CN213362457U - Fire detection cooling air system of gas boiler burner - Google Patents
Fire detection cooling air system of gas boiler burner Download PDFInfo
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- CN213362457U CN213362457U CN202022180302.5U CN202022180302U CN213362457U CN 213362457 U CN213362457 U CN 213362457U CN 202022180302 U CN202022180302 U CN 202022180302U CN 213362457 U CN213362457 U CN 213362457U
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- 238000001816 cooling Methods 0.000 title claims abstract description 71
- 238000001514 detection method Methods 0.000 title claims abstract description 47
- 238000001914 filtration Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 4
- 230000006837 decompression Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The utility model relates to a fire detection cooling air system of a gas boiler burner, which comprises a first furnace air duct system and a second furnace air duct system, wherein the first furnace air duct system is connected with the second furnace air duct system through a main pipeline; the first furnace air channel system comprises a first furnace air channel, a cooling air pipeline and an air self-air channel, wherein the first furnace air channel is connected with the cooling air pipeline, and the cooling air pipeline is respectively connected with an ignition gun, a first fire detector, a second fire detector and a central fire detector; and an instrument air source interface is arranged on the cooling air pipeline. The utility model discloses use dry pure instrument air supply to examine and after the air supply is protected to the burning torch as the boiler fire, can reduce burning torch and the clean frequency of fire detection inspection, the live time is examined to extension burning torch and fire, increases boiler ignition success rate, and the wrong report probability is examined to the fire when reducing the boiler operation, reduces boiler interlocking shut down accident, guarantees boiler safety, stable long-period running.
Description
Technical Field
The utility model relates to a technical field of combustor equipment, especially the technical field of cooling air system is examined to fire of gas boiler combustor.
Background
The existing SZS50-1.57-Y, Q gas-fired boiler burner ignition gun and fire detection protection air source introduce 5kPa air by using an air blower air duct, and the air is used as a boiler ignition air source and an ignition detection and ignition gun protection air source during boiler operation, so that the cooling effect is achieved, the ignition gun and a fire detection probe are prevented from being burnt out during boiler operation, the fire detection can normally monitor the boiler combustion state, and the boiler operation is ensured.
The problems of the existing cooling air structure are as follows: air impurities introduced into the air duct are more, the water content of the air is higher, the light transmittance of the sight glass is reduced due to the fact that a fire inspection sight glass is polluted when the boiler operates, the gas-fired boiler is mistakenly reported to be interlocked and shut down, the boiler starting frequency is increased, the energy consumption is increased, and the safe and stable operation of a production device is influenced; in addition, the number of times of checking and cleaning of the ignition guns is increased, the service time of the ignition guns and the fire checks is reduced, and the operation period of the boiler is shortened; due to air impurities, the air distribution holes of the ignition gun are easy to block, and ignition failure is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem among the prior art, the cooling air system is examined to the fire that proposes gas boiler burner, use dry pure instrument air supply as boiler fire examine with the fire gun protection air supply after, can reduce the ignition gun and fire examine the clean frequency of inspection, prolong ignition gun and fire and examine the live time, increase boiler ignition success rate, fire when reducing the boiler operation examines the wrong report probability, reduce boiler interlocking blowing-out accident, guarantee boiler safety, stable long period operation.
The utility model discloses an overcome the problem that prior art exists, provide following technical scheme:
a fire detection cooling air system for a gas boiler burner comprising:
the first furnace air duct system is used for cooling and protecting the fire detection of the first furnace air duct;
the second furnace air duct system is used for cooling and protecting fire detection of a second furnace air duct, and the first furnace air duct system is connected with the second furnace air duct system through a main pipeline;
the first furnace air channel system comprises a first furnace air channel, a cooling air pipeline and an air self-air channel, wherein the first furnace air channel is connected with the cooling air pipeline, and the cooling air pipeline is respectively connected with an ignition gun, a first fire detector, a second fire detector and a central fire detector; and an instrument air source interface is arranged on the cooling air pipeline.
In the fire detection cooling air system of the gas boiler burner disclosed in the present application, optionally, the instrument gas source interface is connected to a dry and clean instrument gas source.
In the fire detection cooling air system of the gas boiler burner disclosed in the present application, optionally, a regulating valve is installed on the cooling air pipeline, and a manual filtering pressure reducing valve and a self-operated pressure reducing valve are sequentially installed on the cooling air pipeline.
In the fire detection cooling air system of the gas boiler burner disclosed in the present application, optionally, a normal pressure gauge is installed after the manual filtering pressure reducing valve, and a micro pressure gauge is installed after the self-operated pressure reducing valve.
In the fire detection cooling air system of the gas boiler burner disclosed in the present application, optionally, a pressure transmitter is installed after the self-operated pressure reducing valve, and a low pressure alarm and a high pressure alarm are set.
In the fire detection cooling air system of the gas boiler burner disclosed in the present application, optionally, the burning torch, the first fire detection, the second fire detection and the central fire detection are further connected with an air self-air channel, and the air self-air channel is provided with an air channel adjusting valve.
In the fire detection cooling air system of the gas boiler burner disclosed in the present application, optionally, the cooling air duct is divided into a plurality of cooling air branch pipes, and the cooling air branch pipes are provided with internally threaded ball valves.
In the fire detection cooling air system of the gas boiler burner disclosed in the present application, optionally, a three-way cutting ferrule connection joint is provided at the end of each cooling air branch pipe, and the three-way cutting ferrule connection joint is respectively connected with the ignition gun, the first fire detection, the second fire detection and the central fire detection.
The utility model has the advantages that:
the utility model discloses dry clean 0.7-0.8MPa instrument gas is used in the installation, decompression after the second grade decompression is examined and the flame gun protection air supply as boiler ignition air supply and fire to 5-6kPa pressure, use dry pure instrument air supply to replace the air and examine and protect the air supply as the boiler fire after, can reduce the flame gun and examine the clean frequency of inspection with the fire, the live time is examined with the fire to extension flame gun, increase boiler ignition success rate, the wrong report probability is examined to the fire when reducing the boiler operation, reduce boiler interlocking shut down accident, guarantee boiler safety, stable long period operation. And after the boiler is stopped, a dry instrument gas source is used as a boiler maintenance gas source, so that the corrosion of a convection pipeline and an energy saver of the boiler is reduced.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall connection of a fire detection cooling air system of a gas boiler burner;
FIG. 2 is a first furnace air duct system schematic of a fire detection cooling air system of a gas boiler burner;
FIG. 3 is a schematic structural diagram of a conventional furnace duct fire detection cooling air system before modification;
FIG. 4 is a schematic view of the structure of a fire detection cooling air system of a gas boiler burner.
In the drawings
1-a first furnace air duct system; 11-a first furnace air duct; 12-instrument gas source interface; 13-a regulating valve; 14-cooling air duct; 141-manual filtration relief valve; 142-atmospheric pressure gauge; 143-self-operated pressure reducing valve; 144-micro pressure gauge; 145-an internally threaded ball valve; 146-a three-way ferrule connection fitting; 15-air self-air duct; 151-air duct regulating valve; 16-an ignition gun; 17-first fire detection; 18-second fire detection; 19-central fire detection; 2-a second furnace air duct system; 21-a second furnace air duct; 3-main pipeline.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used 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 particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Moreover, the embodiments of the present application may repeat reference numerals or letters in the various examples, which are repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
If fig. 3, the structure of present stove wind channel fire detection cooling air system before reforming transform is equipped with a plurality of air and connects ignition gun 16, first fire respectively from wind channel 15 and examines 17, second fire and examine 18, central fire and examine 19, introduces 5kPa air through the air-blower, examines the protection air supply as the cooling fire, guarantees that the ignition is robbed and the fire is examined and is not burnt out when the boiler operation, and the fire is examined and can normally monitor the boiler burning, guarantees the boiler operation. Because the air water content is higher and the impurity problem in the air, lead to the ignition failure, block burning torch etc. influences the operation of apparatus for producing safety and stability.
Referring to fig. 1, 2 and 4, the fire detection cooling air system of the gas boiler burner of the present invention includes a first furnace air duct system 1, wherein the first furnace air duct system 1 is used for cooling and protecting the fire detection of a first furnace air duct 11;
the second furnace air duct system 2 is used for cooling and protecting fire detection of a second furnace air duct 21, and the first furnace air duct system 1 is connected with the second furnace air duct system 2 through a main pipeline 3; the second furnace air duct system 2 is similar in structure to the first furnace air duct system 1.
The first furnace air duct system 1 comprises a first furnace air duct 11, a cooling air pipeline 14 and an air self-air duct 15, wherein the first furnace air duct 11 is connected with the cooling air pipeline 14, and the cooling air pipeline 14 is respectively connected with an ignition gun 16, a first fire detector 17, a second fire detector 18 and a central fire detector 19;
and an instrument air source interface 12 is installed on the cooling air pipeline 14. The instrument air source interface 12 is connected with a dry and pure instrument air source. And installing and using dry and clean instrument gas with the pressure of 0.7-0.8 MPa. After the boiler is stopped, the air source of the drying instrument is used as the maintenance air source of the boiler, so that the corrosion of a convection pipeline and an energy saver of the boiler is reduced.
The cooling air pipeline 14 is provided with an adjusting valve 13, and the cooling air pipeline 14 is sequentially provided with a manual filtering pressure reducing valve 141 and a self-operated pressure reducing valve 143. A constant pressure gauge 142 is installed behind the manual filtering pressure reducing valve 141, and a micro pressure gauge 144 is installed behind the self-operated pressure reducing valve 143. After the pressure is reduced to 0.25-0.3 MPa by a manual filtration pressure reducing valve 141 of DN25, the pressure is reduced to 5-6kPa by a self-operated pressure reducing valve 143 of DN50 to be used as a protective air source for ignition and fire detection of the boiler.
And a pressure transmitter is arranged behind the self-operated pressure reducing valve 143, and is connected into the corresponding boiler DCS for observation, and a low-pressure alarm and a high-pressure alarm are set. The pressure is low to report to the police (3 kPa) and high to report to the police (7 kPa), all there is the bullet frame warning signal when the height reports to the police.
The ignition gun 16, the first fire detector 17, the second fire detector 18 and the central fire detector 19 are further connected with an air self-air channel 15, and an air channel adjusting valve 151 is arranged on the air self-air channel 15. After pressure reduction, instrument air is controlled by a DN50 ball valve, air from an air duct is reserved by a DN50 ball valve, and the instrument air and the air duct can be switched conveniently. When the boiler normally operates, a boiler operator observes the pressure of the transmitter in the DCS, and switches to air duct air for use when the pressure fluctuation of the instrument air is large or exceeds a set value of the high pressure and the low pressure of the instrument air after pressure reduction is found, so that the pressure reducing valve is checked and debugged.
The cooling air pipeline 14 is divided into a plurality of cooling air branch pipes, and the cooling air branch pipes are provided with internal thread ball valves 145. The tail end of each cooling air branch pipe is provided with a three-way clamping sleeve connecting joint 146, and the three-way clamping sleeve connecting joint 146 is respectively connected with the ignition gun 16, the first fire detector 17, the second fire detector 18 and the central fire detector 19.
A pressure transmitter 00PT1544a/b is arranged behind the self-operated pressure reducing regulating valve and is connected into a corresponding boiler DCS for observation, a low pressure alarm (3 kPa) and a high pressure alarm (7 kPa) are arranged, and the high and low alarms are all displayed by elastic frames.
After pressure reduction, instrument air is controlled by a DN50 ball valve, air from an air duct is reserved by a DN50 ball valve, and the instrument air and the air duct can be switched conveniently.
The use process comprises the following steps:
before ignition, the boiler is closed from an air duct DN50 ball valve, fully opened and decompressed instrument gas DN50 ball valve, instrument gas of 0.7-0.8MPa is decompressed to instrument gas of 0.25-0.3 MPa through a primary manual filtering decompression valve 141, and decompressed to 5-6kPa through a DN50 self-operated decompression valve 143 for secondary decompression to be used as a boiler ignition and fire detection protection gas source. When the boiler normally operates, boiler operators observe the pressure of the transmitter in the DCS, the pressure is too high or too low, the alarm is given, the pressure fluctuation of the instrument air is large or exceeds a set value of the pressure of the instrument air, the air is switched to the air channel for use, and the pressure reducing valve is checked and debugged.
The dry and clean instrument gas of 0.7-0.8MPa is used for installation, and is decompressed to 5-6kPa after secondary decompression to be used as an ignition gas source and an ignition gun protection gas source of the boiler, so that the safe and stable long-period operation of the boiler is ensured.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention.
Claims (8)
1. The fire detection cooling air system of the gas boiler burner is characterized in that: the method comprises the following steps:
the first furnace air duct system (1), the first furnace air duct system (1) is used for cooling and protecting the fire detection of the first furnace air duct (11);
the second furnace air duct system (2), the second furnace air duct system (2) is used for cooling and protecting the fire detection of the second furnace air duct (21), and the first furnace air duct system (1) is connected with the second furnace air duct system (2) through a main pipeline (3);
the first furnace air duct system (1) comprises a first furnace air duct (11), a cooling air pipeline (14) and an air self-air duct (15), wherein the first furnace air duct (11) is connected with the cooling air pipeline (14), and the cooling air pipeline (14) is respectively connected with an ignition gun (16), a first fire detector (17), a second fire detector (18) and a central fire detector (19); and an instrument air source interface (12) is arranged on the cooling air pipeline (14).
2. The fire detection cooling air system of a gas boiler burner of claim 1, wherein: the instrument gas source interface (12) is connected with a dry and pure instrument gas source.
3. The fire detection cooling air system of a gas boiler burner of claim 1, wherein: the cooling air pipeline (14) is provided with an adjusting valve (13), and the cooling air pipeline (14) is sequentially provided with a manual filtering pressure reducing valve (141) and a self-operated pressure reducing valve (143).
4. The fire detection cooling air system of a gas boiler burner as claimed in claim 3, wherein: an atmospheric pressure gauge (142) is arranged behind the manual filtering pressure reducing valve (141), and a micro-pressure gauge (144) is arranged behind the self-operated pressure reducing valve (143).
5. The fire detection cooling air system of a gas boiler burner as claimed in claim 3, wherein: and a pressure transmitter is arranged behind the self-operated pressure reducing valve (143), and a low pressure alarm and a high pressure alarm are arranged.
6. The fire detection cooling air system of a gas boiler burner of claim 1, wherein: the ignition gun (16), the first fire detector (17), the second fire detector (18) and the central fire detector (19) are further connected with an air self-air channel (15), and an air channel adjusting valve (151) is arranged on the air self-air channel (15).
7. The fire detection cooling air system of a gas boiler burner of claim 1, wherein: the cooling air pipeline (14) is divided into a plurality of cooling air branch pipes, and the cooling air branch pipes are provided with internal thread ball valves (145).
8. The fire detection cooling air system for a gas boiler burner of claim 7, wherein: and the tail end of each cooling air branch pipe is provided with a three-way clamping sleeve connecting joint (146), and the three-way clamping sleeve connecting joint (146) is respectively connected with the ignition gun (16), the first fire detector (17), the second fire detector (18) and the central fire detector (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022180302.5U CN213362457U (en) | 2020-09-29 | 2020-09-29 | Fire detection cooling air system of gas boiler burner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022180302.5U CN213362457U (en) | 2020-09-29 | 2020-09-29 | Fire detection cooling air system of gas boiler burner |
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| CN213362457U true CN213362457U (en) | 2021-06-04 |
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| CN202022180302.5U Active CN213362457U (en) | 2020-09-29 | 2020-09-29 | Fire detection cooling air system of gas boiler burner |
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| CN (1) | CN213362457U (en) |
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Effective date of registration: 20240528 Address after: 614899 Yongxiang Road, Zhu Gen Town, Wu Tong Qiao District, Leshan, Sichuan, 96 Patentee after: Sichuan Yongxiang Resin Co.,Ltd. Country or region after: China Address before: No.96 Yongxiang Road, Zhugen Town, Wutongqiao District, Leshan City, Sichuan Province Patentee before: SICHUAN YONGXIANG Co.,Ltd. Country or region before: China |
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