detected number is higher than the first section of firepower upper limit number T3 (850), and when the detected number is between the first section of firepower lower limit number T2 ( 551) and the first section of the firepower upper limit figure T3 (850), then go to step S04.

S06, the second stage of fire detection, when the second stage of fire is controlled, the control unit 70 controls the rotation of the damper 61 of the air volume controller 60 and the flow of the control valve 40, and the flame detector 80 detects Detect and obtain the information of the second section of firepower, which can be flame color, ultraviolet wavelength or ion signal, and convert this information into a detection number through the digital conversion unit 90, when the detection number is lower than the second section of firepower The lower limit number T4 (851) then goes to step S08, and then goes to step S09 when the detected number is higher than the second section of firepower upper limit number T5 (1650), and when the detected number is between the second section of firepower lower limit number T4 ( 851) and the second stage of the upper limit of firepower figure T5 (1650), then go to step S04.

S07, the third stage of fire detection, when the third stage of fire is controlled, the control unit 70 controls the rotation of the damper 61 of the air volume controller 60 and the flow of the control valve 40, and the flame detector 80 detects Detect and obtain the information of the third section of firepower, which can be flame color, ultraviolet wavelength or ion signal, and convert this information into a detection number through the digital conversion unit 90, when the detection number is lower than the third section of firepower The lower limit number T6 (1651) then goes to step S08, and then goes to step S09 when the detected number is higher than the third section of firepower upper limit number T7 (2450), and when the detected number is between the third section of firepower lower limit number T6 ( 1651) and the third stage of the upper limit of firepower figure T7 (2450), then go to step S04.

S08, replenishing air, automatically controlling the rotation of the damper 61 of the air volume controller 60, increasing the space for air passing through the air duct 51, and then increasing the air intake volume entering the combustion space 11 to provide more oxygen and fluid The fuel is evenly mixed and burned.

S09, less wind, automatically control the rotation of the damper 61 of the air volume controller 60, reduce the space for the air duct 51 to pass through, and then reduce the air intake volume entering the combustion space 11, so as to reduce the oxygen evenly mixed with the fluid fuel for combustion quantity.

S10, exhaust gas detection, through the detection of the exhaust gas detector 110 to obtain the carbon monoxide content in the exhaust gas discharged from the chimney 14, when the carbon monoxide content is higher than 100ppm (exceeding the standard), then go to step S08, or through the exhaust gas detection Detector 110 detects and obtains the carbon monoxide and oxygen content in the exhaust gas discharged by the chimney 14, when the carbon monoxide content is higher than 100ppm (exceeding the standard) and the oxygen content is more than the normal value, then go to step S09, when the carbon monoxide content is higher than 100ppm ( Exceeding the standard) and the oxygen content is less than the normal value, then go to step S08.

By the structure of above-mentioned specific embodiment, can obtain following benefit:

The smart boiler structure of the present invention can monitor the temperature and the combustion ratio. When in use, if the ratio of oxygen and fluid fuel in the air entering the combustion space 11 through the blower 50 is incorrect, the information can be detected by the flame detector 80 and converted into detection By comparing the results of the detected numbers, it can maintain normal operation, stop the report or automatically adjust the air flow into the combustion space 11 to achieve more humane, less manpower, more reliable and safer, and in any place It can be monitored safely and is more suitable for the realization of unmanned chemical plants.

10: Boiler body 11: Burn Space 12: Through hole 13: Detection hole 14: chimney 20: Burner 21: Stove head 22: Igniter 30: fuel pipe 31: Fluid fuel source 40: Control valve 50: Blower 51: Duct 60: Air volume controller 61: damper 70: Control unit 80: Flame detector 90:Digital conversion unit 100: Man-machine interface 110: Exhaust detector T1: The lower limit number of the mother fire T2: The lower limit number of the first stage of firepower T3: The upper limit of firepower in the first stage T4: The lower limit number of the second stage of firepower T5: The upper limit number of the second stage firepower T6: The lower limit number of the third stage of firepower T7: The upper limit number of the third stage firepower S01: Ignition S02: Mother fire detection S03: shutdown report S04: normal S05: The first stage of fire detection S06: The second stage of fire detection S07: The third stage of fire detection S08: Supplementary wind S09: less wind S10: Exhaust detection

The first figure is a structural schematic diagram of the present invention. The second figure is the operation flowchart of the present invention. The 3rd figure is the schematic diagram that the present invention ignites mother fire. The fourth figure is a schematic diagram of the first section of the fire state of the present invention. The fifth figure is a schematic diagram of the first section of the present invention with little firepower and little wind. The 6th figure is the schematic diagram of the first paragraph of fire supplementing wind of the present invention. The seventh figure is a schematic diagram of the second stage of the fire state of the present invention. The eighth figure is a schematic diagram of the second section of the present invention with little firepower and little wind. The 9th figure is the schematic diagram of the second section of fire power supplementing wind of the present invention. Figure 10 is a schematic diagram of the third stage of the fire state of the present invention. Figure 11 is a schematic diagram of the third section of the present invention with little wind. The twelfth figure is the schematic diagram of the third section of the present invention's fire power supplementing wind.

10: Boiler body

11: Burn Space

12: Through hole

13: Detection hole

14: chimney

20: Burner

21: Stove head

22: Igniter

30: fuel pipe

31: Fluid fuel source

40: Control valve

50: Blower

51: Duct

60: Air volume controller

61: damper

80: Flame detector

110: Exhaust detector

Claims (10)

A smart boiler structure that can monitor temperature and combustion ratio, including: A boiler body with a combustion space formed inside, and a chimney communicating with the combustion space, the chimney is used to discharge the waste gas generated in the combustion space; A burner is installed in the combustion space, and the burner is provided with a burner; a fuel pipe, one end of which is connected to a fluid fuel source and the other end is connected to the burner, providing fluid fuel to flow from the fluid fuel source to the burner for the burner to ignite and start a fire; A control valve, arranged on the fuel pipe, is used to control the flow rate of the fluid fuel to the burner through the fuel pipe, so that the fluid fuel flows out from the burner head, and can be ignited at the burner head to generate a mother fire, and can be ignited by this mother fire to generate a first section of firepower; A blower, connected to the boiler body, provides air into the combustion space of the boiler body, so that the air is evenly mixed with the fluid fuel flowing out of the burner; An air volume controller, controlling the air intake volume of the blower into the combustion space; A control unit provides control of the control valve and the air volume controller, thereby controlling the flow rate of the fluid fuel and the air intake volume, and providing control shutdown; A flame detector, installed on the boiler body, is used to detect and obtain the information of the main fire and the first stage of fire, the information can be flame color, ultraviolet wavelength or ion signal; and A digital conversion unit is used to receive the information obtained by the flame detector and convert the information into a detection number, and use the detection number as a judgment basis to provide the control unit to automatically control the air volume controller to adjust the combustion The air intake volume of the space, the main fire has a set lower limit number of the main fire, the first section of fire has a set first section of firepower lower limit number and a set first section of firepower upper limit number; The control valve is connected with the control unit in signal, the air flow controller is connected in signal with the control unit, the flame detector is connected in signal with the control unit, and the digital conversion unit is connected in signal with the control unit. The smart boiler structure capable of monitoring temperature and combustion ratio as described in claim 1 further includes an exhaust detector, which is installed on the chimney and connected to the control unit for signal detection Measure the carbon monoxide content in the exhaust gas discharged from the chimney. When the carbon monoxide content exceeds the standard, the air volume controller is automatically controlled to adjust the supplementary air to increase the air intake into the combustion space. The smart boiler structure capable of monitoring temperature and combustion ratio as described in claim 1 further includes an exhaust detector, which is installed on the chimney and connected to the control unit for signal detection Measure the carbon monoxide and oxygen content in the exhaust gas discharged from the chimney. When the carbon monoxide content exceeds the standard and the oxygen content is higher than the normal value, the air volume controller is automatically controlled to adjust the air volume to reduce the air intake volume entering the combustion space. When the carbon monoxide content exceeds the standard and the oxygen content is less than the normal value, the air volume controller is automatically controlled to adjust the supplementary air to increase the air intake volume entering the combustion space. The smart boiler structure capable of monitoring temperature and combustion ratio as described in Claim 1, wherein the flame detector is a photoresistor, an ultraviolet detector or a temperature CCD (charge coupled device). The smart boiler structure that can monitor the temperature and combustion ratio as described in claim 1, wherein the burner can also be ignited by the main fire to generate a second stage of firepower, and the flame detector can also detect and obtain the second stage The firepower information, the second stage firepower has a set second stage firepower lower limit number and a second stage firepower upper limit number. The smart boiler structure capable of monitoring temperature and combustion ratio as described in claim 4, wherein the burner can also be ignited by the main fire to generate a third stage of firepower, and the flame detector can also detect and obtain the third stage Information about the firepower, the third stage firepower has a set third stage firepower lower limit number and a set third stage firepower upper limit number. The smart boiler structure capable of monitoring temperature and combustion ratio as described in claim 1, wherein an igniter is provided on the side of the burner head. The smart boiler structure capable of monitoring temperature and combustion ratio as described in claim 1 further includes a human-machine interface, which is connected to the control unit by signal to provide user operation, monitoring of boiler operation and shutdown reports. The smart boiler structure capable of monitoring temperature and combustion ratio as described in claim 8, wherein the man-machine interface is a personal computer or a smart phone. The smart boiler structure capable of monitoring temperature and combustion ratio as described in claim 1, wherein the blower is connected to the boiler body through an air pipe, the air volume controller is arranged on the air pipe, and the air volume controller is provided with a damper , the damper is rotatably arranged in the air duct, by controlling the rotation of the damper, the size of the air duct for air to pass through can be adjusted.

Images