CN205261939U - Gas -fired hot water boiler's automatic control device - Google Patents
Gas -fired hot water boiler's automatic control device Download PDFInfo
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- CN205261939U CN205261939U CN201521052287.9U CN201521052287U CN205261939U CN 205261939 U CN205261939 U CN 205261939U CN 201521052287 U CN201521052287 U CN 201521052287U CN 205261939 U CN205261939 U CN 205261939U
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Abstract
The utility model relates to a gas -fired hot water boiler's automatic control device is connected with a boiler system, boiler system includes the boiler, the boiler is connected respectively with an air -supply line, a gas pipe, an inlet tube, an outlet pipe, the air -supply line again with a blower connection, be provided with the gas valve on the gas pipe, the inlet tube is connected with a water processing system, just the inlet tube with connect through a circulation pipeline between the outlet pipe, the last circulating pump that is provided with of circulation pipeline. Automatic control device includes first converter, with the circulating pump is connected, go out water traffic collection ware, set up on the outlet pipe, and DCS control system, with first converter reaches it connects respectively to go out water traffic collection ware. The utility model discloses the constitution is simple relatively, control mode is nimble.
Description
Technical field
The utility model relates to Boiler Control field, particularly relates to the automatic of a kind of gas-fired water heating boilerControl device.
Background technology
Along with the quickening of urbanization process, increasing central heating heating plant appears at each big and medium-sized cities generationReplace the heating voluntarily of original every family. Negative shadow is served in the fast development of science and technology inevitably bandRing, the appearance of environmental pollution, haze makes people recognize the important of clean energy resource, now new in big and medium-sized citiesThe boiler room of building is that fuel replaces original fire coal mainly with natural gas. For the requirements for automatic control of boiler room alsoDay by day improve, developed into the robot control system(RCS) such as PLC, DCS of current main flow by initial standby instrument board.
Gas-fired water heating boiler is the one of hot-water boiler, with combustion gas (as natural gas, liquefied petroleum gas, cityCoal gas, biogas etc.) be fuel, by burner, water is heated, realize for warming up life, bathing are providedHot water. Gas-fired water heating boiler, compared with coal-fired hot-water boiler, has that intelligent degree is high, heating is fast, low noiseThe advantage such as sound, free from dust. For big-and-middle-sized gas-fired water heating boiler room equipment more than single-machine capacity 58MW,Because it forms comparatively complexity, its corresponding automaton is also comparatively complicated, and control mode is also ineffectiveLive.
Utility model content
Technical problem to be solved in the utility model is, provide a kind of form relatively simple, control mode is cleverThe automaton of the gas-fired water heating boiler of living.
To achieve these goals, the automaton of a kind of gas-fired water heating boiler of the present utility model, withOne steam generator system connects, and described steam generator system comprises boiler, described boiler and a blast pipe, a Gas Pipe,One water inlet pipe, an outlet pipe connect respectively, and described blast pipe is connected with an air blast again, in described Gas PipeBe provided with gas valve, described water inlet pipe is connected with a water treatment system, and described water inlet pipe and described outlet pipeBetween by one circulation line connect, on described circulation line, be provided with circulating pump. Described automatonComprise the first frequency converter, be connected with described circulating pump; Water flow collector, is arranged on described outlet pipe;And DCS control system, be connected respectively with described the first frequency converter and described water flow collector.
The automaton of above-mentioned gas-fired water heating boiler, wherein, also comprises:
The second frequency converter, is connected with described air blast;
Furnace pressure collector, is connected with the burner hearth of described boiler; And
Air channel pressure acquisition device, is arranged on described blast pipe;
Wherein, described the second frequency converter, described furnace pressure collector, described air channel pressure acquisition device is respectivelyBe connected with described DCS control system.
The automaton of above-mentioned gas-fired water heating boiler, wherein, also comprises:
Leaving water temperature collector, is arranged on described outlet pipe; And
Air door adjusting valve, is arranged on described blast pipe;
Wherein, described leaving water temperature collector, described air door adjusting valve respectively with described DCS control systemConnect.
The automaton of above-mentioned gas-fired water heating boiler, wherein, described DCS control system comprises twoPlatform controller, and two controllers redundancy each other.
Beneficial functional of the present utility model is: based on the first frequency converter, and water flow collector and DCSThe setting of control system, by the water flow of water flow collector detection boiler, when flow is established lower than oneWhen definite value, DCS control system start circulating pump, according to water flow the first frequency converter with regulate circulating pumpFrequency, can simply realize boiler self-circulation system regulate.
Further, the utility model can also, according to furnace pressure and air channel pressure, be adjusted air blastJoint; And can load according to user's request, automatically regulate wind, gas proportioning, boiler output is met consumers' demand.
On the whole, the utility model not only forms relatively simple and control mode is also versatile and flexible.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to this realityWith novel restriction.
Brief description of the drawings
Fig. 1 is the structure chart of steam generator system;
Fig. 2 is the structured flowchart of the automaton of gas-fired water heating boiler of the present utility model;
Fig. 3 adopts automaton of the present utility model to carry out the control of boiler self-circulation system adjustingSchematic diagram;
Fig. 4 is the control principle that adopts automaton of the present utility model to carry out blower frequency adjustingFigure;
Fig. 5 is the control principle drawing that adopts automaton of the present utility model to carry out boiler load adjusting.
Wherein, Reference numeral
100-steam generator system
110-boiler
120-blast pipe
130-Gas Pipe
140-water inlet pipe
150-outlet pipe
160-air blast
170-gas valve
180-water treatment system
190-circulation line
1110-circulating pump
200-automaton
The 201-the first frequency converter
202-water flow collector
203-DCS control system
The 204-the second frequency converter
205-furnace pressure collector
206-air channel pressure acquisition device
207-leaving water temperature collector
208-air door adjusting valve
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model are described in detail, with moreFurther understand the purpose of this utility model, scheme and effect, but not as the appended right of the utility modelThe restriction of claimed scope.
Consult Fig. 1 and Fig. 2, the automaton 200 of gas-fired water heating boiler of the present utility model, with oneSteam generator system 100 connects. Steam generator system comprises boiler 110, boiler 100 and a blast pipe 120, a combustionTracheae 130, a water inlet pipe 140, an outlet pipe 150 connect respectively, blast pipe 120 again with an air blast160 connect, and are provided with gas valve 170, water inlet pipe 140 and a water treatment system 180 in Gas Pipe 130Connect, and between water inlet pipe 140 and outlet pipe 150, be connected circulation line by a circulation line 190On 190, be provided with circulating pump 1110. For convenient, boiler 110 is controlled automaton 200Comprise the first frequency converter 201, water flow collector 202, (DCS's DCS control system 203 distributesThe abbreviation of the English DistributedControlSystem of formula control system, automatic control industry is at home referred to as againFor Distributed Control System), the second frequency converter 204, furnace pressure collector 205, air channel pressure acquisition device206, leaving water temperature collector 207 and air door adjusting valve 208. The first frequency converter 201 and circulating pump 1110Connect. Water flow collector 202 is arranged on outlet pipe 150, to gather water flow signal. DCSControl system 203 and the first frequency converter 201, water flow collector 202, the second frequency converter 204, stoveGun pressure power collector 205, air channel pressure acquisition device 206, leaving water temperature collector 207, air door adjusting valve208 connect respectively. The second frequency converter 204 is connected with air blast 160. Furnace pressure collector 205 and potThe burner hearth of stove 110 connects, for gathering furnace pressure signal. Air channel pressure acquisition device 206 is arranged on air intakeOn pipe 120, for gathering air channel pressure signal. Leaving water temperature collector 207 is arranged on outlet pipe 150Upper, for gathering leaving water temperature signal. Air door adjusting valve 208 is arranged on blast pipe 120.
Based on said structure setting, the utility model can regulate as follows:
(1) boiler self-circulation system regulates
In conjunction with consulting Fig. 3, when external flow is during lower than boiler minimum discharge, open self-circulating pump 1110, makeFlow in boiler 110 remains in safe range. Concrete control strategy is: water flow collector 202Detect boiler water flow, when flow is during lower than a setting value, DCS control system 203 starts circulating pump1110, according to the frequency of water flow adjusting circulating pump 1110, flow system flow is worth as a comparison, works as systemFlow is more than or equal to while setting water flow, stops circulating pump 1110.
(2) blower frequency regulates
In conjunction with consulting Fig. 4, it is for furnace pressure being stabilized in above pressure-fired, subtracting that blower frequency regulatesThe fluctuation of few furnace pressure, ensures the stability of burning. Concrete control strategy is: furnace pressure collector205 detect furnace pressure, and air channel pressure acquisition device 206 detects air channel pressure, 203 of DCS control systemsThe signal gathering according to furnace pressure collector 205 and air channel pressure acquisition device 206 carries out differential pressure calculating, and rootOutput signal to the second frequency converter 204 and carry out blower frequency adjusting according to pressure reduction with setting value.
(3) boiler load regulates
In conjunction with consulting Fig. 5, it is according to user's request load that boiler load regulates, and automatically regulates wind, gas proportioning,Make boiler output meet user's requirement. Concrete control strategy is: detect pot by leaving water temperature collector 207Stove leaving water temperature, the signal that DCS control system is fed back according to leaving water temperature collector 207 and a settingTemperature regulates, and conditioning signal is exported to air door adjusting valve 208, after air door adjusting valve 208 actions, and inspectionSurvey current air quantity, then calculate the gas quantity needing, then control gas control valve 170 according to gas quantityAperture, when load shedding, first regulating gas control valve 170, then damper control valve 208.
In order to realize well control, DCS control system 203 can comprise two controllers, and two controlsDevice processed redundancy each other. Because DCS control system belongs to prior art, about DCS control system in detailStructure does not just repeat at this.
Certainly, the utility model also can have other various embodiments, do not deviate from the utility model spirit andIn the situation of essence, those of ordinary skill in the art are when making and variously changing accordingly according to the utility modelBecome and distortion, but these corresponding changes and distortion all should belong to the guarantor of the appended claim of the utility modelProtect scope.
Claims (4)
1. an automaton for gas-fired water heating boiler, is connected with a steam generator system, and described boiler isTurnkey is drawn together boiler, and described boiler is connected respectively with a blast pipe, a Gas Pipe, a water inlet pipe, an outlet pipe,Described blast pipe is connected with an air blast again, in described Gas Pipe, is provided with gas valve, described water inlet pipe andWater treatment system connects, and is connected by a circulation line between described water inlet pipe and described outlet pipe, described inOn circulation line, be provided with circulating pump, it is characterized in that, described automaton comprises:
The first frequency converter, is connected with described circulating pump;
Water flow collector, is arranged on described outlet pipe; And
DCS control system, is connected respectively with described the first frequency converter and described water flow collector.
2. the automaton of gas-fired water heating boiler according to claim 1, is characterized in that,Also comprise:
The second frequency converter, is connected with described air blast;
Furnace pressure collector, is connected with the burner hearth of described boiler; And
Air channel pressure acquisition device, is arranged on described blast pipe;
Wherein, described the second frequency converter, described furnace pressure collector, described air channel pressure acquisition device is respectivelyBe connected with described DCS control system.
3. the automaton of gas-fired water heating boiler according to claim 1 and 2, its feature existsIn, also comprise:
Leaving water temperature collector, is arranged on described outlet pipe; And
Air door adjusting valve, is arranged on described blast pipe;
Wherein, described leaving water temperature collector, described air door adjusting valve respectively with described DCS control systemConnect.
4. the automaton of gas-fired water heating boiler according to claim 1, is characterized in that,Described DCS control system comprises two controllers, and two controllers redundancy each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052287.9U CN205261939U (en) | 2015-12-16 | 2015-12-16 | Gas -fired hot water boiler's automatic control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052287.9U CN205261939U (en) | 2015-12-16 | 2015-12-16 | Gas -fired hot water boiler's automatic control device |
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| Publication Number | Publication Date |
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| CN205261939U true CN205261939U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521052287.9U Active CN205261939U (en) | 2015-12-16 | 2015-12-16 | Gas -fired hot water boiler's automatic control device |
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| CN (1) | CN205261939U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091072A (en) * | 2016-06-27 | 2016-11-09 | 无锡锡能锅炉有限公司 | A kind of gas fired-boiler heat reutilization system |
| CN106123025A (en) * | 2016-08-22 | 2016-11-16 | 上海汉人科技有限公司 | Multichannel master slave mode combustion control system |
-
2015
- 2015-12-16 CN CN201521052287.9U patent/CN205261939U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106091072A (en) * | 2016-06-27 | 2016-11-09 | 无锡锡能锅炉有限公司 | A kind of gas fired-boiler heat reutilization system |
| CN106123025A (en) * | 2016-08-22 | 2016-11-16 | 上海汉人科技有限公司 | Multichannel master slave mode combustion control system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |