CN104057976A - Pressure control flow amplification valve - Google Patents
Pressure control flow amplification valve Download PDFInfo
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- CN104057976A CN104057976A CN201410329868.6A CN201410329868A CN104057976A CN 104057976 A CN104057976 A CN 104057976A CN 201410329868 A CN201410329868 A CN 201410329868A CN 104057976 A CN104057976 A CN 104057976A
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- brake
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Abstract
The invention discloses a pressure control flow amplification valve arranged in an air brake system. Output pressure is adjusted according to changes of control pressure. The pressure control flow amplification valve comprises a valve body with a plurality of air path channels, a valve rod capable of vertically moving, a piston component, a throttling valve capable of adjusting flow, an air filter device, a valve seat, an elastic element, a necessary sealing formwork and a spring, wherein the air filter device and the valve seat are arranged in the valve body. The valve rod, the piston component and the elastic element divide a movable cavity in the valve body into a plurality of independent changeable volume spaces. A brake pressure cavity is connected with a feedback pressure cavity through the throttling valve. Different large-flow pressures can be output by the flow amplification valve by adjusting pilot pressure of pre-control cavities. Under different feedback cavity pressure volumes and different using pressure conditions, the stable output performance can be obtained by adjusting the flow of the throttling valve connected between the brake pressure cavity and the feedback pressure cavity.
Description
Technical field
The present invention relates to field of track traffic, particularly a kind of pressure is controlled flux amplification valve.
Background technology
Traditional track traffic relies on and self carries out pressure adjusting with mechanical type pressing force control valve, controls inflation and the exhaust of train pipe by the variation of load air pressure, is train pipe decompression braking.
Current rail transit car braking system generally adopts microcomputer electro pneumatic braking system, and requirement can realize brake-cylinder pressure is controlled fast, accurately, and realizes the pressure air output of large flow.The critical component applying as braking pressure control, this type of mechanical valve also needs to control function and possesses high reliability.Traditional decompression brake mode can be carried out the output of large flow with pressure-modulation valve, but cannot accurately control the output of brake-pressure, is difficult to meet the requirement that microcomputer is controlled brake system.And airborne large granular impurity can enter in valve, affect the reliability of valve.
For microcomputer, control brake system, need aly can to adopt automatically controlled mode to control, meet fast simultaneously, accurately response requires, possesses large flow output, failure-free mechanical valve more.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of can output and substantially equate with automatically controlled input pressure size according to automatically controlled input pressure size, and the large flux amplification valve of flow.This flux amplification valve can be according to different cavity volumes, different flow, the pore size of adjusting flow regulating valve is realized the stability output accurately and fast of flux amplification valve, the chamber of pressure input simultaneously arranges filtering installation, improves the reliability and stability of flux amplification valve.
In order to achieve the above object, the present invention by the following technical solutions: a kind of pressure is controlled flux amplification valve, comprises valve body, valve rod, piston component, sealing lamina membranacea and elastic element, described valve body is by upper valve body, intermediate assembly and bottom assembly are bolted connection and form, in described valve body, be provided with passage and the movable chamber of gas communication, the passage of described gas communication comprises free air diffuser and exhaust passage, described movable chamber is connected with exhaust passage with free air diffuser, and described movable chamber comprises total wind pressure chamber, brake-pressure chamber, feedback pressure chamber, the first pre-control pressure chamber, the second pre-control pressure chamber, described total wind pressure chamber, brake-pressure chamber, the first pre-control pressure chamber, the second pre-control pressure chamber is at least connected with a free air diffuser respectively, and described brake-pressure chamber and total wind pressure chamber are controlled connection, the first described pre-control pressure chamber, the second pre-control pressure chamber, separate between feedback pressure chamber, described brake-pressure chamber is connected by flow regulating valve with feedback pressure chamber.
Described valve inner is provided with valve rod, piston component, spool, described valve rod, piston component, spool move in the movable chamber of valve body, described valve rod inside is provided with the passage communicating with atmosphere, and the described passage communicating with atmosphere is used for the pressure air of discharge-service valve rear end.
Described valve rod and piston component respectively with the nested connection in one end of circular rubber diaphragm, the other end of described rubber diaphragm is embedded in valve inner and fixes, and makes seal isolation between the first pre-control pressure chamber and the second pre-control pressure chamber, feedback pressure chamber and the first pre-control pressure chamber.
Described upper valve body inside is embedded with valve seat, described spool is pressed on valve seat by seating spring, by total wind pressure chamber and brake-pressure chamber seal isolation, described seating spring one end is fixed on upper valve body upper end, and the other end of described seating spring is pressed on spool.
Described valve rod and the state of kinematic motion of spool are consistent.
Described valve rod top is pressed with pull back spring, and described pull back spring is for regulating valve stem initial position.
The air intake vent place in described total wind pressure chamber is mounted with filtering installation, and described filtering installation is cylindrical filter.
Adopt after technique scheme, the present invention has following beneficial effect: the flux amplification valve that a kind of applicable microcomputer electro pneumatic braking system is provided, and adopt the flow regulating valve of adjustable aperture to connect between this valve brake-pressure chamber and feedback pressure chamber, can realize the more stable action of flux amplification valve and output according to the aperture of the size adjustment flow regulating valve of chamber, control more accurately fast.Pressure breathing mouth is provided with filtering installation, and the large granular impurity in can filtered air, plays better protective effect to flux amplification valve, improves the reliability of flux amplification valve.
Accompanying drawing explanation
Fig. 1 is the structural representation that a kind of pressure of the present invention is controlled flux amplification valve.
In figure: 1, seating spring 2, spool 3, filtering installation 4, upper valve body 5, pull back spring 6, intermediate assembly 7, piston component 8, bottom assembly 9, valve rod 10, flow regulating valve 11, valve seat 12, total wind pressure chamber 13, brake-pressure chamber 14, feedback pressure chamber 15, the first pre-control pressure chamber 16, the second pre-control pressure chamber.
The specific embodiment
According to Figure of description and specific embodiment, the present invention is further explained below.
As shown in Figure 1, a kind of pressure is controlled flux amplification valve, comprise valve body, valve rod 9, piston component 7, sealing lamina membranacea and elastic element, described valve body is by upper valve body 4, intermediate assembly 6 and bottom assembly 8 are bolted connection and form, in described valve body, be provided with passage and the movable chamber of gas communication, the passage of described gas communication comprises free air diffuser and exhaust passage, described movable chamber is connected with exhaust passage with free air diffuser, described movable chamber comprises total wind pressure chamber 12, brake-pressure chamber 13, feedback pressure chamber 14, the first pre-control pressure chamber 15, the second pre-control pressure chamber 16, shown elastic element has certain amount of compression by fastening power after installation, compression seal template realizes the sealing effectiveness between different chamber.Described total wind pressure chamber 12, brake-pressure chamber 13, the first pre-control pressure chamber 15, the second pre-control pressure chamber 16 are at least connected with a free air diffuser respectively, described brake-pressure chamber 13 and total wind pressure chamber 12 are controlled connection, separate between the first described pre-control pressure chamber 15, the second pre-control pressure chamber 16, feedback pressure chamber 14, described brake-pressure chamber 13 is connected by flow regulating valve 10 with feedback pressure chamber 14.
Described valve inner is provided with valve rod 9, piston component 7, spool 2, described valve rod 9, piston component 7, spool 2 move in the movable chamber of valve body, described valve rod 9 inside are provided with the passage communicating with atmosphere, and the described passage communicating with atmosphere is used for the pressure air of discharge-service valve rear end.
Described valve rod 9 and piston component 7 respectively with the nested connection in one end of circular rubber diaphragm, the other end of described rubber diaphragm is embedded in valve inner and fixes, and makes seal isolation between the first pre-control pressure chamber 15 and the second pre-control pressure chamber 16, feedback pressure chamber 14 and the first pre-control pressure chamber 15.
Described upper valve body 4 inside are embedded with valve seat 11, described spool 2 is pressed on valve seat 11 by seating spring 1, by total wind pressure chamber 12 and brake-pressure chamber 13 seal isolation, described seating spring 1 one end is fixed on upper valve body 4 upper ends, the other end of described seating spring 1 is pressed on spool 2, and initial sealing power is provided.
Described valve rod 9 and the state of kinematic motion of spool 2 are consistent.
Described valve rod 9 tops are pressed with pull back spring 5, and described pull back spring 5 is for regulating valve stem 9 initial positions.
The air intake vent place in described total wind pressure chamber 12 is mounted with filtering installation 3, and described filtering installation 3 is cylindrical filter.
This flux amplification valve has that braking force applies, braking force keeps, braking force is alleviated three kinds of mode of operations.
Braking applies: pilot control pressure enters the first pre-control pressure chamber 15 and the second pre-control pressure chamber 16, promote valve rod 9 or piston component 7 together with valve rod 9, upward movement, the valve port position of valve rod 9 acts on spool 2, open spool 2, pressure in total wind pressure chamber 12 enters brake-pressure chamber 13, realizes braking and applies.
Braking hold mode: the pressure in brake-pressure chamber 13 enters into feedback pressure chamber 14 by flow regulating valve 10, when the gas in feedback pressure chamber 14 acts on effect that the downward application force of the downward power of valve rod 9, seating spring 1 downward application force, returning spring and the first pre-control pressure chamber 15 or the second pre-control pressure chamber 16 make progress and reaches balance, valve seat 11 is got back to initial position, now in braking hold mode.From braking, apply state to braking the process that hold mode is stable, the uninterrupted of flow regulating valve 10 directly affects the time length of stabilization process and the size of delivery rate.The action range that the excessive spool 2 of flow makes progress diminishes, and the time of spool 2 in maximum travel position shortens, and flow diminishes, and the time that is full of brake cylinder can be elongated; Flow is too small easily be there is gas overcharging or crosses exhaust, and delivery pressure is elongated stabilization time.In this example, the desired flow of flow regulating valve 10 is that aperture is between 1.5mm to 2mm.Certainly in the situation for different feedback cavity volumes, different working pressure sizes, this pore size can be distinguished to some extent.
Release of brake state: valve seat 11 is got back to initial position under the effect of seating spring 1, by total wind pressure chamber 12 and 13 isolation of brake-pressure chamber, valve rod 9 disengages with valve seat 11 under the effect of returning spring, the pressure in brake-pressure chamber 13 communicates with atmosphere by the exhausr port in valve rod 9, realizes and alleviating.
Claims (7)
1. a pressure is controlled flux amplification valve, comprise valve body, valve rod, piston component, sealing lamina membranacea and elastic element, it is characterized in that described valve body is by upper valve body, intermediate assembly and bottom assembly are bolted connection and form, in described valve body, be provided with passage and the movable chamber of gas communication, the passage of described gas communication comprises free air diffuser and exhaust passage, described movable chamber is connected with exhaust passage with free air diffuser, described movable chamber comprises total wind pressure chamber, brake-pressure chamber, feedback pressure chamber, the first pre-control pressure chamber, the second pre-control pressure chamber, described total wind pressure chamber, brake-pressure chamber, the first pre-control pressure chamber, the second pre-control pressure chamber is at least connected with a free air diffuser respectively, described brake-pressure chamber and total wind pressure chamber are controlled connection, the first described pre-control pressure chamber, the second pre-control pressure chamber, separate between feedback pressure chamber, described brake-pressure chamber is connected by flow regulating valve with feedback pressure chamber.
2. a kind of pressure according to claim 1 is controlled flux amplification valve, it is characterized in that described valve inner is provided with valve rod, piston component, spool, described valve rod, piston component, spool move in the movable chamber of valve body, described valve rod inside is provided with the passage communicating with atmosphere, and the described passage communicating with atmosphere is used for the pressure air of discharge-service valve rear end.
3. a kind of pressure according to claim 1 is controlled flux amplification valve, it is characterized in that described valve rod and piston component respectively with the nested connection in one end of circular rubber diaphragm, the other end of described rubber diaphragm is embedded in valve inner and fixes, and makes seal isolation between the first pre-control pressure chamber and the second pre-control pressure chamber, feedback pressure chamber and the first pre-control pressure chamber.
4. a kind of pressure according to claim 2 is controlled flux amplification valve, it is characterized in that described upper valve body inside is embedded with valve seat, described spool is pressed on valve seat by seating spring, by total wind pressure chamber and brake-pressure chamber seal isolation, described seating spring one end is fixed on upper valve body upper end, and the other end of described seating spring is pressed on spool.
5. a kind of pressure according to claim 1 is controlled flux amplification valve, it is characterized in that described valve rod and the state of kinematic motion of spool are consistent.
6. a kind of pressure according to claim 1 is controlled flux amplification valve, it is characterized in that described valve rod top is pressed with pull back spring, and described pull back spring is for regulating valve stem initial position.
7. a kind of pressure according to claim 1 is controlled flux amplification valve, it is characterized in that the air intake vent place in described total wind pressure chamber is mounted with filtering installation, and described filtering installation is cylindrical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329868.6A CN104057976A (en) | 2014-07-11 | 2014-07-11 | Pressure control flow amplification valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410329868.6A CN104057976A (en) | 2014-07-11 | 2014-07-11 | Pressure control flow amplification valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104057976A true CN104057976A (en) | 2014-09-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410329868.6A Pending CN104057976A (en) | 2014-07-11 | 2014-07-11 | Pressure control flow amplification valve |
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| CN (1) | CN104057976A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106882175A (en) * | 2017-04-01 | 2017-06-23 | 眉山中车制动科技股份有限公司 | Application valve and rail vehicle braking system |
| CN114771596A (en) * | 2022-04-22 | 2022-07-22 | 中国国家铁路集团有限公司 | Relay valve capable of outputting multistage pressure and railway vehicle braking system |
| CN114872751A (en) * | 2022-03-24 | 2022-08-09 | 南京中车浦镇海泰制动设备有限公司 | Electric air relay valve with multi-stage output function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2261095A2 (en) * | 2009-06-11 | 2010-12-15 | Dako-CZ, a.s. | Braking device for multiple wagon vehicles, such as railway trains, kinked characteristic valve and method |
| CN102167026A (en) * | 2011-04-07 | 2011-08-31 | 北京南车时代机车车辆机械有限公司 | Electric control dual-chamber relay valve |
| CN202243532U (en) * | 2011-07-20 | 2012-05-30 | 北京南车时代机车车辆机械有限公司 | Balancing valve |
| CN202345661U (en) * | 2011-09-06 | 2012-07-25 | 浙江中盾机械有限公司 | Relay valve air inlet filter screen |
| CN203958178U (en) * | 2014-07-11 | 2014-11-26 | 南京浦镇海泰制动设备有限公司 | A kind of pressure control flux amplification valve |
-
2014
- 2014-07-11 CN CN201410329868.6A patent/CN104057976A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2261095A2 (en) * | 2009-06-11 | 2010-12-15 | Dako-CZ, a.s. | Braking device for multiple wagon vehicles, such as railway trains, kinked characteristic valve and method |
| CN102167026A (en) * | 2011-04-07 | 2011-08-31 | 北京南车时代机车车辆机械有限公司 | Electric control dual-chamber relay valve |
| CN202243532U (en) * | 2011-07-20 | 2012-05-30 | 北京南车时代机车车辆机械有限公司 | Balancing valve |
| CN202345661U (en) * | 2011-09-06 | 2012-07-25 | 浙江中盾机械有限公司 | Relay valve air inlet filter screen |
| CN203958178U (en) * | 2014-07-11 | 2014-11-26 | 南京浦镇海泰制动设备有限公司 | A kind of pressure control flux amplification valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106882175A (en) * | 2017-04-01 | 2017-06-23 | 眉山中车制动科技股份有限公司 | Application valve and rail vehicle braking system |
| CN114872751A (en) * | 2022-03-24 | 2022-08-09 | 南京中车浦镇海泰制动设备有限公司 | Electric air relay valve with multi-stage output function |
| CN114771596A (en) * | 2022-04-22 | 2022-07-22 | 中国国家铁路集团有限公司 | Relay valve capable of outputting multistage pressure and railway vehicle braking system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 211800 Nanjing City, Pukou Province Economic Development Zone, Jiangsu Road, No. 10 Applicant after: Nanjing Zhongche town Haitai Brake Equipment Co Ltd Address before: 211800 Nanjing City, Pukou Province Economic Development Zone, Jiangsu Road, No. 10 Applicant before: Nanjing Puzhen Haitai Brake Equipment Co., Ltd. |
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| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140924 |