CN103631282A - Pneumatic servo pressurization controller - Google Patents
Pneumatic servo pressurization controller Download PDFInfo
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- CN103631282A CN103631282A CN201310652037.8A CN201310652037A CN103631282A CN 103631282 A CN103631282 A CN 103631282A CN 201310652037 A CN201310652037 A CN 201310652037A CN 103631282 A CN103631282 A CN 103631282A
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Abstract
The invention relates to a pneumatic servo pressurization controller which is used for testing structural strength of sealed containers and is mainly used for controlling pressurization loading for airtight loading points of sealed containers and the like. The pneumatic servo pressurization controller has the advantages that electric and pneumatic servo control execution components are respectively used for pressurization control and pressure relief control, a special control circuit is compatible to a remote coordination loading control system, accordingly, instruction signals inputted by the remote control system can be processed, actions between the special control circuit and the remote coordination loading control system can be coordinated, and a pressure servo proportional control effect can be realized for the airtight loading points; the pneumatic servo pressurization controller is simple in operation, high in control precision, loading speed, reliability and safety and good in following feature, and a control mode is advanced.
Description
Technical field
The invention belongs to pneumatic servo control technology, be specifically related to a kind of pneumatic servo pressurising controller.
Background technology
Pneumatic servo pressurising is widely used in the various pressurisings to closed container to be controlled, and in Plenum Process, need to control pressurising size, pressurising control accuracy, pressurising speed and followability.
For example in the static(al)/torture test of complete aircraft structure, not only more and more higher to the Loading Control accuracy requirement of airtight load(ing) point, and also more and more higher to the requirement of its loading velocity and followability.For airtight load(ing) points such as fuel tank, passenger cabins, original pressurising controller adopts the mode of liquid, electricity, gas phase combination to carry out servocontrol, structure is loaded down with trivial details, complicated operation, can not meet the requirement of more and more higher Loading Control precision, loading velocity and followability of model test, the loading velocity that has reduced whole test, has postponed the test period.
Summary of the invention
The object of the invention is: the invention provides a kind of simple to operate, loading accuracy is high, followability good, reliable and stable pneumatic servo pressurising controller.
Technical scheme of the present invention is: comprise controller system structure, remote control signal input, inflation loop, four parts of control circuit, control system structure comprises pneumatic pool film valve, electromagnetism angle seat switch valve, bleed pressure table, pilot pressure table, structural pressure table, retaining valve, filtering pressure reducing valve, gas tank, pressure transducer, wherein bleed pressure table is connected with gas ducting through retaining valve and gas tank, pilot pressure table after filtration reduction valve and pneumatic pool film valve is connected with gas ducting, and structural pressure table is all connected with gas ducting with pressure transducer; In addition, described pneumatic pool film valve is pneumatic proportional valve, and the aperture of valve, along with the size of remote control signal is opened in proportion, is controlled the pneumatic servo ratio pressurising of test specimen to realize.Described remote control signal input is connected test specimen is carried out to pneumatic servo pressurising control with electromagnetism angle seat switch valve with pneumatic pool film valve through control circuit.Described inflation loop, comprise long-range coordinated loading control system, pneumatic servo pressurising controller, testpieces, baroceptor, DC regulator, wherein DC regulator is connected with long-range coordinated loading control system, baroceptor is all connected with pneumatic servo pressurising controller with testpieces, and pneumatic servo pressurising controller is all connected with long-range coordinated loading control system with testpieces.Described control circuit comprises current/voltage converter, photoelectrical coupler, AI Intelligent Instrument, automatic/hand switch, field control button, emergency button, wherein current/voltage converter is connected with pneumatic pool film valve, and photoelectrical coupler is connected with electromagnetism angle seat switch; In addition, described AI Intelligent Instrument is connected with automatic/hand switch and emergency button, and under manual mode, according to given pressurising value, servo controller can complete the control of feedback measurement, comparison and PID etc. automatically; Under automatic mode, value of feedback can be measured and show to this instrument, and over set pressure load, can control the venting of pressurising controller in pressurising in limited time.
Technique effect of the present invention is:
The concrete advantage of this pneumatic servo pressurising controller is as follows:
1) control mode is advanced, control accuracy is high
This pneumatic servo pressurising controller has been simplified control mode, adopts the servo control technique of electricity, gas phase combination, has under real-time status error by feeding back and the ordering ability to the accurate Loading Control of tightness test point internal pressure automatically; In addition, this pneumatic servo pressurising controller control accuracy is high, and mean accuracy can reach 0.54%.
2) loading velocity is fast, and followability is good
Pneumatic pool film valve and angle seat switch valve respectively controlled pressure load and discharge degree, and meanwhile, pneumatic pool film valve is opened in proportion and carried out pressurising according to the size of remote control signal, has improved loading velocity and followability that airtight point fills.This pneumatic servo pressurising controller can make to reach the bid value in loading spectrum in the airtight inner load time setting, and followability is good, meets the requirement loading with other load load(ing) point coordinate synchronization.
4) safe
Adopt the safeguard protection design of emergency button and angle open in usual seat switch valve, from circuit to physical construction on multiple safeguard measure effectively, reduced empirical risk, improved security.In addition, this pneumatic servo pressurising controller is configured to intelligent regulator AI intelligent instrument, and under manual mode, according to given pressurising value, servo controller can complete the control of feedback measurement, comparison and PID etc. automatically; Under automatic mode, value of feedback can be measured and show to this instrument, and over set load, can control the venting of pressurising controller in pressurising in limited time, increased again a set of safeguard measure concerning testpieces.
Accompanying drawing explanation
Fig. 1 is that pneumatic servo pressurising controller system structure and test connect block diagram;
Fig. 2 is pneumatic servo pressurising controller control principle drawing;
Fig. 3 inflates loop control principle figure;
Fig. 4 is the control circuit figure of pneumatic servo pressurising controller.
Wherein, 1, testpieces; 2, baroceptor; 3, emergency button; 4, field control button;
5, automatic/hand switch; 6, AI intelligent instrument; 7, bleed pressure table; 8, retaining valve;
9, air-source inflow road; 10, exhaust duct; 11, remote control signal input interface;
12, gas tank; 13, control circuit; 14, angle seat switch valve; 15, pressure transducer;
16, filtering pressure reducing valve; 17, pneumatic pool film valve; 18, structural pressure table; 19, pilot pressure table;
20, current-to-voltage convertor; 21, valve current signal; 22, photoelectrical coupler; 23, driving circuit;
24, baroceptor; 25, DC regulator; 26, tele-control system;
27, pneumatic servo pressurising controller; 28, normal closing type relay; 29,24V DC voltage-stabilizing driving power;
30, emergency button.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described:
Pneumatic servo pressurising controller of the present invention is divided into controller system structural design, remote control signal input, inflation loop design and controller controling circuit and designs four major parts.
(1) controller system structural design:
As shown in Figure 1, control system structure comprises pneumatic pool film valve, electromagnetism angle seat switch valve, bleed pressure table, pilot pressure table, structural pressure table, retaining valve, filtering pressure reducing valve, gas tank, pressure transducer, wherein bleed pressure table is connected with gas ducting through retaining valve and gas tank, shows bleed pressure; Pilot pressure table after filtration reduction valve and pneumatic pool film valve is connected with gas ducting, shows gas ducting pressure; Structural pressure table is all connected with gas ducting with pressure transducer, shows test specimen inlet pressure.
Pressurising is controlled and is unloaded pressure-controlled and adopts respectively electricity, gas servocontrol executive component to realize, compatible by design specialized control circuit and long-range test Loading Control System, processing remote control system input signal, coordinates the action between them, realizes pressure servo proportional control.Meanwhile, described pneumatic pool film valve is pneumatic proportional valve, and the aperture of valve, along with the size of remote control signal is opened in proportion, is controlled the pneumatic servo ratio pressurising of test specimen to realize.Pressure load release adopts the mode of on-off switch valve to complete, and has designed two kinds of modes of Long-distance Control and field control in control operation, by switch, switches; And designed multiple protector, guarantee the safety of testpieces.
(2) remote control signal input:
As shown in Figure 2, the control signal of tele-control system output is the valve current signal of 0～± 50mA, through current/voltage converter, converts 2 road voltage signals to; Wherein: 0～50mA control signal corresponding conversion is 0～10V voltage signal, by steering diode, drive pneumatic pool film proportioning valve, the aperture of valve changes along with the variation of voltage signal, realizes pressure-loaded action; 0～-50mA corresponding conversion is 0～-10V voltage signal, by photoelectrical coupler, drives electromagnetism angle seat switch valve, realizes discharge degree action.
(3) inflation loop design:
As shown in Figure 3, inflation loop comprises long-range coordinated loading control system, pneumatic servo pressurising controller, testpieces, baroceptor, DC regulator, wherein DC regulator is connected with long-range coordinated loading control system, baroceptor is all connected with pneumatic servo pressurising controller with testpieces, and pneumatic servo pressurising controller is all connected with long-range coordinated loading control system with testpieces.Using the output signal of the baroceptor being connected with testpieces feedback signal as long-range coordinated loading control system after the demodulation of DC regulator, the command signal of exporting with long-range coordinated loading control system after A/D conversion again compares, when command signal is greater than feedback signal, the valve current signal of control system output 0～50mA, the voltage signal that converts 0～10 volt to through current/voltage converter goes to drive pneumatic pool film valve to inflate action, and the aperture of valve changes along with the variation of voltage signal; When command signal is less than feedback signal, the valve current signal of control system output 0～-50mA, converts the voltage signal of 0～-10 volt to through current/voltage converter and goes to drive the action of exitting of electromagnetism angle seat switch valve, and at this moment pneumatic pool film valve cuts out.
(4) controller circuitry design:
As shown in Figure 4, control circuit comprises current/voltage converter, photoelectrical coupler, AI Intelligent Instrument, automatic/hand switch, field control button, emergency button, wherein current/voltage converter is connected with pneumatic pool film valve through steering diode, current/voltage converter is connected with electromagnetism angle seat switch through photoelectrical coupler, when threshold voltage is 0～10V, steering diode conducting drives the work of pneumatic pool film valve, the aperture of its valve, along with the size of remote control signal is opened in proportion, is controlled the pneumatic servo ratio pressurising of test specimen to realize; When threshold voltage is 0～-10V, photoelectrical coupler adhesive drives electromagnetism angle seat switch valve to open, and realizes the venting of test specimen is controlled.In addition, described AI Intelligent Instrument is connected with baroceptor, and under manual mode, AI Intelligent Instrument can complete the control of feedback measurement, comparison and PID etc. automatically according to given pressurising value; Under automatic mode, value of feedback can be measured and show to AI Intelligent Instrument, and over set pressure load, can control the venting of pressurising controller in pressurising in limited time; Described emergency button is connected with 24V DC voltage-stabilizing driving power by normal closing type relay, and the emergency protection of realizing in process of the test is controlled.
Claims (4)
1. a pneumatic servo pressurising controller, it is characterized in that, comprise controller system structure, remote control signal input, control circuit, described control system structure comprises pneumatic pool film valve, electromagnetism angle seat switch valve, bleed pressure table, pilot pressure table, structural pressure table, retaining valve, filtering pressure reducing valve, gas tank, pressure transducer, wherein bleed pressure table is connected with gas ducting through retaining valve and gas tank, pilot pressure table after filtration reduction valve and pneumatic pool film valve is connected with gas ducting, and structural pressure table is all connected with gas ducting with pressure transducer; In addition, described pneumatic pool film valve is pneumatic proportional valve, and the aperture of valve, along with the size of remote control signal is opened in proportion, is controlled the pneumatic servo ratio pressurising of test specimen to realize.
2. pneumatic servo pressurising controller according to claim 1, is characterized in that, described remote control signal input is connected with electromagnetism angle seat switch valve with the pneumatic pool film valve of controller system structure through control circuit, and test specimen is carried out to pneumatic servo pressurising control.
3. pneumatic servo pressurising controller according to claim 1, it is characterized in that, also comprise inflation loop, wherein baroceptor is all connected with pneumatic servo pressurising controller with testpieces, and pneumatic servo pressurising controller is all connected with long-range coordinated loading control system with testpieces.
4. pneumatic servo pressurising controller according to claim 1, it is characterized in that, described control circuit comprises current/voltage converter, photoelectrical coupler, AI Intelligent Instrument, automatic/hand switch, field control button, emergency button, wherein current/voltage converter is connected with pneumatic pool film valve through automatic/hand switch, and photoelectrical coupler is connected with electromagnetism angle seat switch through normal closing type relay; In addition, described AI Intelligent Instrument is connected with automatic/hand switch and emergency button.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310652037.8A CN103631282A (en) | 2013-12-04 | 2013-12-04 | Pneumatic servo pressurization controller |
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| CN201310652037.8A CN103631282A (en) | 2013-12-04 | 2013-12-04 | Pneumatic servo pressurization controller |
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| CN103631282A true CN103631282A (en) | 2014-03-12 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104208A (en) * | 2019-05-09 | 2019-08-09 | 中国飞机强度研究所 | A kind of air inflation discharging control device |
| CN111532449A (en) * | 2020-04-30 | 2020-08-14 | 中国飞机强度研究所 | Emergency protection device and high-pressure fluid pressurization test device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3943973A (en) * | 1974-03-22 | 1976-03-16 | Tedeco Ag | Control system |
| GB2111250B (en) * | 1981-11-17 | 1986-05-29 | Bosch Gmbh Robert | Apparatus for the control of pressure medium |
| CN201916283U (en) * | 2010-12-31 | 2011-08-03 | 中国飞机强度研究所 | Pneumatic servo positive and negative pressure control device |
| CN202880905U (en) * | 2012-09-25 | 2013-04-17 | 山西同德化工股份有限公司 | Air pressure adjusting system |
| CN103104810A (en) * | 2013-01-24 | 2013-05-15 | 中国科学院自动化研究所 | Positive / negative pressure gas circuit generating device |
-
2013
- 2013-12-04 CN CN201310652037.8A patent/CN103631282A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3943973A (en) * | 1974-03-22 | 1976-03-16 | Tedeco Ag | Control system |
| GB2111250B (en) * | 1981-11-17 | 1986-05-29 | Bosch Gmbh Robert | Apparatus for the control of pressure medium |
| CN201916283U (en) * | 2010-12-31 | 2011-08-03 | 中国飞机强度研究所 | Pneumatic servo positive and negative pressure control device |
| CN202880905U (en) * | 2012-09-25 | 2013-04-17 | 山西同德化工股份有限公司 | Air pressure adjusting system |
| CN103104810A (en) * | 2013-01-24 | 2013-05-15 | 中国科学院自动化研究所 | Positive / negative pressure gas circuit generating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104208A (en) * | 2019-05-09 | 2019-08-09 | 中国飞机强度研究所 | A kind of air inflation discharging control device |
| CN111532449A (en) * | 2020-04-30 | 2020-08-14 | 中国飞机强度研究所 | Emergency protection device and high-pressure fluid pressurization test device |
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Application publication date: 20140312 |