CN211739066U - Gas combustion system - Google Patents
Gas combustion system Download PDFInfo
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- CN211739066U CN211739066U CN201921774684.5U CN201921774684U CN211739066U CN 211739066 U CN211739066 U CN 211739066U CN 201921774684 U CN201921774684 U CN 201921774684U CN 211739066 U CN211739066 U CN 211739066U
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- fan
- proportional valve
- front premixing
- gas
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Abstract
The utility model discloses a gas combustion system, which comprises a combustor, a front premixing fan, a proportional valve and a controller, wherein the combustor, the front premixing fan and the proportional valve are sequentially communicated; the front premixing fan comprises a front premixing cavity and a power cavity which are communicated; the front premixing cavity is provided with a gas inlet and an air inlet; the power cavity is internally provided with a fan blade driven by a motor; the power cavity is provided with a mixed gas outlet; the proportional valve is provided with a flow regulator; the combustor is communicated with the front premixing fan through a mixed gas outlet; and the proportional valve is communicated with the front premixing fan through a gas inlet. The utility model discloses a premix chamber before setting up in the fan to mix air and natural gas in direct fan, compare with traditional mixed mode, mix the effect better, do not need to install in addition before the premixing device alone, it is very convenient to install.
Description
Technical Field
The utility model relates to a combustor field especially relates to a gas combustion system.
Background
The existing gas burner is that gas and air enter a combustion chamber through a combustion head and then are mixed and combusted. The problems of uneven temperature field distribution, large excess coefficient of combustion air and the like easily occur to fire. The problems are that a large amount of heat energy is lost easily, NOX and CO in the smoke are high and the like.
In order to adapt to the problems, the design of the gas-fired boiler needs to enlarge the space of a combustion chamber and arrange a large amount of heat exchange areas to overcome, so that the existing boiler has the defects of large volume, more material consumption, large space occupation, low thermal efficiency and high CO and NOX compounds in smoke.
The existing full-front premixing gas burner has the advantages that the gas inlet position is located behind the outlet of the fan, so that the stroke of combustible gas mixed by gas and air to the burner head of the burner is short, if the rear-mounted treatment is improper, the mixing is not uniform, the gas is not sufficiently combusted, and the content of harmful gases such as CO and NOX in smoke is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a mix abundant, easy to assemble's gas combustion system.
Realize the utility model discloses the technical scheme of purpose is: a gas combustion system comprises a combustor, a front premixing fan, a proportional valve and a controller, wherein the combustor, the front premixing fan and the proportional valve are sequentially communicated, and the controller is used for controlling the rotation of the front premixing fan and the adjustment of the proportional valve; the front premixing fan comprises a front premixing cavity and a power cavity which are communicated; the front premixing cavity is provided with a gas inlet and an air inlet; the power cavity is internally provided with a fan blade driven by a motor; the power cavity is provided with a mixed gas outlet; the proportional valve is provided with a flow regulator; the combustor is communicated with the front premixing fan through a mixed gas outlet; and the proportional valve is communicated with the front premixing fan through a gas inlet.
The burner is provided with a thermocouple flame detector and an igniter.
The proportional valve is provided with a first stop valve for small flow and a second stop valve for large flow; the flow regulator is arranged on the second stop valve.
The thermocouple flame detector, the igniter, the motor of the front premixing fan, the first stop valve and the second stop valve are electrically connected through the controller.
The air inlet is connected with a tapered air duct which is gradually reduced.
A connecting flange is arranged outside the mixed gas outlet; one side of the connecting flange is fixedly connected with the fixing block in a clamping mode through the notch, and the other side of the connecting flange is fixed through the fixing through hole.
By adopting the technical scheme, the utility model discloses following beneficial effect has:
(1) the utility model discloses a premix chamber before setting up in the fan to mix air and gas in direct fan, compare with traditional mixed mode, mix the effect better, do not need to install in addition before the premixing device alone, it is very convenient to install.
(2) The utility model discloses a be equipped with thermocouple flame detector and ignition ware on the combustor, conveniently ignite, can accurately detect the ignition state simultaneously.
(3) The utility model discloses a be equipped with first stop valve and second stop valve on the proportional valve, can the circulation of accurate control gas, dual guarantee, it is safer.
(4) The utility model discloses a thermocouple flame detector, some firearm, first stop valve and second stop valve electricity are connected, and thermocouple flame detector can detect
(5) The utility model discloses an air inlet in-connection has the toper wind channel that dwindles gradually, can improve the air admission speed, mixes the effect in advance before increasing.
(6) The utility model discloses a flange one side joint, one side bolt fastening only need two bolt fastening, easy to assemble and dismantlement.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is the structural schematic diagram of the front premixing fan of the present invention.
Fig. 3 is a schematic cross-sectional view of the front premixing fan of the present invention.
Fig. 4 is a schematic structural diagram of the proportional valve of the present invention.
The reference numbers in the drawings are as follows: the device comprises a combustor 1, a thermocouple flame detector 1-1 and an igniter 1-2;
the device comprises a front premixing fan 2, a front premixing cavity 2-1, a power cavity 2-2, a fuel gas inlet 2-3, an air inlet 2-4, a mixed gas outlet 2-5 and a connecting flange 2-6;
a proportional valve 3, a stop valve 3-1 and a second stop valve 3-2.
Detailed Description
(example 1)
Referring to fig. 1 to 4, the gas combustion system of the present embodiment includes a burner 1, a front pre-mixing fan 2, and a proportional valve 3, which are sequentially connected, and a controller for controlling the rotation of the front pre-mixing fan 2 and the adjustment of the proportional valve 3. The front premixing fan 2 comprises a front premixing cavity 2-1 and a power cavity 2-2 which are communicated. The front premixing cavity 2-1 is provided with a gas inlet 2-3 and an air inlet 2-4. The power cavity 2-2 is internally provided with a fan blade driven by a motor. The power cavity 2-2 is provided with a mixed gas outlet 2-5. The proportional valve 3 is provided with a flow regulator. The combustor 1 is communicated with a front premixing fan 2 through a mixed gas outlet 2-5. The proportional valve 3 is communicated with the front premixing fan 2 through a fuel gas inlet 2-3.
In order to facilitate ignition and simultaneously detect an ignition state, the burner 1 is provided with a thermocouple flame detector 1-1 and an igniter 1-2.
In order to control the size of the fuel gas conveniently, a first stop valve 3-1 for small flow and a second stop valve 3-2 for large flow are arranged on the proportional valve 3. The flow regulator is arranged on the second stop valve 3-2, the first stop valve 3-1 is used for controlling a small strand of gas combusted by the long-time open fire, the second stop valve 3-2 is opened according to the requirement of fire after the long-time open fire is ignited successfully to control the gas to be introduced into the combustor 1, and the long-time open fire is ignited for facilitating ignition.
The thermocouple flame detector 1-1, the igniter 1-2, the motor of the front premixing fan 2, the first stop valve 3-1 and the second stop valve 3-2 are all electrically connected with the controller. After the igniter 1-2 is ignited, the thermocouple flame detector 1-1 detects whether the ignition is successful or not, if the ignition is not successful, the second stop valve is controlled to be closed, and the gas supply is stopped. The motor changes the rotating speed according to the signal of the controller and controls the air flow to ensure the mixing effect.
In order to increase the pre-premixing effect, the air inlets 2-4 are connected with tapered air ducts which are gradually reduced, so that the air flow rate is higher.
In order to facilitate fixing, enhance the connecting effect and prevent air leakage, a connecting flange 2-6 is arranged outside the mixed gas outlet 2-5. One side of the connecting flange 2-6 is clamped and fixed with the fixing block through the notch, and the other side is fixed through the fixing through hole. During connection, the notch on one side and the fixing block are clamped and fixed, then the bolt is screwed on the fixing through hole on the other side, and fixation is completed, and the fixation can be completed only by two bolts compared with the traditional flange connection mode.
The operation principle of the gas combustion system of the embodiment is as follows; and (3) opening an igniter 1-2, opening a first stop valve 3-1, igniting the ever-burning flame, and opening a second stop valve 3-2 and igniting the flame if the thermocouple flame detector 1-1 detects that the ignition is successful. Due to the proportional gas distribution, the gas throughput of the corresponding flow regulator is changed by adjusting the rotating speed of the front premixing fan, so that the control of the firepower is realized; if the thermocouple flame detector 1-1 detects the ignition failure, the first cutoff valve is closed.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A gas combustion system, characterized in that: the device comprises a combustor (1), a front premixing fan (2), a proportional valve (3) and a controller, wherein the combustor, the front premixing fan (2) and the proportional valve (3) are sequentially communicated through a pipeline; the front premixing fan (2) comprises a front premixing cavity (2-1) and a power cavity (2-2) which are communicated; the front premixing cavity (2-1) is provided with a gas inlet (2-3) and an air inlet (2-4); the power cavity (2-2) is internally provided with a fan blade driven by a motor; the power cavity (2-2) is provided with a mixed gas outlet (2-5); the proportional valve (3) is provided with a flow regulator; the combustor (1) is communicated with the front premixing fan (2) through a mixed gas outlet (2-5); the proportional valve (3) is communicated with the front premixing fan (2) through a gas inlet (2-3).
2. A gas combustion system as in claim 1, wherein: the combustor (1) is provided with a thermocouple flame detector (1-1) and an igniter (1-2).
3. A gas combustion system as in claim 2, wherein: the proportional valve (3) is provided with a first stop valve (3-1) with small flow and a second stop valve (3-2) with large flow; the flow regulator is arranged on the second stop valve (3-2).
4. A gas combustion system as in claim 3, wherein: the thermocouple flame detector (1-1), the igniter (1-2), the motor of the front premixing fan (2), the first stop valve (3-1) and the second stop valve (3-2) are all electrically connected with the controller.
5. A gas combustion system as in claim 1, wherein: the air inlet (2-4) is connected with a tapered air duct which is gradually reduced.
6. A gas combustion system as in claim 1, wherein: a connecting flange (2-6) is arranged outside the mixed gas outlet (2-5); one side of each connecting flange (2-6) is fixedly connected with the corresponding fixing block through a notch in a clamping mode, and the other side of each connecting flange is fixedly connected with the corresponding fixing through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921774684.5U CN211739066U (en) | 2019-10-22 | 2019-10-22 | Gas combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921774684.5U CN211739066U (en) | 2019-10-22 | 2019-10-22 | Gas combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211739066U true CN211739066U (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921774684.5U Active CN211739066U (en) | 2019-10-22 | 2019-10-22 | Gas combustion system |
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| CN (1) | CN211739066U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444126A (en) * | 2020-12-10 | 2021-03-05 | 广东朗盾科技有限公司 | Premixing type heating furnace |
-
2019
- 2019-10-22 CN CN201921774684.5U patent/CN211739066U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444126A (en) * | 2020-12-10 | 2021-03-05 | 广东朗盾科技有限公司 | Premixing type heating furnace |
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