CN212456959U - Gas detection and linkage point stove controlling means of steam injection boiler furnace - Google Patents
Gas detection and linkage point stove controlling means of steam injection boiler furnace Download PDFInfo
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- CN212456959U CN212456959U CN201922488285.9U CN201922488285U CN212456959U CN 212456959 U CN212456959 U CN 212456959U CN 201922488285 U CN201922488285 U CN 201922488285U CN 212456959 U CN212456959 U CN 212456959U
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Abstract
The utility model discloses a steam injection boiler furnace gas detects and linkage point stove controlling means, include: the ignition controller is a PLC; the detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller; the outlet of the fan is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller; the combustor is arranged at an inlet of a gas pipe arranged on the boiler, and the combustor starting part is electrically connected with the ignition controller. The utility model discloses automatic sweep furnace, automated inspection furnace ambient temperature, gaseous environment in the automated inspection furnace, when confirming that furnace interior combustible gas concentration is in safety range, the whole set of linkage system of automatic execution combustor ignition.
Description
Technical Field
The utility model belongs to the technical field of the oil field steam injection boiler technique and specifically relates to steam injection boiler furnace gas detects and linkage point stove controlling means.
Background
In the last 80 th century, China began to research the exploitation of thick oil, and introduced oil field steam injection boilers from abroad to drive oil by steam. Over the past 20 years, as thermal recovery scales have continued to expand, more and more oil field steam injection boilers have come into use. The oil field steam injection boilers used in China mostly adopt natural gas as fuel. In the starting process of the steam injection boiler, the boiler is provided with a main control system to execute a purging program so that the residual combustible gas in a hearth is reduced to be below the combustion concentration, and the boiler can be ignited. However, the system only performs furnace purging, and the purging effect cannot be detected, so that although purging in the furnace is performed, furnace detonation accidents still occur during furnace ignition, and equipment damage and personnel damage are caused. The main reasons are as follows:
when a boiler hearth is blown and swept, the air supply efficiency of a fan is low, and combustible gas in the whole hearth cannot be effectively blown and removed within the blowing and sweeping time set by a self-contained main control system of the boiler;
the gas inlet electric control valve of the burner of the two boilers has faults to cause untight closing and gas leakage of the valve, and combustible gas continuously enters the hearth in the purging process to ensure that the combustible gas in the hearth is always in the deflagration concentration range;
the combustible gas concentration in the hearth cannot be detected before the three burners are ignited.
In order to ensure that the content of combustible gas in the hearth is in a safe concentration range before the ignition of the steam injection boiler, the accident potential of hearth deflagration is fundamentally eliminated. The gas environment in the hearth needs to be detected, and the furnace ignition operation can be carried out when the concentration of combustible gas in the hearth is confirmed to be in a safe range.
Application No.: 201310042380.0 application date: 2013-02-01 discloses a control system for gas leakage and boiler safe operation of a steam injection boiler, which comprises: the system comprises a main gas sensor, an ignition gas sensor, a hearth gas sensor, a field gas PLC control cabinet, a field boiler parameter PLC control cabinet and an upper computer. The main gas sensor is arranged in the main gas circuit, the ignition gas sensor is arranged in the ignition gas circuit, the hearth gas sensor is arranged in a hearth of the steam injection boiler, and the field gas PLC control cabinet converts the main gas circuit analog current, the ignition gas circuit analog current and the hearth analog current into digital current signals and then transmits the digital current signals to the upper computer. The control system for gas leakage and boiler safe operation of the steam injection boiler disclosed by the embodiment of the invention realizes linkage control of gas detection and boiler operation, namely, the boiler is not allowed to start and operate and can not ignite under the condition that natural gas leakage or faults are not eliminated. Meanwhile, the sensor control is adopted, so that the control lag and coupling of the boiler are eliminated, and the control precision is improved.
Application No.: 201720668073.7 application date: 2017-06-09 is a gas safe operation control system of an oil field steam injection boiler, which realizes the safe operation of the steam injection boiler taking natural gas as fuel. The system comprises a boiler combustion control device and a flame detector, wherein the flame detector is fixed in a hearth of a boiler and is connected with the boiler combustion control device through a signal cable, a manual cut-off valve, a filter, a primary self-operated pressure regulating valve, a primary pressure transmitter, a flowmeter, a primary automatic air leakage interlocking cut-off valve, a secondary automatic air leakage interlocking cut-off valve, an outdoor fire-retarding pressure relief device and a secondary self-operated pressure regulating valve are connected in series on a gas pipeline, the secondary self-operated pressure regulating valve is connected with a buffer tube and a burner in the boiler hearth, and the secondary pressure transmitter is connected in series in the buffer tube; the first-stage pressure transmitter, the first-stage air leakage automatic interlocking cut-off valve, the second-stage air leakage automatic interlocking cut-off valve, the outdoor fire-retarding pressure relief device and the second-stage pressure transmitter are all connected with the boiler combustion control device through signal cables.
Application No.: 201220542644.X, application date: 2012-10-22 relates to an oil field steam injection boiler, in particular to a combustible gas alarm interlocking system of a gas steam injection boiler. The system includes an instrument box; the instrument box is respectively connected with the combustible gas detection transmitter, the alarm, the fan control box and the quick cut-off valve, and the fan control box is connected with the fan. The utility model discloses an degree of automation is high, easy operation, the maintenance of being convenient for. The defects that the existing combustible gas alarm system is mainly manual and has complex operation procedures are overcome.
Application No.: 200920014443.0, filing date: 2009-06-08A steam injection boiler programmer ignition control device for ignition control of a steam injection boiler comprises an execution mechanism, a programmable controller, a touch screen and an ignition programmer, wherein the ignition programmer is a core element for controlling sequencing ignition and flame supervision of the steam injection boiler, and the programmable controller and the touch screen are important elements for monitoring the system operation of a system ignition programmer, a plunger pump frequency converter and various field monitoring instruments; the elements are electrically connected. The device has solved the oily medium of burning in the steam injection boiler that exists among the prior art and often can appear putting out a fire, and flame is unstable has the problem of potential safety hazard. It can be widely used in ignition control operation of steam injection boilers.
Technical scheme and the technical problem that will solve and the beneficial effect who produces of above disclosure technique all with the utility model discloses inequality, to the utility model discloses more technical characteristics and the technical problem and the beneficial effect that will solve all do not have the technological inspiration in the above technical document that discloses.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide steam injection boiler furnace gas detects and linkage point stove controlling means sweeps furnace automatically, and automated inspection furnace ambient temperature, gaseous environment in the automated inspection furnace when confirming that furnace interior combustible gas concentration is in safety range, the whole set of linkage system of automatic execution combustor ignition.
In order to achieve the above object, the utility model discloses a following technical scheme, steam injection boiler furnace gas detects and linkage point stove controlling means, include:
the ignition controller is a PLC;
the detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the combustor is arranged at an inlet of a gas pipe arranged on the boiler, and the combustor starting part is electrically connected with the ignition controller.
Further, still include:
the inner end of the hearth temperature thermocouple extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
the inlet of the smoke induced draft fan is communicated with the boiler furnace, the discharge port of the smoke induced draft fan is just opposite to the detection port of the combustible gas alarm, and the starting and stopping component of the smoke induced draft fan is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
the furnace exhaust pipe penetrates through the wall of the boiler and is communicated with the boiler furnace;
the front wall air guide pipe penetrates through the wall of the control room;
and one end of the furnace tail air guide pipe is connected with the hearth exhaust pipe, the other end of the furnace tail air guide pipe is connected with the front wall air guide pipe, and the inlet of the flue gas induced draft fan is communicated with the front wall air guide pipe.
Further, the boiler flue gas discharge mechanism includes:
the front wall electromagnetic valve is arranged on the front wall air guide pipe and is positioned in front of the smoke induced draft fan; the front wall electromagnetic valve is electrically connected with the ignition controller;
the furnace tail electromagnetic valve is arranged on the front wall air guide pipe and is positioned behind the flue gas induced draft fan; the furnace tail electromagnetic valve is electrically connected with the ignition controller.
Further, the combustible gas alarm is electrically connected with the ignition controller through a combustible gas signal wire.
Furthermore, the starting and stopping component of the fan is electrically connected with the ignition controller through a fan control line.
Further, the burner starting part is electrically connected with the ignition controller through a burner ignition control line.
Furthermore, the hearth temperature thermocouple is electrically connected with the ignition controller through a hearth temperature thermocouple signal wire.
Furthermore, the starting and stopping component of the smoke induced draft fan is electrically connected with the ignition controller through a control line of the smoke induced draft fan.
Furthermore, the front wall electromagnetic valve is electrically connected with the ignition controller through a control line of the front wall electromagnetic valve.
Further, the furnace tail electromagnetic valve is electrically connected with the ignition controller through a furnace tail electromagnetic valve control line.
Compared with the prior art, the utility model following beneficial effect has:
the utility model provides a complete set of gas detection and linkage point stove control device for a steam injection boiler furnace, the newly added system realizes automatic purging of the furnace, automatic detection of the ambient temperature of the furnace, automatic detection of the gas environment in the furnace, and automatic execution of burner ignition when the concentration of combustible gas in the furnace is confirmed to be in a safe range; the method comprises the steps of firstly detecting the environmental gas in the front wall hearth, and when the concentration of the combustible gas in the front wall hearth is detected to be in the deflagration concentration range, continuously purging the hearth by the program control fan until the concentration of the combustible gas in the hearth is detected to be in the safety range. After the front wall hearth is detected to be qualified, the program starts to detect the environment gas of the tail hearth of the boiler, and when the concentration of the environment combustible gas in the tail hearth of the boiler is detected to be in the deflagration concentration range, the program control fan continuously sweeps the hearth until the concentration of the environment combustible gas in the tail hearth of the boiler is detected to be in the safety range. When the concentration of combustible gas detected by the environmental gas in the front wall hearth and the environmental gas in the boiler tail hearth is within a safe range, the burner is automatically ignited.
Drawings
FIG. 1 is a schematic structural view of a gas detection and linkage point boiler control device connected to a steam injection boiler of a steam injection boiler furnace of the present invention;
FIG. 2 is a view of the furnace tail air guide pipe on the side of the steam injection boiler;
FIG. 3 is a schematic view of the furnace extraction duct as it passes through the boiler wall.
In the figure: the device comprises a front wall air guide pipe 1, a combustible gas alarm 2, a combustible gas signal line 3, a front wall electromagnetic valve 4, a flue gas induced draft fan 5, a furnace tail electromagnetic valve 6, a flue gas induced draft fan control line 7, a front wall electromagnetic valve control line 8, a furnace tail electromagnetic valve control line 9, an ignition controller 10, a furnace temperature thermocouple signal line 11, a furnace temperature thermocouple 12, a fan control line 13, a burner ignition control line 14, a fan 15, a burner 16, a furnace tail air guide pipe 17 and a furnace exhaust pipe 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1 to 3, the present invention provides a technical solution: steam injection boiler furnace gas detects and linkage point stove controlling means includes:
the ignition controller 10 is a PLC; the existing PLC can be directly purchased in the market for connection and use.
The detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan 15 is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the burner 16 is arranged at an inlet of a gas pipe arranged on the boiler, and the burner starting part is electrically connected with the ignition controller.
Further, still include:
and the inner end of the hearth temperature thermocouple 12 extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
and the inlet of the flue gas induced draft fan is communicated with the boiler furnace, the discharge port of the flue gas induced draft fan is just opposite to the detection port of the combustible gas alarm, and the starting and stopping part of the flue gas induced draft fan is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
the furnace exhaust pipe 18 penetrates through the wall of the boiler and is communicated with the boiler furnace;
the front wall air guide pipe 1 penetrates through the wall of the control room;
and one end of the furnace tail air guide pipe is connected with the hearth exhaust pipe, the other end of the furnace tail air guide pipe is connected with the front wall air guide pipe, and the inlet of the flue gas induced draft fan is communicated with the front wall air guide pipe.
Further, the boiler flue gas discharge mechanism includes:
the front wall electromagnetic valve 4 is arranged on the front wall air guide pipe and is positioned in front of the smoke induced draft fan; the front wall electromagnetic valve is electrically connected with the ignition controller;
the furnace tail electromagnetic valve 6 is arranged on the front wall air guide pipe and is positioned behind the flue gas induced draft fan; the furnace tail electromagnetic valve is electrically connected with the ignition controller.
Further, the combustible gas alarm is electrically connected with the ignition controller through a combustible gas signal wire 3.
Further, the start and stop component of the fan is electrically connected with the ignition controller through a fan control line 13.
Further, the burner activation component is electrically connected to the ignition controller via a burner ignition control line 14.
Further, the hearth temperature thermocouple is electrically connected with the ignition controller through a hearth temperature thermocouple signal wire 11.
Furthermore, the starting and stopping component of the smoke induced draft fan is electrically connected with the ignition controller through a control line 7 of the smoke induced draft fan.
Further, the front wall solenoid valve is electrically connected with the ignition controller through a front wall solenoid valve control line 8.
Further, the furnace tail electromagnetic valve is electrically connected with the ignition controller through a furnace tail electromagnetic valve control line 9.
When the ignition controller 10 starts a boiler ignition program of the steam injection boiler, the ignition controller 10 starts the fan 15 to blow the hearth through the fan control line 13, and the blowing time is 5 minutes. The furnace temperature thermocouple 12 then measures the ambient temperature within the furnace, which is fed back to the ignition controller 10 via the furnace temperature thermocouple signal line 11. When the measured ambient temperature in the front wall hearth is higher than 100 ℃, the ignition controller 10 controls the starting fan 15 to continuously purge the hearth for 5 minutes, and the ambient temperature in the hearth is measured again by the hearth temperature thermocouple 12 after 5 minutes. When the measured environment temperature in the hearth is less than or equal to 100 ℃, the ignition controller 10 opens the front wall electromagnetic valve 4 through the front wall electromagnetic valve control line 8, and simultaneously starts the flue gas induced draft fan 5 through the flue gas induced draft fan control line 7. The environmental gas in the front wall hearth passes through the hearth exhaust pipe 18 and the front wall air guide pipe 1 and simultaneously passes through the opened front wall electromagnetic valve 4 and is exhausted from the exhaust port of the smoke induced draft fan 5. 5 gas vents of flue gas draught fan are just to the detection mouth of combustible gas alarm 2, when combustible gas alarm 2 detected that combustible gas concentration is in the deflagration concentration range in the furnace, it exceeds standard the signal transmission for ignition controller 10 to exceed deflagration concentration through combustible gas signal line 3, ignition controller 10 controls start-up fan 15 through fan control line 13 and continues to sweep furnace, continuously sweep time 5 minutes, then carry out next endless front wall furnace ambient temperature and detect, extract the ambient gas in the front wall furnace, detect combustible gas concentration. The detection duration of each time of extracting the environmental gas in the front wall hearth is 15 seconds.
And when the concentration of the combustible gas in the hearth is detected to be in a safe range, entering a detection program for extracting the environmental gas in the hearth at the tail part of the boiler. The ignition controller 10 controls to close the front wall electromagnetic valve 4, and simultaneously opens the furnace tail electromagnetic valve 6 through a furnace tail electromagnetic valve control line 9, the environmental gas in the furnace at the tail part of the boiler passes through a furnace exhaust pipe 18 and a furnace tail air guide pipe 17, and simultaneously passes through the opened furnace tail electromagnetic valve 6 to be discharged from an exhaust port of a flue gas induced draft fan 5, the exhaust port of the flue gas induced draft fan 5 is over against a detection port of a combustible gas alarm 2, when the combustible gas alarm 2 detects that the concentration of the combustible gas in the furnace at the tail part of the boiler is in a deflagration concentration range, a deflagration concentration overproof signal is transmitted to the ignition controller 10 through a combustible gas signal line 3, the ignition controller 10 controls to start a fan 15 through a fan control line 13 to continuously purge the furnace for 5 minutes, and then the environmental temperature detection of the furnace at the tail part of, And detecting the concentration of the combustible gas. And (3) extracting the environmental gas in the tail hearth of the boiler, wherein the detection duration time of each time is 60 seconds due to the longer air induction pipeline of the tail hearth.
When the concentration of combustible gas detected by the ambient gas in the front wall hearth and the ambient gas in the boiler tail hearth are within a safe range, the ignition controller 10 starts the burner 16 to ignite through the burner ignition control line 14, and the whole boiler hearth gas detection and linkage furnace ignition program is finished.
Automatically purging a hearth, automatically detecting the ambient temperature of the hearth, automatically detecting the gas environment in the hearth, and automatically executing the whole set of linkage system for the ignition of the burner when the concentration of combustible gas in the hearth is confirmed to be in a safe range;
detecting the environmental gas in the front wall hearth and the environmental gas in the boiler tail hearth in sequence, and automatically executing the ignition of the burner when the concentration of all the combustible gas is detected to be in a safe range;
the environment temperature of the hearth is detected in advance during detection, and when the environment temperature of the hearth is not higher than a limit value, the process of gas extraction detection can be executed;
the solenoid valve opens/closes the line for pumping gas;
the smoke induced draft fan is used for leading out the environment gas of the hearth, and the environment gas is blown to a detection port of the combustible gas alarm for detecting the concentration of the combustible gas in the environment gas in the hearth;
all the lead-phoenix pipelines are connected by steel pipes;
the ignition controller 10 can be arranged independently or integrated into a main control system of the boiler;
example 2:
referring to fig. 1 to 3, the present invention provides a technical solution: steam injection boiler furnace gas detects and linkage point stove controlling means includes:
the ignition controller 10 is a PLC; the existing PLC can be directly purchased in the market for connection and use.
The detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan 15 is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the burner 16 is arranged at an inlet of a gas pipe arranged on the boiler, and the burner starting part is electrically connected with the ignition controller.
Further, still include:
and the inner end of the hearth temperature thermocouple 12 extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
and the inlet of the flue gas induced draft fan is communicated with the boiler furnace, the discharge port of the flue gas induced draft fan is just opposite to the detection port of the combustible gas alarm, and the starting and stopping part of the flue gas induced draft fan is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
the furnace exhaust pipe 18 penetrates through the wall of the boiler and is communicated with the boiler furnace;
the front wall air guide pipe 1 penetrates through the wall of the control room;
and one end of the furnace tail air guide pipe is connected with the hearth exhaust pipe, the other end of the furnace tail air guide pipe is connected with the front wall air guide pipe, and the inlet of the flue gas induced draft fan is communicated with the front wall air guide pipe.
Further, the boiler flue gas discharge mechanism includes:
the front wall electromagnetic valve 4 is arranged on the front wall air guide pipe and is positioned in front of the smoke induced draft fan; the front wall electromagnetic valve is electrically connected with the ignition controller;
the furnace tail electromagnetic valve 6 is arranged on the front wall air guide pipe and is positioned behind the flue gas induced draft fan; the furnace tail electromagnetic valve is electrically connected with the ignition controller.
Further, the combustible gas alarm is electrically connected with the ignition controller through a combustible gas signal wire 3.
Further, the start and stop component of the fan is electrically connected with the ignition controller through a fan control line 13.
Further, the burner activation component is electrically connected to the ignition controller via a burner ignition control line 14.
Further, the hearth temperature thermocouple is electrically connected with the ignition controller through a hearth temperature thermocouple signal wire 11.
Example 3:
referring to fig. 1 to 3, the present invention provides a technical solution: steam injection boiler furnace gas detects and linkage point stove controlling means includes:
the ignition controller 10 is a PLC; the existing PLC can be directly purchased in the market for connection and use.
The detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan 15 is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the burner 16 is arranged at an inlet of a gas pipe arranged on the boiler, and the burner starting part is electrically connected with the ignition controller.
Further, still include:
and the inner end of the hearth temperature thermocouple 12 extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
and the inlet of the flue gas induced draft fan is communicated with the boiler furnace, the discharge port of the flue gas induced draft fan is just opposite to the detection port of the combustible gas alarm, and the starting and stopping part of the flue gas induced draft fan is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
the furnace exhaust pipe 18 penetrates through the wall of the boiler and is communicated with the boiler furnace;
the front wall air guide pipe 1 penetrates through the wall of the control room;
and one end of the furnace tail air guide pipe is connected with the hearth exhaust pipe, the other end of the furnace tail air guide pipe is connected with the front wall air guide pipe, and the inlet of the flue gas induced draft fan is communicated with the front wall air guide pipe.
Further, the boiler flue gas discharge mechanism includes:
the front wall electromagnetic valve 4 is arranged on the front wall air guide pipe and is positioned in front of the smoke induced draft fan; the front wall electromagnetic valve is electrically connected with the ignition controller;
the furnace tail electromagnetic valve 6 is arranged on the front wall air guide pipe and is positioned behind the flue gas induced draft fan; the furnace tail electromagnetic valve is electrically connected with the ignition controller.
Example 4:
referring to fig. 1 to 3, the present invention provides a technical solution: steam injection boiler furnace gas detects and linkage point stove controlling means includes:
the ignition controller 10 is a PLC; the existing PLC can be directly purchased in the market for connection and use.
The detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan 15 is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the burner 16 is arranged at an inlet of a gas pipe arranged on the boiler, and the burner starting part is electrically connected with the ignition controller.
Further, still include:
and the inner end of the hearth temperature thermocouple 12 extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
and the inlet of the flue gas induced draft fan is communicated with the boiler furnace, the discharge port of the flue gas induced draft fan is just opposite to the detection port of the combustible gas alarm, and the starting and stopping part of the flue gas induced draft fan is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
the furnace exhaust pipe 18 penetrates through the wall of the boiler and is communicated with the boiler furnace;
the front wall air guide pipe 1 penetrates through the wall of the control room;
and one end of the furnace tail air guide pipe is connected with the hearth exhaust pipe, the other end of the furnace tail air guide pipe is connected with the front wall air guide pipe, and the inlet of the flue gas induced draft fan is communicated with the front wall air guide pipe.
Example 5:
referring to fig. 1 to 3, the present invention provides a technical solution: steam injection boiler furnace gas detects and linkage point stove controlling means includes:
the ignition controller 10 is a PLC; the existing PLC can be directly purchased in the market for connection and use.
The detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan 15 is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the burner 16 is arranged at an inlet of a gas pipe arranged on the boiler, and the burner starting part is electrically connected with the ignition controller.
Further, still include:
and the inner end of the hearth temperature thermocouple 12 extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
Further, the boiler flue gas discharge mechanism includes:
and the inlet of the flue gas induced draft fan is communicated with the boiler furnace, the discharge port of the flue gas induced draft fan is just opposite to the detection port of the combustible gas alarm, and the starting and stopping part of the flue gas induced draft fan is electrically connected with the ignition controller.
Example 6:
referring to fig. 1 to 3, the present invention provides a technical solution: steam injection boiler furnace gas detects and linkage point stove controlling means includes:
the ignition controller 10 is a PLC; the existing PLC can be directly purchased in the market for connection and use.
The detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan 15 is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the burner 16 is arranged at an inlet of a gas pipe arranged on the boiler, and the burner starting part is electrically connected with the ignition controller.
Further, still include:
and the inner end of the hearth temperature thermocouple 12 extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
Example 7:
referring to fig. 1 to 3, the present invention provides a technical solution: steam injection boiler furnace gas detects and linkage point stove controlling means includes:
the ignition controller 10 is a PLC; the existing PLC can be directly purchased in the market for connection and use.
The detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan 15 is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the burner 16 is arranged at an inlet of a gas pipe arranged on the boiler, and the burner starting part is electrically connected with the ignition controller.
Although fig. 1 is used for all the above embodiments, it is obvious to those skilled in the art that a separate drawing is not shown as long as the parts or structural features missing in the embodiments are removed from the drawing. As will be clear to the skilled person. Of course, the embodiments with more components are only the preferred embodiments, and the embodiments with fewer components are the basic embodiments, but the basic utility model objects can also be achieved, so all these are within the protection scope of the present invention.
All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technologies in the technical field, and are not described again. Such as welding, threading, bolting, etc.
In the present application, the term "plurality" means two or more unless expressly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. Steam injection boiler furnace gas detects and linkage point stove controlling means, its characterized in that includes:
the ignition controller is a PLC;
the detection port of the combustible gas alarm is over against the outlet of the boiler flue gas discharge mechanism, and the combustible gas alarm is electrically connected with the ignition controller;
the outlet of the fan is communicated with the boiler furnace, and the starting and stopping part of the fan is electrically connected with the ignition controller;
the combustor is arranged at an inlet of a gas pipe arranged on the boiler, and the combustor starting part is electrically connected with the ignition controller.
2. The steam-injection boiler furnace gas detection and linkage ignition control device according to claim 1, further comprising:
the inner end of the hearth temperature thermocouple extends into the boiler hearth from a mounting hole formed in the boiler, and the hearth temperature thermocouple is electrically connected with the ignition controller.
3. The steam-injection boiler furnace gas detection and linkage ignition control device according to claim 2, wherein the boiler flue gas exhaust mechanism comprises:
the inlet of the smoke induced draft fan is communicated with the boiler furnace, the discharge port of the smoke induced draft fan is just opposite to the detection port of the combustible gas alarm, and the starting and stopping component of the smoke induced draft fan is electrically connected with the ignition controller.
4. The steam-injection boiler furnace gas detection and linkage ignition control device according to claim 3, wherein the boiler flue gas exhaust mechanism comprises:
the furnace exhaust pipe penetrates through the wall of the boiler and is communicated with the boiler furnace;
the front wall air guide pipe penetrates through the wall of the control room;
and one end of the furnace tail air guide pipe is connected with the hearth exhaust pipe, the other end of the furnace tail air guide pipe is connected with the front wall air guide pipe, and the inlet of the flue gas induced draft fan is communicated with the front wall air guide pipe.
5. The steam-injection boiler furnace gas detection and linkage ignition control device according to claim 4, wherein the boiler flue gas exhaust mechanism comprises:
the front wall electromagnetic valve is arranged on the front wall air guide pipe and is positioned in front of the smoke induced draft fan; the front wall electromagnetic valve is electrically connected with the ignition controller;
the furnace tail electromagnetic valve is arranged on the front wall air guide pipe and is positioned behind the flue gas induced draft fan; the furnace tail electromagnetic valve is electrically connected with the ignition controller.
6. The gas detection and linkage ignition control device for the hearth of the steam injection boiler according to claim 1, wherein the combustible gas alarm is electrically connected with the ignition controller through a combustible gas signal line.
7. The steam-injection boiler furnace gas detection and linkage ignition control device as claimed in claim 1, wherein the start and stop part of the fan is electrically connected with the ignition controller through a fan control line.
8. The steam-injection boiler furnace gas detection and linkage ignition control device as claimed in claim 1, wherein the burner starting part is electrically connected with the ignition controller through a burner ignition control line.
9. The steam-injection boiler furnace gas detection and linkage ignition control device as claimed in claim 2, wherein the furnace temperature thermocouple is electrically connected with the ignition controller through a furnace temperature thermocouple signal wire.
10. The device for detecting the gas in the hearth of the steam injection boiler and controlling the linked ignition of the boiler as claimed in claim 3, wherein the start and stop component of the flue gas induced draft fan is electrically connected with the ignition controller through a control line of the flue gas induced draft fan.
11. The steam-injection boiler furnace gas detection and linkage ignition control device as claimed in claim 5, wherein the front wall solenoid valve is electrically connected with the ignition controller through a front wall solenoid valve control line.
12. The steam-injection boiler furnace gas detection and linkage ignition control device as claimed in claim 5, wherein the furnace tail electromagnetic valve is electrically connected with the ignition controller through a furnace tail electromagnetic valve control line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488285.9U CN212456959U (en) | 2019-12-31 | 2019-12-31 | Gas detection and linkage point stove controlling means of steam injection boiler furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488285.9U CN212456959U (en) | 2019-12-31 | 2019-12-31 | Gas detection and linkage point stove controlling means of steam injection boiler furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212456959U true CN212456959U (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922488285.9U Active CN212456959U (en) | 2019-12-31 | 2019-12-31 | Gas detection and linkage point stove controlling means of steam injection boiler furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212456959U (en) |
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2019
- 2019-12-31 CN CN201922488285.9U patent/CN212456959U/en active Active
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