CN202089064U - Device for performing real time control on train pipe volume air pressure - Google Patents
Device for performing real time control on train pipe volume air pressure Download PDFInfo
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- CN202089064U CN202089064U CN2011200707279U CN201120070727U CN202089064U CN 202089064 U CN202089064 U CN 202089064U CN 2011200707279 U CN2011200707279 U CN 2011200707279U CN 201120070727 U CN201120070727 U CN 201120070727U CN 202089064 U CN202089064 U CN 202089064U
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- train pipe
- pipe volume
- air pressure
- brake
- real time
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Abstract
The utility model discloses a device for performing real time control on train pipe volume air pressure, which comprises an electronic control circuit and a proportional servo valve. The proportional servo valve is connected with a train pipe volume. The electronic control circuit is connected with the proportional servo valve. Thus a closed-loop control system is formed. The control system then performs real time control on the air pressure inside the train pipe volume and the change process or the change speed thereof so as to make the air pressure changes reflected in an air-pressure-time graph completely accord with a preset curve ( or straight line). All the conditions illustrated by a vehicle braking curve map are thus easily realized. The device in the utility model can perform direct test checks on all conditions of brake valves and vehicle brakes. Specifically, the device can perform alleviation tests, brake sensitivity tests, stabilization tests and emergent brake tests, etc. on brake valves. Meanwhile, the device can make the efficiency of test checks significantly improved.
Description
Technical field
The utility model relates to a kind of performance checking experimental set-up of railway vehicle braking device, is specifically related to a kind of device of real-time control train pipe volume air pressure.
Background technology
The railway vehicle braking device is the assurance of train traffic safety, and brake is the brake equipment that produces the braking prime power and handle and control, and its core component is a brake activation valve, and what railway vehicle used at present mainly is air damper.The confidential normal operation of air brake just must be made correct response to meeting the train pipe decompression rate shown in the car brakeing curve (as shown in Figure 1); These wherein various brake activation valves at first must be to meeting all the decompression rate correct responses shown in this curve.
Based on the importance of vehicle air brake to train traffic safety, Ministry of Railways's " Vehicular brake device maintenance detailed rules and regulations " has stipulated air damper is carried out the regulation of (partition, bicycle and train) at different levels experimental check, develop thus and used all kinds of corresponding test facilitys, mainly contain brake activation valve test cell, single car testing device and the train tester of various models.
The brake activation valve test cell are in order to various brake activation valves (120 valves, 103 valves, 104 valves etc.) being carried out a class device of performance checking test, can be manually and test automatically, and brake activation valve can use after stand the test in entrucking.
Single car testing device is a kind of movably experimental set-up, be mainly used in the bicycle performance technical standard whether up to specification of check visitor, goods vehicle brake, to make newly that car and braking are supplementally taken and more than repair the vehicle of journey and the brake wreck vehicle all needs carry out the bicycle performance test through single car testing device, can use after qualified.
The train tester is to be located at ground-surface anchor fitting, is used for arrival, the visitor who starts, the specialized equipment that freight train air brake equipment state of the art is checked.They are bringing into play significant feature for the driving that ensures safety in the utilization of rolling stock.
Present each brake test equipment or method, according to Test item, the air pressure in the control train pipe volume is pressed certain speed and is descended or rise (as shown in Figure 1), the variation of the state of checkout test object simultaneously.The method that this control air pressure changes with certain speed is to fill wind or air draft realization by the aperture of controlling different apertures, its principle is the gas in fixed volume, under the effect of inside and outside differential pressure, fill wind or sew through the aperture of special pore size distribution, the rising or the decline of volume internal gas pressure generation corresponding speed, this pace of change only is decided by the aperture of aperture when pressure reduction is 2 times; Each brake test equipment is at present all adopted by the aperture that switches different apertures and is filled wind or air draft, realize the decompression or the rate of rise of different tests project, so each brake test equipment all is equipped with the maneuvering valve with a plurality of different apertures aperture.
The pressure variation accuracy that this kind method produces can be subjected to the influence of factors such as ambient pressure, ambient temperature or brake pipe actual displacement, and it is significantly uncertain that test results is existed; In addition, these are in order to fill the aperture of wind or air draft, through use after a while, its aperture can not produce the decompression or the rate of rise of regulation because a variety of causes (for example obstruction of dust, airborne greasy dirt etc.) changes, in order to ensure traffic safety, must carry out function experiment behind each brake test equipment utilization certain hour and check.
The utility model content
The utility model provides a kind of device of real-time control train pipe volume air pressure.The brake apparatus test that carries out based on the utility model, its supercharging and decompression process can be controlled fully, on air pressure-time diagram, show as any default curve (straight line), thereby be easy to realize all situations shown in the car brakeing diagram of curves, can carry out direct experimental check to all situations of brake activation valve, as brake activation valve is alleviated, sensitivity, stable, and project such as emergency braking tests, also can improve the efficient of test greatly simultaneously.
In order to achieve the above object, the utility model adopts following technical scheme:
A kind of device of real-time control train pipe volume air pressure, this device comprises servo proportion and electronic control circuit, described servo proportion connects train pipe volume, described electronic control circuit connects described servo proportion, logical overcharging of described servo proportion or air draft control train pipe volume air pressure, and detect train pipe volume air pressure in real time, described electronic control circuit provides target pressure value to servo proportion, and according to the actual pressure of the detected current train pipe volume of servo proportion, in real time the control servo proportion fills the flow size of wind or air draft, makes the pressure of train pipe volume reach target pressure value or changes continuously with given speed.
Described servo proportion is provided with a ventilation inlet, an exhaust outlet and an air outlet, and described air outlet is communicated with train pipe volume, fills wind and air draft so that the interior gas of train pipe volume is finished by servo proportion, thereby changes its internal pressure; Described ventilation inlet is communicated with total wind regime, is used for filling wind from total wind regime when needs increase train pipe volume pressure; Described exhaust outlet is used for discharging gas when needs lower train pipe volume pressure.
Described ventilation inlet and exhaust outlet are controlled to be closed condition or the controlled opening of opening caliber size; Two states are then closed and opened to described air outlet.
The process of the device control train pipe volume decompression that the utility model provides is not the aperture air draft by constant aperture, but fill the speed of air draft flow with the control decompression in adjustment in real time, thereby the function experiment of check constant aperture aperture neither be necessary, and this has improved the efficient of test greatly; The device of this employing close-loop feedback control volume internal gas pressure makes its influence that is not subjected to parameter changes such as volume, ambient temperature and operating air pressure from principle, thereby its conclusion (of pressure testing) reliability height.
The utility model adopts the device of close-loop feedback control, no matter be that control train pipe volume internal gas pressure rises or descends, its process can be controlled to be any default curve (straight line) on air pressure-time diagram, can realize all situations of car brakeing diagram of curves, as shown in Figure 1, thus can be used as to the braking characteristics of brake activation valve and car brakeing machine do directly, the ideal tools of complete analysis.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is air brake valve braking curve figure.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is a control assembly block diagram of the present utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The utility model is according to the brake activation valve of the braking curve figure (as Fig. 1) of brake activation valve regulation and the car brakeing machine response characteristic to train pipe decompression rate, a kind of device of controlling train pipe volume pressure variation is provided, this device only is equipped with one and fills wind hole and a vent, by controlling the instant flow in two holes, final decision train pipe fill wind air draft action and speed; The control process of train pipe volume air pressure is a principle of utilizing closed loop control, read and control the atmospheric pressure value in the train pipe volume in real time, difference according to itself and preset air pressure value, the flow size that wind and air draft two holes are filled in control in real time dynamically remains on the setting pressure value train pipe volume internal gas pressure.When the setting pressure value rose or descend, as shown in Figure 1, the volume internal pressure changed thereupon, and the atmospheric pressure value of realizing train pipe volume thus in the intended manner or velocity variations.
Based on above-mentioned principle, the device of the real-time control train pipe volume air pressure that the utility model provides is mainly formed a closed loop control system (as shown in Figure 2) by electronic control circuit 100 and servo proportion 200 etc.
Servo proportion 200 logical overchargings or air draft control train pipe volume air pressure, and detect train pipe volume air pressure in real time.
A ventilation inlet 201, an exhaust outlet 202 and an air outlet 203 are arranged on the servo proportion 200.
100 pairs of servo proportions 200 of electronic control circuit provide target pressure value, and according to the actual pressure of servo proportion 200 detected current train pipe volumes, control ventilation inlet 201, exhaust outlet 202 and air outlet 203 on the servo proportion 200 in real time, fill the flow size of wind or air draft with control, make the pressure of train pipe volume reach target pressure value or change continuously with given speed.
Because such scheme as can be known, the utility model can be in the process that the increase and decrease of control train pipe volume is pressed, change its given value continuously with certain speed, and by reading the pressure feedback value of train pipe volume, adjustment is in real time filled, the air draft flow, thereby the pressure of control train pipe volume changes continuously with given speed.
Based on the device that such scheme forms, its concrete operational process as shown in Figure 3:
The controlled target of system is the air pressure (i.e. load among the figure) of train pipe volume, part among the figure in the frame of broken lines represents to carry out the servo proportion that fills wind or air draft action, the target air pressure value is given by electronic control circuit, by feedback F1 (S), servo proportion real-time regulated load atmospheric pressure value (by source of the gas tonifying Qi or air draft) is to given value; If the given target air pressure value of electronic control circuit rises in time or descends, then the air pressure of load volume also shows as same variation; Take this device, the air pressure decreasing pressure curve on the car brakeing diagram of curves is easy to realize in train pipe volume, trickle charge wind and fill the wind process soon and also be easy to realize.
As from the foregoing, no matter the utility model is that control train pipe volume internal gas pressure rises or descends, and the control of its process can be implemented in any default curve (straight line) that draws on air pressure-time diagram, can realize all situations of car brakeing diagram of curves.
More than show and described groundwork of the present utility model, principal character and advantage of the present utility model.The technical personnel of the industry should be understood; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a device of controlling train pipe volume air pressure in real time is characterized in that described device comprises servo proportion and electronic control circuit, and described servo proportion connects train pipe volume, and described electronic control circuit connects described servo proportion.
2. the device of a kind of real-time control train pipe volume air pressure according to claim 1, it is characterized in that, described servo proportion is provided with a ventilation inlet, an exhaust outlet and an air outlet, and described air outlet is communicated with train pipe volume, and described ventilation inlet is communicated with total wind regime.
3. the device of a kind of real-time control train pipe volume air pressure of stating according to claim 2 is characterized in that described ventilation inlet and exhaust outlet are provided with the opening of closed condition or opening caliber size continuous controllable; Two states are then closed and opened to described air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200707279U CN202089064U (en) | 2011-03-17 | 2011-03-17 | Device for performing real time control on train pipe volume air pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200707279U CN202089064U (en) | 2011-03-17 | 2011-03-17 | Device for performing real time control on train pipe volume air pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202089064U true CN202089064U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200707279U Expired - Fee Related CN202089064U (en) | 2011-03-17 | 2011-03-17 | Device for performing real time control on train pipe volume air pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202089064U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925084A (en) * | 2015-07-22 | 2015-09-23 | 南车株洲电力机车有限公司 | Air brake and elimination method for balancing air cylinder temperature effect |
| CN107082065A (en) * | 2017-06-12 | 2017-08-22 | 石家庄铁道大学 | A kind of railway vehicle braking overall system performance universal test bench and its experimental control method |
-
2011
- 2011-03-17 CN CN2011200707279U patent/CN202089064U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925084A (en) * | 2015-07-22 | 2015-09-23 | 南车株洲电力机车有限公司 | Air brake and elimination method for balancing air cylinder temperature effect |
| CN107082065A (en) * | 2017-06-12 | 2017-08-22 | 石家庄铁道大学 | A kind of railway vehicle braking overall system performance universal test bench and its experimental control method |
| CN107082065B (en) * | 2017-06-12 | 2023-09-08 | 石家庄铁道大学 | General test bed for comprehensive performance of railway vehicle braking system and test control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20150317 |
|
| EXPY | Termination of patent right or utility model |