CN210601612U - Combustion control device - Google Patents
Combustion control device Download PDFInfo
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- CN210601612U CN210601612U CN201921364421.7U CN201921364421U CN210601612U CN 210601612 U CN210601612 U CN 210601612U CN 201921364421 U CN201921364421 U CN 201921364421U CN 210601612 U CN210601612 U CN 210601612U
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Abstract
The utility model discloses a combustion control device, including the gas pipeline, the air-conditioning pipeline, cut the control valve, the air-mixing chamber, ignition electrode, flame detection electrode and control system, cut the control valve setting on the gas pipeline, the end of giving vent to anger of gas pipeline and air-conditioning pipeline give vent to anger the end respectively with the air inlet intercommunication on the air-mixing chamber, ignition electrode and flame detection electrode set up the gas outlet outside on the air-mixing chamber respectively, the gas outlet and the well casing intercommunication that sets up in polluting soil, control system respectively with cut the control valve, ignition electrode and flame detection electrode electric connection. The setting of flame detection electrode and cut-off control valve makes the device intelligent, and when unexpected the condition took place to lead to flame to extinguish, the flame detection electrode fed back the flame extinction signal who detects to control system, and control system closes through the switch who cuts off the supply for cutting off the control valve and cuts off the control valve, avoids taking place incident such as conflagration, explosion because of combustible gas releases.
Description
Technical Field
The utility model relates to a soil environment restoration technology field, concretely relates to combustion control device is used as the normal position heating unit who pollutes soil thermal desorption system.
Background
With the development of industrial production in China, the pollution caused by factories causes the soil to be polluted, and the ecological environment and the human health are seriously threatened. For the soil pollution of organic hydrocarbon, the in-situ thermal desorption remediation technology is a very effective treatment way, and the principle is that the polluted soil is heated to a temperature above the boiling point of a target pollutant at the original position, and the pollutant is selectively promoted to be gasified and volatilized by controlling the temperature and the retention time of the system, so that the target pollutant is separated from soil particles, and the aim of removing the pollutant is fulfilled. The site in-situ heating unit is core equipment for carrying out in-situ thermal desorption on the polluted soil, and although some in-situ thermal desorption equipment is put into use in China at present, the heating unit mostly adopts electric heating or steam heating, so that temporary large-scale electricity utilization of part of sites is not easy to obtain, and the steam heating temperature is lower. The method for heating air by combusting combustible gas is the development direction of an in-situ thermal desorption heating unit, but at present, few combustors specially aiming at in-situ thermal desorption exist, and some people adopt a common combustor sold in the market to transform the combustor into the in-situ thermal desorption additional heating unit, but the combustor has heavy structure and complex process, and if the flame is extinguished due to unexpected circumstances, a combustible gas pipeline cannot be automatically closed, so that great potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a combustion control device of simple structure technology, security height is as polluting soil thermal desorption system's normal position heating unit.
The utility model adopts the following technical scheme:
a combustion control device comprises a gas pipeline for conveying combustible gas, an air conditioning pipeline, a cut-off control valve, a gas mixing chamber, an ignition electrode, a flame detection electrode and a control system, wherein the cut-off control valve is arranged on the gas pipeline, the gas mixing chamber is provided with a gas inlet and a gas outlet, the gas outlet end of the gas pipeline and the gas outlet end of the air conditioning pipeline are respectively communicated with the gas inlet on the gas mixing chamber, the ignition electrode and the flame detection electrode are respectively arranged on the outer side of the gas outlet on the gas mixing chamber, the gas outlet is communicated with a well pipe arranged in polluted soil, and the control system is respectively electrically connected with the cut-off control valve, the ignition electrode and the flame detection electrode; the control system provides instantaneous high pressure for the ignition electrode to ignite combustible gas which is sprayed out from the gas outlet end of the gas pipeline and is mixed with air in the gas mixing chamber; when the flame of the combustible gas is extinguished, the flame detection electrode feeds back a detected signal to the control system, and the control system closes the cut-off control valve by cutting off a power switch.
The device further comprises a shell and a case, wherein the shell is arranged above the air mixing chamber and communicated with the air mixing chamber, the case is arranged above the shell, the gas pipeline penetrates through the shell and communicated with the air mixing chamber, the air outlet end of the air conditioning pipeline is arranged on the side wall of the shell, and the cut-off control valve and the control system are arranged in the case.
And the air inlet end of the air conditioning pipeline is communicated with the outside atmosphere.
And the gas outlet end of the gas pipeline is provided with a nozzle.
The cut-off control valve is opened in the power-on state and closed in the power-off state.
Preferably, the cut-off control valve is a solenoid valve.
The flame detection electrode is a flame detection sensor, and the combustible gas conveyed in the gas pipeline is natural gas.
And the air inlet end of the gas pipeline and the air inlet end of the air conditioning pipeline are respectively provided with a valve A and a valve B.
Preferably, the valve A and the valve B are both manual valves.
The utility model discloses technical scheme has following advantage:
A. the utility model relates to a combustion control device, which is used as an in-situ heating unit of a thermal desorption system of polluted soil, combustible gas is ignited by an ignition electrode and then combusted, the heat generated by combustion heats air, and the heat carried by hot air flow can be absorbed by a well pipe arranged in the polluted soil and is conducted to the polluted soil; the setting of flame detection electrode and cut-off control valve makes the device intelligent, and when unexpected the condition took place to lead to flame to extinguish, the flame detection electrode fed back the flame extinction signal who detects to control system, and control system closes through the switch who cuts off the supply for cutting off the control valve and cuts off the control valve, avoids taking place incident such as conflagration, explosion because of combustible gas releases.
B. The utility model relates to a combustion control device, structure and theory of operation are simple, easy to operate, and degree of automation is higher, has better spreading value.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the combustion control device of the present invention;
fig. 2 is the working principle diagram of the middle control system of the utility model.
The labels in the figure are as follows:
1-a gas pipeline, 11-a valve A; 2-air conditioning duct, 21-valve B; 3-a control system; 4-cutting off the control valve; 5-a housing; 6-air mixing chamber, 61-air inlet, 62-air outlet; 7-an ignition electrode; 8-a flame detection electrode; 9-a nozzle; 10-a chassis; 20-a power supply; 30-power switch.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", 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 element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the utility model provides a combustion control device, including the gas pipeline 1 of carrying combustible gas, air-conditioning pipeline 2, cut control valve 4, the gas mixing chamber 6, ignition electrode 7, flame detection electrode 8 and control system 3, cut control valve 4 and set up on gas pipeline 1, be equipped with air inlet 61 and gas outlet 62 on the gas mixing chamber 6, the end of giving vent to anger of gas pipeline 1 and air-conditioning pipeline 2 communicates with air inlet 61 on the gas mixing chamber 6 respectively, ignition electrode 7 and flame detection electrode 8 set up the gas outlet 62 outside on gas mixing chamber 6 respectively, gas outlet 62 communicates with the well casing that sets up in polluting soil, carry the heated hot-air through the well casing, and conduct for contaminated soil; the control system 3 is respectively electrically connected with the cutoff control valve 4, the ignition electrode 7 and the flame detection electrode 8, and the control system 3 provides instantaneous high-pressure combustible gas for the ignition electrode 7 to ignite the gas outlet end of the gas pipeline 1 to spray out and mix with air in the gas mixing chamber 6; when the flame of the combustible gas is extinguished, the flame detection electrode 8 feeds the detected signal back to the control system 3, and the control system 3 turns off the cut-off control valve 4 by cutting off the power switch. The utility model is used as an in-situ heating unit of a thermal desorption system of polluted soil, combustible gas is ignited by an ignition electrode and then is combusted, the heat generated by combustion heats air, and the heat carried by hot air flow can be absorbed by a well pipe arranged in the polluted soil and is conducted to the polluted soil; the setting of flame detection electrode and cut-off control valve makes the device intelligent, and when unexpected the condition took place to lead to flame to extinguish, the flame detection electrode fed back the flame extinction signal who detects to control system, and control system closes through the switch who cuts off the supply for cutting off the control valve and cuts off the control valve, avoids taking place incident such as conflagration, explosion because of combustible gas leaks.
The utility model discloses special treatment has been carried out to the flame-out phenomenon that exists in the soil thermal desorption combustion process. When the combustion control device works, the flame detection electrode is always in a working state, and when the flame detection electrode detects that the flame is extinguished, an electric signal is fed back to prompt the device to be re-ignited; when the actual ignition time exceeds the set ignition time threshold value, the device is in a default closed state, so that gas leakage is prevented, and effective utilization of energy is guaranteed. Meanwhile, the opening of a cut-off control valve arranged in the device is slowly increased, the flow of corresponding gas is also gradually increased, the design can prevent excessive gas from being instantly filled in a combustion chamber (the excessive gas is filled in a cavity, and the ignition can be exploded), and the fire and explosion safety accidents are avoided.
Furthermore, the device also comprises a shell 5 and a case 10, wherein the shell 5 is arranged above the gas mixing chamber 6 and communicated with the gas mixing chamber 6, the case 10 is arranged above the shell 5, the gas pipeline 1 penetrates through the shell 5 to be communicated with the gas mixing chamber 6, the gas outlet end of the air conditioning pipeline 2 is arranged on the side wall of the shell 5, and the gas inlet end of the air conditioning pipeline is communicated with the outside atmosphere; the cut-off control valve 4 and the control system 3 are arranged in the case 10; the gas outlet end of the gas pipeline 1 is provided with a nozzle 9.
The cutoff control valve 4 is opened in an energized state and closed in a de-energized state, and is preferably a solenoid valve. The flame detection electrode 8 is a flame detection sensor; the combustible gas conveyed in the gas pipeline 1 is natural gas.
The air inlet end of the gas pipeline 1 and the air inlet end of the air adjusting pipeline 2 are respectively provided with a manual valve A11 and a manual valve B21.
Fig. 2 shows a working schematic diagram of the control system, which is as follows: the power switch 30 is closed, the power supply 20 supplies power to the control system 3, the control system 3 energizes the cut-off control valve 4, and the cut-off control valve 4 controls the flow of combustible gas in the gas pipeline; the control system 3 simultaneously supplies high voltage to the ignition electrode 7, and an electric spark is generated between two electrodes of the ignition electrode 7 to ignite the combustible gas. If the flame is extinguished due to an accident, the flame cannot be detected by the electrode of the flame detection electrode 8, the control system 3 is timely informed to close the cut-off control valve 4 to cut off the combustible gas, and the safety is ensured.
The utility model relates to a combustion control device, structure and theory of operation are simple, easy to operate, and degree of automation is higher, has better spreading value.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. The utility model provides a combustion control device, its characterized in that, including gas pipeline (1), air-conditioning pipeline (2) of carrying combustible gas, cut control valve (4), gas mixing chamber (6), ignition electrode (7), flame detection electrode (8) and control system (3), cut control valve (4) and set up on gas pipeline (1), be equipped with air inlet (61) and gas outlet (62) on gas mixing chamber (6), gas pipeline (1) give vent to anger the end with the end of giving vent to anger of air-conditioning pipeline (2) respectively with on gas mixing chamber (6) air inlet (61) intercommunication, ignition electrode (7) and flame detection electrode (8) set up respectively on gas mixing chamber (6) gas outlet (62) the outside, gas outlet (62) and the well casing intercommunication that sets up in polluting soil, control system (3) respectively with cut control valve (4), The ignition electrode (7) is electrically connected with the flame detection electrode (8); the control system (3) provides instantaneous high pressure for the ignition electrode (7) to ignite combustible gas which is sprayed out from the gas outlet end of the gas pipeline (1) and is mixed with air in the gas mixing chamber (6); when the flame of the combustible gas is extinguished, the flame detection electrode (8) feeds the detected signal back to the control system (3), and the control system (3) closes the cutoff control valve (4) by cutting off a power switch.
2. The combustion control device according to claim 1, further comprising a housing (5) and a case (10), wherein the housing (5) is disposed above the air mixing chamber (6) and communicated with the air mixing chamber (6), the case (10) is disposed above the housing (5), the gas pipeline (1) passes through the housing (5) to be communicated with the air mixing chamber (6), the air outlet end of the air adjusting pipeline (2) is disposed on a side wall of the housing (5), and the shutoff control valve (4) and the control system (3) are disposed in the case (10).
3. A combustion control device according to claim 2, characterized in that the air inlet end of the air-conditioning duct (2) is open to the outside atmosphere.
4. A combustion control device according to claim 3, characterized in that the gas outlet end of the gas pipe (1) is provided with a nozzle (9).
5. The combustion control device as claimed in claim 1, characterized in that the shut-off control valve (4) is open in the energized state and closed in the de-energized state.
6. The combustion control device as claimed in claim 5, characterized in that the shut-off control valve (4) is a solenoid valve.
7. The combustion control device as claimed in claim 6, wherein the flame detection electrode (8) is a flame detection sensor, and the combustible gas transported in the gas pipeline (1) is natural gas.
8. The combustion control device as claimed in any one of claims 1-7, characterized in that the inlet end of the gas duct (1) and the inlet end of the air-conditioning duct (2) are provided with a valve A (11) and a valve B (21), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921364421.7U CN210601612U (en) | 2019-08-21 | 2019-08-21 | Combustion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921364421.7U CN210601612U (en) | 2019-08-21 | 2019-08-21 | Combustion control device |
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| Publication Number | Publication Date |
|---|---|
| CN210601612U true CN210601612U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921364421.7U Active CN210601612U (en) | 2019-08-21 | 2019-08-21 | Combustion control device |
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| CN (1) | CN210601612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114246169A (en) * | 2021-12-21 | 2022-03-29 | 芜湖快螳螂智能设备有限公司 | Steam type sprayer and control method thereof |
-
2019
- 2019-08-21 CN CN201921364421.7U patent/CN210601612U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114246169A (en) * | 2021-12-21 | 2022-03-29 | 芜湖快螳螂智能设备有限公司 | Steam type sprayer and control method thereof |
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