CN202330328U - Combustion control system for building element fire-resistance test furnace - Google Patents
Combustion control system for building element fire-resistance test furnace Download PDFInfo
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- CN202330328U CN202330328U CN2011203018437U CN201120301843U CN202330328U CN 202330328 U CN202330328 U CN 202330328U CN 2011203018437 U CN2011203018437 U CN 2011203018437U CN 201120301843 U CN201120301843 U CN 201120301843U CN 202330328 U CN202330328 U CN 202330328U
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Abstract
The utility model discloses a combustion control system for a building element fire-resistance test furnace. An inlet of a gas total pipeline is connected with a manual ball valve and then sequentially connected with a gas filter, a high-pressure pressure gauge, a quick cut-off valve, a gas depressurizing valve, a gas high/low-pressure switch and a first branch point of the pipeline; the first branch point of the pipeline passes through a first ball valve and an automatic bleeding valve and is connected with a bleeding pipe and evacuated; the first branch point of the pipeline is connected with a low-pressure pressure gauge, an electromagnetic cut-off valve and a second branch point of the pipeline; the second branch point of the pipeline passes through a second ball valve and a first electromagnetic valve and is connected with the bleeding pipe and evacuated; the first electromagnetic valve is also connected with a leakage detector; the second branch point of the pipeline is an inlet of a gas branch pipe; the inlet of the gas branch pipe is connected with a third ball valve, passes through a second electromagnetic valve, a fourth ball valve, a third electromagnetic valve, a proportional valve, a gas flow fine adjustment valve and a gas corrugated pipe, and then is connected to a nozzle; and the nozzle is controlled by a nozzle controller through an ignition signal and a fire detection signal.
Description
Technical field
The utility model belongs to building detection technique field, particularly a kind of building element fire test furnace combustion control system.
Background technology
(GB/T 9978.1～8-2008), and trial furnace can adopt light diesel fuel, rock gas, coal gas, liquefied gas or propane flammable gas to act as a fuel according to building element fire testing method.The air mixed that fuel is sent here to nozzle and high pressure blower through pipeline transportation by store oil (gas) jar sprays into the trial furnace internal combustion.The flue gas that burning produces is discharged after flue shutter advances people's environmental protection equipment by flue.The fire performance test should be adopted naked light heat test stove, makes test specimen receive the high temperature action similar with actual fire.But there is following problem in existing system:
The burner of trial furnace belongs to the long flame type, and the length of flame is longer, in process of the test, might influence the normal collection of electric thermo-couple temperature; The combustion gas of combustion control system and AIR Proportional need manual adjustments, and can't regulate in proportion, and fuel gas buring efficient is lower, and the insufficient meeting of the burning of combustion gas makes and produces black smoke in the stove, can disturb normal temperature-rise period simultaneously, influences accuracy of experimental results; The temperature control mode of combustion control system is manually, needs the long operating experience of accumulation could grasp the control mode of temperature rise in the stove; Combustion control system is not equipped with safety features such as flame detector, the protection of combustion gas high-low pressure, combustion gas strainer valve, and the security consideration of combustion control system is inconsiderate, in the security of equipment, too much relies on artificial operation, has certain potential safety hazard.
The utility model content
The purpose of the utility model provides a kind of building element fire test furnace combustion control system, and to solve in the existing system, flame is long; Influence the normal temperature collection of thermopair; Air-fuel ratio can't be regulated, and combustion gas can't fully be burnt, and temperature control needs manually to accomplish; Combustion control system lacks safety feature, has the problem of certain potential safety hazard.
The technical scheme of the utility model is a kind of building element fire test furnace combustion control system; The combustion gas main pipe rail of said combustion control system comprises; Behind the moving ball valve of total tube inlet catcher, first take-off point of the gas filter that is linked in sequence, blowout-back pressure gauge, repid cut-off valve, combustion gas reduction valve, combustion gas height/low-pressure switch to pipeline;
First take-off point of pipeline is through first ball valve and diffuse the emptying of valve to exhaust stack automatically;
First take-off point of pipeline connects second take-off point of low pressure gauge, electromagnetic shut-off valve to pipeline;
Second take-off point of pipeline connects the exhaust stack emptying through second ball valve and first solenoid valve, and first solenoid valve also connects a leakage detector;
Second take-off point of pipeline is combustion gas and props up tube inlet, after this combustion gas is propped up tube inlet and connect the 3rd ball valve, behind second solenoid valve, the 4th ball valve, the 3rd solenoid valve, proportioning valve, gas flow accurate adjustment valve and gas bellows, inserts burner;
Burner receives burner controller control through ignition signal and fire inspection signal, and connects a smoke evacuation pipeline;
Burner controller is also controlled the switch of the 3rd solenoid valve, and has the PLC system on a backstage;
Air pipe line comprises that air gets into from the combustion fan of band filter screen and exhaust box; Through inserting burner behind tensimeter, height/low-voltage protective switch, electric butterfly valve, air mass flow accurate adjustment valve and the air corrugated tube, the input end of air accurate adjustment valve also inserts the adjustable side of proportioning valve.
Preferably, said burner adopts short flame gas burner.
Preferably, said burner is installed in the both sides of trial furnace.
Preferably, the quantity of described combustion control system is 8 covers in a trial furnace, and 8 burners are distributed in different temperature controls zone from top to bottom, both sides in the stove.
The utility model adopts the short burnout mode, eliminates the influence of flame to thermopair, improves the accuracy of test data.The automatic control of air-fuel ratio guaranteed fuel gas buring fully, reduced the consumption of combustion gas, reduced the generation of inner flue gas of the stove.The temperature controlling mode be designed to automatically with manually all can, improved work efficiency, make operation become easy, reduced the error of test data that human error causes.The requirement of security conform european standard has reduced potential safety hazard.
Description of drawings
Fig. 1 is that the system of the utility model one embodiment forms synoptic diagram
Wherein, 1---manual ball valve, 2---gas filter, 3---blowout-back pressure gauge, 4 repid cut-off valves, 5---the combustion gas reduction valve; 6---combustion gas height/low-pressure switch, 7---first ball valve, 8---diffusing valve automatically, 9---low pressure gauge, 10---first solenoid valve, 11---second ball valve; 12---electromagnetic shut-off valve, 13---leakage detector, 14---the 3rd ball valve, 15---second solenoid valve, 16---the 4th ball valve; 17---the 3rd solenoid valve, 18---proportioning valve, 19---gas flow accurate adjustment valve, 20---gas bellows, 21---burner; 22---the air corrugated tube, 23---burner controller, 24---air mass flow accurate adjustment valve, 25---electric butterfly valve, 26---height/low-voltage protective switch; 27---tensimeter, 28---combustion fan, 29---band filter screen exhaust box, the 30PLC system, 31---the total tube inlet of heating furnace combustion gas; 32---the exhaust stack emptying, 33---the smoke evacuation pipeline, 34---tube inlet is propped up in combustion gas, and 35---ignition signal, 36---fire inspection signal.
Embodiment
As shown in Figure 1; The building element fire test furnace combustion control system of the utility model; The combustion gas main pipe rail of said combustion control system comprises; Behind the moving ball valve of total tube inlet catcher, first take-off point of the gas filter that is linked in sequence, blowout-back pressure gauge, repid cut-off valve, combustion gas reduction valve, combustion gas height/low-pressure switch to pipeline; First take-off point of pipeline is through first ball valve and diffuse the emptying of valve to exhaust stack automatically; First take-off point of pipeline connects second take-off point of low pressure gauge, electromagnetic shut-off valve to pipeline; Second take-off point of pipeline connects the exhaust stack emptying through second ball valve and first solenoid valve, and first solenoid valve also connects a leakage detector; Second take-off point of pipeline is combustion gas and props up tube inlet, after this combustion gas is propped up tube inlet and connect the 3rd ball valve, behind second solenoid valve, the 4th ball valve, the 3rd solenoid valve, proportioning valve, gas flow accurate adjustment valve and gas bellows, inserts burner; Burner receives burner controller control through ignition signal and fire inspection signal, and connects a smoke evacuation pipeline; Burner controller is also controlled the switch of the 3rd solenoid valve, and has the PLC system on a backstage; Air pipe line comprises that air gets into from the combustion fan of band filter screen and exhaust box; Through inserting burner behind tensimeter, height/low-voltage protective switch, electric butterfly valve, air mass flow accurate adjustment valve and the air corrugated tube, the input end of air accurate adjustment valve also inserts the adjustable side of proportioning valve.Burner adopts short flame gas burner, is installed in the both sides of trial furnace.The quantity of described combustion control system can be 8 covers in a trial furnace, and 8 burners are distributed in different temperature controls zone from top to bottom, both sides in the stove.
Because point for measuring temperature is more in the body of heater, consider that flame avoids influencing temperature thermocouple as far as possible, improve the principle of accuracy.Adopt short flame gas burner, be installed in the both sides of body of heater.Combustion flame length is about about 100mm, eliminates flame to thermopair influence in the stove, more can reflect the true temperature of burner hearth.Use in the heat technology that the suitable temperature of apolegamy short flame gas burner is 1200 degree, the ability conformance with standard is to the requirement of heating curve.
The combustion air pipeline is equipped with air motorized valve, manual air butterfly valve, air/fuel proportioning valve before the mouth, can realize the automatic fine tuning of continuous ratio formula combustion control mode and combustion air volume.The German original-pack burner head that adopts Advanced Manufacturing Technology to make can guarantee that air and combustion gas fully mix, and guarantees sufficient combustion.Under the different flow condition, (heat up and holding stage), manifold road pressure can keep constant, brings into play maximum function for the abundant burning of burner basic assurance is provided.
On every cover combustion control system, devices such as air/fuel proportioning valve, flow control valve, burner controller all have been equipped with; Make combustion gas can under security monitoring, obtain best fired state all the time; And can use software to automatically adjust through the supply of control system to combustion gas and air, with the requirement of the constant and heating curve that satisfies the air/fuel ratio.For guaranteeing that this combustion control system can satisfy the intensification requirement of the curve that is rapidly heated, disposed 8 short flame gas burners in the scheme, Yi Bian respectively dispose 4, and body of heater is divided into the independent respectively control of 4 temperature ranges from the bottom up, to guarantee the homogeneity of temperature in the stove.
The combustion gas main line is partly formed: hand valve, filtrator, stop valve, pressure maintaining valve, high-low pressure pressure switch, diffuse valve and hand valve etc., can realize that filtration, pressure regulation, high-low pressure and other malfunction function of automatically cutting off are to guarantee safe combustion.Solenoid valve and seal adopt special material to make, and guarantee that product has good sealing property under the state of long-term work, and solenoid valve also can guarantee stable the use under the condition of unlatching and frequent movement of can switching on for a long time.Security meet " European Union machinery industry standard " (89/393/EWG) with the requirement of " industrial thermal equipment standard " (EN 746).
Claims (4)
1. building element fire test furnace combustion control system is characterized in that:
The combustion gas main pipe rail of said combustion control system comprises, behind the moving ball valve of total tube inlet catcher, the gas filter that is linked in sequence, blowout-back pressure gauge, repid cut-off valve, combustion gas reduction valve, the combustion gas height/the low-pressure switch extremely
First take-off point of pipeline;
First take-off point of pipeline is through first ball valve and diffuse the emptying of valve to exhaust stack automatically;
First take-off point of pipeline connects second take-off point of low pressure gauge, electromagnetic shut-off valve to pipeline;
Second take-off point of pipeline connects the exhaust stack emptying through second ball valve and first solenoid valve, and first solenoid valve also connects a leakage detector;
Second take-off point of pipeline is combustion gas and props up tube inlet, after this combustion gas is propped up tube inlet and connect the 3rd ball valve, behind second solenoid valve, the 4th ball valve, the 3rd solenoid valve, proportioning valve, gas flow accurate adjustment valve and gas bellows, inserts burner;
Burner receives burner controller control through ignition signal and fire inspection signal, and connects a smoke evacuation pipeline;
Burner controller is also controlled the switch of the 3rd solenoid valve, and has the PLC system on a backstage;
Air pipe line comprises that air gets into from the combustion fan of band filter screen and exhaust box; Through inserting burner behind tensimeter, height/low-voltage protective switch, electric butterfly valve, air mass flow accurate adjustment valve and the air corrugated tube, the input end of air accurate adjustment valve also inserts the adjustable side of proportioning valve.
2. building element fire test furnace combustion control system as claimed in claim 1 is characterized in that: said burner adopts short flame gas burner.
3. building element fire test furnace combustion control system as claimed in claim 2, it is characterized in that: said burner is installed in the both sides of trial furnace.
4. building element fire test furnace combustion control system as claimed in claim 1 is characterized in that: the quantity of described combustion control system is 8 covers in a trial furnace, and 8 burners are distributed in different temperature controls zone from top to bottom, both sides in the stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203018437U CN202330328U (en) | 2011-08-18 | 2011-08-18 | Combustion control system for building element fire-resistance test furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203018437U CN202330328U (en) | 2011-08-18 | 2011-08-18 | Combustion control system for building element fire-resistance test furnace |
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| Publication Number | Publication Date |
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| CN202330328U true CN202330328U (en) | 2012-07-11 |
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| CN2011203018437U Expired - Lifetime CN202330328U (en) | 2011-08-18 | 2011-08-18 | Combustion control system for building element fire-resistance test furnace |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435425A (en) * | 2016-11-28 | 2017-02-22 | 无锡市莱达热工工程有限公司 | Header pipe system of hot galvanizing furnace |
| CN109437107A (en) * | 2018-11-23 | 2019-03-08 | 上海天三自控有限公司 | A kind of automatic furnace gate valve for hydrochloric acid synthetic furnace |
| CN109488884A (en) * | 2019-01-14 | 2019-03-19 | 长江大学 | A kind of device that gives out of gas of anti-leak |
| CN110108546A (en) * | 2019-05-21 | 2019-08-09 | 应急管理部天津消防研究所 | A kind of more test face building element fire resistance test devices |
| CN110806424A (en) * | 2019-11-04 | 2020-02-18 | 应急管理部天津消防研究所 | Fire resistance test device of accurate control furnace pressure |
| CN111457733A (en) * | 2019-01-22 | 2020-07-28 | 上海闵予软件科技有限公司 | Energy-saving environment-friendly combustion heating system of building component fire-resistant experimental furnace |
-
2011
- 2011-08-18 CN CN2011203018437U patent/CN202330328U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106435425A (en) * | 2016-11-28 | 2017-02-22 | 无锡市莱达热工工程有限公司 | Header pipe system of hot galvanizing furnace |
| CN109437107A (en) * | 2018-11-23 | 2019-03-08 | 上海天三自控有限公司 | A kind of automatic furnace gate valve for hydrochloric acid synthetic furnace |
| CN109437107B (en) * | 2018-11-23 | 2023-11-21 | 上海天三自控有限公司 | Automatic furnace door valve for hydrochloric acid synthesis furnace |
| CN109488884A (en) * | 2019-01-14 | 2019-03-19 | 长江大学 | A kind of device that gives out of gas of anti-leak |
| CN111457733A (en) * | 2019-01-22 | 2020-07-28 | 上海闵予软件科技有限公司 | Energy-saving environment-friendly combustion heating system of building component fire-resistant experimental furnace |
| CN110108546A (en) * | 2019-05-21 | 2019-08-09 | 应急管理部天津消防研究所 | A kind of more test face building element fire resistance test devices |
| CN110806424A (en) * | 2019-11-04 | 2020-02-18 | 应急管理部天津消防研究所 | Fire resistance test device of accurate control furnace pressure |
| CN110806424B (en) * | 2019-11-04 | 2022-04-26 | 应急管理部天津消防研究所 | Fire resistance test device of accurate control furnace pressure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
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| CX01 | Expiry of patent term |