CN201161168Y - Follow-up flow capacity gas mixing machine - Google Patents
Follow-up flow capacity gas mixing machine Download PDFInfo
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- CN201161168Y CN201161168Y CNU2007200975295U CN200720097529U CN201161168Y CN 201161168 Y CN201161168 Y CN 201161168Y CN U2007200975295 U CNU2007200975295 U CN U2007200975295U CN 200720097529 U CN200720097529 U CN 200720097529U CN 201161168 Y CN201161168 Y CN 201161168Y
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Abstract
The utility model provides a follow-up flux gas mixer. A main gas pipe enters in a static mixer through an input flanged ball valve, a main gas pipe filter, an active gas source flowmeter, an active gas source adjusting valve, and an output flanged ball valve in turn; an assistant gas pipe enters in the static mixer through an input flanged ball valve, an assistant gas pipe filter, a pressure adjuster, a follow-up gas source flowmeter, a follow-up gas source adjusting valve, an emergency shut valve, a check valve, and an output flanged ball valve in turn; the output pipe of the static mixer outputs mixed fuel gases through the flanged ball valve. The follow-up flux gas mixer uses a single-loop closed-loop negative feedback fixed-value control system of the active flux and a concatenated variable ratio control system of the follow-up flux which consists of two closed-loop negative feedbacks to control the mixture of two gases by variable proportion and variable flux, is adaptive to the pressure and the flux of various gas sources and the fluctuation of the thermal value, particularly can precisely control the mixture proportion of two gas sources, can control the gas mixture precision within 3 percent, and then provides high-quality fuel gas for users needing to precisely control the combustion.
Description
Technical field
The utility model belongs to chemical machinery, particularly a kind of servo-actuated flow air mixing machine.
Background technology
No matter be the industrial production or the gas supply system of residential building, because the variation of source of the gas quality, the change that causes air mixture pressure, flow and the calorific value of air supply system output with the variation and the other factors of gas load, can cause very big influence to resident living and industrial production, even can be because two kinds of gas ratios are lacked of proper care in the air mixture, influence is produced or is caused the accident.Therefore combustion gas being mixed gas equipment has higher requirement.General air mixing machine is because the restriction of structure and principle, and it is relatively poor to mix the gas precision, and also very poor to the adaptability of pressure, flow and the calorific value fluctuation of source of the gas.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of servo-actuated flow air mixing machine is provided.
The technical solution of the utility model is:
A kind of servo-actuated flow air mixing machine, it is characterized in that: main tracheae connects main tracheae filter through the suction flange ball valve, main tracheae filter connects initiatively gas source and flow amount meter of FT101, FT101 initiatively gas source and flow amount meter connects initiatively source of the gas control valve of FV, FV initiatively source of the gas control valve connects the outlet(discharge) flange ball valve, and the outlet(discharge) flange ball valve connects the static mixer first input end; The suction flange ball valve front end of main tracheae is connected to the bypass of outlet(discharge) flange ball valve rear end as main tracheae through the bypass flanged ball valve; Static mixer output connects mixture output tube.
Accessory trachea is through suction flange ball valve auxiliary connection tracheae filter, the accessory trachea filter connects pressure regulator, pressure regulator output connects the driven gas source and flow amount meter of FT102, the driven gas source and flow amount meter of FT102 connects the driven source of the gas control valve of HV, the driven source of the gas control valve of HV connects the S quick action emergency valve, the output of S quick action emergency valve connects check-valves, and the check-valves other end connects the outlet(discharge) flange ball valve, and the outlet(discharge) flange ball valve connects static mixer second input; The suction flange ball valve front end of accessory trachea is connected to the bypass of the rear end of outlet(discharge) flange ball valve as accessory trachea through the bypass flanged ball valve;
FT101 initiatively gas source and flow amount meter connects initiatively gas source and flow amount integrating instrument of FIQ101, and FIQ101 initiatively gas source and flow amount integrating instrument connects the FIC101 master controller, and the FIC101 master controller connects initiatively source of the gas control valve of FV.
The driven gas source and flow amount meter of FT102 connects the driven gas source and flow amount integrating instrument of FIQ102, and the driven gas source and flow amount integrating instrument of FIQ102 connects the HIC102 slave controller; FIQ101 initiatively gas source and flow amount integrating instrument connects the HIC102 slave controller; The HT101 caloric value instrument that connects on the static mixer efferent duct connects HIA101 calorific value Displaying Meter, and HIA101 calorific value Displaying Meter connects the HIC102 slave controller; The HIC102 slave controller connects the driven source of the gas control valve of HV.
The AIO101 oxygen that connects on the static mixer efferent duct divides instrument to connect the quick action emergency valve interlock control system, and the quick action emergency valve interlock control system connects the S quick action emergency valve.
The rear and front end of static mixer connects Δ P difference gauge by pipeline, and pipeline is provided with P1 ~ P12 pressure gauge, PT101 ~ PT106 pressure sensor, PIA101 ~ PIA106 pressure display instrument table.
Its control system is connected to: initiatively FT101 is sent in the main measurement change of flow object F1 connection, main measurement becomes send FT101 output feedback to connect master controller FIC101 measurement input, master controller FIC101 output connects control valve FV, control valve FV output connects initiatively flow object F1, and initiatively flow object F1 connects main object blender first input end; The output of main object blender connects calorific value measurement change and send HT101, calorific value is measured to become and is sent the HT101 output calorific value control module PID1 that feedback connects in the slave controller HIC102 to measure input, calorific value control module PID1 output connects the multiplier in the slave controller HIC102, the main measurement becomes the multiplier that send in the FT101 output connection slave controller HIC102, and the output of multiplier connects the given input of ratio control module PID2 in the slave controller HIC102; The output connection of driven flow object F2 is sent FT102 from measuring to become, send the FT102 output ratio control module PID2 that feedback connects in the slave controller HIC102 to measure input from measuring to become, ratio control module PID2 output connects control valve HV, control valve HV output connects driven flow object F2, and driven flow object F2 output connects second input of main object blender.
The utility model effect is:
The utility model OAM series servo-actuated flow air mixing machine is that the combustion gas of a kind of control with changed scale, unsteady flow amount mixes gas equipment.High heating value combustion gas and fuel gas with low heat value (or do not have calorific value gas, as air) enter static mixer by a certain percentage to be mixed, output meet customer requirements, different calorific values and adapt to the air mixture of load variations.Because its unique control principle and structure, can adapt to the fluctuation of pressure, flow and the calorific value of various sources of the gas, the most important thing is accurately to control the mixed proportion of two kinds of sources of the gas, mix the gas precision and can be controlled within 3%, thereby the user who accurately controls burning for needs provides high-quality burning gases.
Servo-actuated flow air mixing machine advantage and effect:
(1) on system architecture, this control system has a single-circuit close loop negative feedback fixed set point control system to be used for initiatively gas source and flow amount of control, therefore it is more convenient to carry load down, as long as change the set-point of master controller FIC101 lentamente, just can carry and fall initiatively gas source and flow amount, driven gas source and flow amount is also just carried from motion tracking and being fallen simultaneously, and keeps both ratios constant, to adapt to the needs of various loads.
(2) on system architecture, this control system is used to control driven gas source and flow amount by a cascade control system of being made up of two closed loop negative feedback systems.This cascade control system has the PID control module of two closed-loop paths and two tandem workings, realizes the definite value control to heat vale of mixture.
(3) on system performance, driven gas source and flow amount control system has been improved the characteristic of controlled device on the one hand owing to the introducing of subloop, and control procedure is accelerated, and has the effect of leading control, thereby overcomes hysteresis effectively, has improved the control quality; Make system have certain adaptive ability on the other hand, can overcome strong and frequent interference, and adapt to the bigger variation of load and operating condition.
Description of drawings
Fig. 1 is servo-actuated flow air mixing machine process pipe and control flow chart,
Fig. 2 is a servo-actuated flow air mixing machine control system calcspar,
Fig. 3 is the quick action emergency valve interlock control system.
Among the figure: 1 flanged ball valve, 2 filters, 3 static mixers, 4 pressure regulators, 5 check-valves, 6 quick action emergency valve interlock control systems, the S quick action emergency valve, FV is the source of the gas control valve initiatively, the driven source of the gas control valve of HV, Δ P difference gauge, P1 ~ P12 pressure gauge, PT101 ~ PT106 pressure sensor, FT101 is the gas source and flow amount meter initiatively, the driven gas source and flow amount meter of FT102, the HT101 caloric value instrument, OT101 oxygen quantity sensor, AIO101 oxygen divides instrument, HIA calorific value Displaying Meter, PIA101 ~ PIA106 pressure display instrument table, FIQ101 is the gas source and flow amount integrating instrument initiatively, the driven gas source and flow amount integrating instrument of FIQ102, FIC101 is the gas source and flow amount controller initiatively, the driven gas source and flow amount controller of HIC102, RT fuse, the D1 oxygen amount indicator lamp that transfinites, D2 quick action emergency valve relay indicating light, the KA1-KA4 relay, K oxygen amount interlocking switch, QA quick action emergency valve start button, PB ann silence button, the BZ alarm buzzer.
The specific embodiment
A kind of servo-actuated flow air mixing machine as shown in Figure 1, main tracheae connects main tracheae filter through the suction flange ball valve, main tracheae filter connects initiatively gas source and flow amount meter of FT101, FT101 initiatively gas source and flow amount meter connects initiatively source of the gas control valve of FV, FV initiatively source of the gas control valve connects the outlet(discharge) flange ball valve, and the outlet(discharge) flange ball valve connects the static mixer first input end; The suction flange ball valve front end of main tracheae is connected to the bypass of outlet(discharge) flange ball valve rear end as main tracheae through the bypass flanged ball valve; Static mixer output connects mixture output tube.
Accessory trachea is through suction flange ball valve auxiliary connection tracheae filter, the accessory trachea filter connects pressure regulator, pressure regulator output connects the driven gas source and flow amount meter of FT102, the driven gas source and flow amount meter of FT102 connects the driven source of the gas control valve of HV, the driven source of the gas control valve of HV connects the S quick action emergency valve, the output of S quick action emergency valve connects check-valves, and the check-valves other end connects the outlet(discharge) flange ball valve, and the outlet(discharge) flange ball valve connects static mixer second input; The suction flange ball valve front end of accessory trachea is connected to the bypass of the rear end of outlet(discharge) flange ball valve as accessory trachea through the bypass flanged ball valve;
FT101 initiatively gas source and flow amount meter connects initiatively gas source and flow amount integrating instrument of FIQ101, and FIQ101 initiatively gas source and flow amount integrating instrument connects the FIC101 master controller, and the FIC101 master controller connects initiatively source of the gas control valve of FV.
The driven gas source and flow amount meter of FT102 connects the driven gas source and flow amount integrating instrument of FIQ102, and the driven gas source and flow amount integrating instrument of FIQ102 connects the HIC102 slave controller; FIQ101 initiatively gas source and flow amount integrating instrument connects the HIC102 slave controller; The HT101 caloric value instrument that connects on the static mixer efferent duct connects HIA101 calorific value Displaying Meter, and HIA101 calorific value Displaying Meter connects the HIC102 slave controller; The HIC102 slave controller connects the driven source of the gas control valve of HV.
The AIO101 oxygen that connects on the static mixer efferent duct divides instrument to connect the quick action emergency valve interlock control system, and the quick action emergency valve interlock control system connects the S quick action emergency valve.
The rear and front end of static mixer connects Δ P difference gauge by pipeline, and pipeline is provided with P1 ~ P12 pressure gauge, PT101 ~ PT106 pressure sensor, PIA101 ~ PIA106 pressure display instrument table.
Its control system as shown in Figure 2 is connected to: initiatively FT101 is sent in the main measurement change of flow object F1 connection, main measurement becomes send FT101 output feedback to connect master controller FIC101 measurement input, master controller FIC101 output connects control valve FV, control valve FV output connects initiatively flow object F1, and initiatively flow object F1 connects main object blender first input end; The output of main object blender connects calorific value measurement change and send HT101, calorific value is measured to become and is sent the HT101 output calorific value control module PID1 that feedback connects in the slave controller HIC102 to measure input, calorific value control module PID1 output connects the multiplier in the slave controller HIC102, the main measurement becomes the multiplier that send in the FT101 output connection slave controller HIC102, and the output of multiplier connects the given input of ratio control module PID2 in the slave controller HIC102; The output connection of driven flow object F2 is sent FT102 from measuring to become, send the FT102 output ratio control module PID2 that feedback connects in the slave controller HIC102 to measure input from measuring to become, ratio control module PID2 output connects control valve HV, control valve HV output connects driven flow object F2, and driven flow object F2 output connects second input of main object blender.
Its servo-actuated flow air mixing machine control system:
Servo-actuated flow air mixing machine can be realized high heating value combustion gas and the automatic blending of fuel gas with low heat value (or air) in static mixer.The high heating value combustion gas is the active source of the gas generally speaking, and another road gas is driven source of the gas.
(1) single loop control system of active gas source and flow amount: initiatively the flow control system of source of the gas is a single-circuit close loop negative feedback fixed set point control system, realizes the definite value of active gas source and flow amount is regulated.Detect the measured value of the currency (through the standard state flow behind the temperature and pressure compensation) of active gas source and flow amount by active gas source and flow amount meter FT101 as master controller FIC101, master controller compares this measured value and obtains flow deviation with active gas source and flow amount setting value, and this deviation is carried out output 4-20mA control signal after P, I, the D computing deliver to the flow control valve FV that is positioned on the source of the gas pipeline initiatively, thereby its aperture is changed what of amount that control enters the active source of the gas of static mixer are realized regulating automatically continuously the active gas source and flow amount.
(2) the no-load voltage ratio value control system of driven gas source and flow amount: this system is a cascade control system of being made up of two closed loop negative feedback systems.Major loop is a fixed set point control system: detect the measured value of the currency of heat vale of mixture as the calorific value control module PID1 among the slave controller HIC102 by being installed in the caloric value instrument HT101 that mixes the gas system outlet, PID1 compares this measured value and calorific value setting value and obtains the calorific value deviation, and this deviation is carried out being input to after P, I, the D computing multiplier among the slave controller HIC102 as the ratio of active source of the gas and driven gas source and flow amount.Subloop is a following control system: detect initiatively gas source and flow amount currency (through the standard state flow behind the temperature and pressure compensation) by active gas source and flow amount meter FT101, after the control output that is input to multiplier among the slave controller HIC102 and calorific value control module PID1 is multiplied each other in multiplier as the setting value of ratio control module PID2, detect driven gas source and flow amount currency (through the standard state flow behind the temperature and pressure compensation) by driven gas source and flow amount meter FT102, be input to the measured value of slave controller HIC102 as ratio control module PID2, PID2 compares measured value and setting value and obtains flow deviation, carry out P, I, output 4-20mA control signal is to the control valve HV that is positioned on the driven source of the gas pipeline after the D calculation process, thereby its aperture is changed control driven source of the gas to enter what of amount of static mixer, heat vale of mixture is realized regulating automatically.For the system of such formation, when the active gas source and flow amount changed, driven gas source and flow amount can in time be followed the tracks of variation; When causing that owing to the variation of source of the gas calorific value mixing gas system outlet calorific value changes, again heat vale of mixture is withdrawn on the setting value by revising driven gas source and flow amount again, thereby has improved control accuracy greatly.
(3) servo-actuated flow air mixing machine is reported to the police and safety interlocking: referring to accompanying drawing 3 quick action emergency valve interlock control systems.
When driven source of the gas was air, because the mixture that various imflammable gas and air form has explosion limit scope separately, national regulation requirement air rate example must not be lower than 1.5 times of gaseous mixture UEL.And oxygen content has corresponding relation in air rate example and the gaseous mixture, by detection with control the generation that oxygen content in the gaseous mixture can be avoided accident, guarantees safety.
In the outlet that mixes the gas system oxygen content that oxygen divides instrument AIO101 to detect gaseous mixture is set, when generation oxygen content parameter transfinites, in the time of sound and light alarm, be in " input " position if mix the interlocking switch K of gas system, air is cut off in the then action of the quick action emergency valve S on the air pipe line, guarantees safety.When fault is got rid of the releasing of oxygen content parameter overload alarm, need click quick action emergency valve start button QA, quick action emergency valve can reopen, and reenters mixed gaseity.
Claims (2)
1, a kind of servo-actuated flow air mixing machine, it is characterized in that: main tracheae connects main tracheae filter through the suction flange ball valve, main tracheae filter connects initiatively gas source and flow amount meter (FT101), initiatively gas source and flow amount meter (FT101) connects initiatively source of the gas control valve (FV), initiatively source of the gas control valve (FV) connects the outlet(discharge) flange ball valve, and the outlet(discharge) flange ball valve connects the static mixer first input end; The suction flange ball valve front end of main tracheae is connected to the bypass of outlet(discharge) flange ball valve rear end as main tracheae through the bypass flanged ball valve; Static mixer output connects mixture output tube;
Accessory trachea is through suction flange ball valve auxiliary connection tracheae filter, the accessory trachea filter connects pressure regulator, pressure regulator output connects driven gas source and flow amount meter (FT102), driven gas source and flow amount meter (FT102) connects driven source of the gas control valve (HV), driven source of the gas control valve (HV) connects quick action emergency valve (S), quick action emergency valve (S) output connects check-valves, and the check-valves other end connects the outlet(discharge) flange ball valve, and the outlet(discharge) flange ball valve connects static mixer second input; The suction flange ball valve front end of accessory trachea is connected to the bypass of the rear end of outlet(discharge) flange ball valve as accessory trachea through the bypass flanged ball valve;
Initiatively gas source and flow amount meter (FT101) connects initiatively gas source and flow amount integrating instrument (FIQ101), and initiatively gas source and flow amount integrating instrument (FIQ101) connects master controller (FIC101), and master controller (FIC101) connects initiatively source of the gas control valve (FV);
Driven gas source and flow amount meter (FT102) connects driven gas source and flow amount integrating instrument (FIQ102), and driven gas source and flow amount integrating instrument (FIQ102) connects slave controller (HIC102); Initiatively gas source and flow amount integrating instrument (FIQ101) connects slave controller (HIC102); The caloric value instrument that connects on the static mixer efferent duct (HT101) connects calorific value Displaying Meter (HIA101), and calorific value Displaying Meter (HIA101) connects slave controller (HIC102); Slave controller (HIC102) connects driven source of the gas control valve (HV);
The oxygen that connects on the static mixer efferent duct divides instrument to connect quick action emergency valve (AIO101) interlock control system, and the quick action emergency valve interlock control system connects quick action emergency valve (S);
The rear and front end of static mixer connects difference gauge (Δ P) by pipeline, and pipeline is provided with pressure gauge (P1 ~ P12), pressure sensor (PT101 ~ PT106), pressure display instrument table (PIA101 ~ PIA106).
2, servo-actuated flow air mixing machine according to claim 1, it is characterized in that: its control system is connected to: initiatively (FT101) sent in the main measurement change of flow object (F1) connection, main measurement becomes send (FT101) output feedback to connect master controller (FIC101) measurement input, master controller (FIC101) output connects control valve (FV), control valve (FV) output connects initiatively flow object (F1), and initiatively flow object (F1) connects main object blender first input end; The output of main object blender connects calorific value measurement change and send (HT101), calorific value is measured to become and is sent (HT101) output calorific value control module (PID1) that feedback connects in the slave controller (HIC102) to measure input, calorific value control module (PID1) output connects the multiplier in the slave controller (HIC102), the main measurement becomes the multiplier that send in (FT101) the output connection slave controller (HIC102), and the output of multiplier connects the given input of ratio control module (PID2) in the slave controller (HIC102); The output connection of driven flow object (F2) is sent (FT102) from measuring to become, send (FT102) output ratio control module (PID2) that feedback connects in the slave controller (HIC102) to measure input from measuring to become, ratio control module PID2 output connects control valve (HV), control valve (HV) output connects driven flow object (F2), and driven flow object output (F2) connects second input of main object blender.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200975295U CN201161168Y (en) | 2007-11-07 | 2007-11-07 | Follow-up flow capacity gas mixing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200975295U CN201161168Y (en) | 2007-11-07 | 2007-11-07 | Follow-up flow capacity gas mixing machine |
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| CN201161168Y true CN201161168Y (en) | 2008-12-10 |
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| CNU2007200975295U Expired - Fee Related CN201161168Y (en) | 2007-11-07 | 2007-11-07 | Follow-up flow capacity gas mixing machine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101903840B (en) * | 2007-12-27 | 2012-09-05 | 株式会社堀场Stec | Flow rate ratio controlling apparatus |
| CN102895890A (en) * | 2012-09-03 | 2013-01-30 | 杭州萧山管道燃气发展有限公司 | Mixed gas mixing pipe structure for natural gas and biogas, and preparation method thereof |
| CN107255275A (en) * | 2017-05-24 | 2017-10-17 | 江苏师范大学 | A kind of light energy-saving leak detection formula natural gas boiler burner |
| CN108778478A (en) * | 2016-03-23 | 2018-11-09 | 阿法拉伐股份有限公司 | Device and method for the particle in dispersing fluid |
| US10857507B2 (en) | 2016-03-23 | 2020-12-08 | Alfa Laval Corporate Ab | Apparatus for dispersing particles in a liquid |
-
2007
- 2007-11-07 CN CNU2007200975295U patent/CN201161168Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101903840B (en) * | 2007-12-27 | 2012-09-05 | 株式会社堀场Stec | Flow rate ratio controlling apparatus |
| CN102895890A (en) * | 2012-09-03 | 2013-01-30 | 杭州萧山管道燃气发展有限公司 | Mixed gas mixing pipe structure for natural gas and biogas, and preparation method thereof |
| CN108778478A (en) * | 2016-03-23 | 2018-11-09 | 阿法拉伐股份有限公司 | Device and method for the particle in dispersing fluid |
| US10857507B2 (en) | 2016-03-23 | 2020-12-08 | Alfa Laval Corporate Ab | Apparatus for dispersing particles in a liquid |
| CN107255275A (en) * | 2017-05-24 | 2017-10-17 | 江苏师范大学 | A kind of light energy-saving leak detection formula natural gas boiler burner |
| CN107255275B (en) * | 2017-05-24 | 2019-02-26 | 江苏师范大学 | A kind of light energy-saving leak detection formula natural gas boiler burner |
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Granted publication date: 20081210 Termination date: 20141107 |
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| EXPY | Termination of patent right or utility model |