CN203020302U - Relay valve for railway vehicle braking system - Google Patents
Relay valve for railway vehicle braking system Download PDFInfo
- Publication number
- CN203020302U CN203020302U CN 201220718906 CN201220718906U CN203020302U CN 203020302 U CN203020302 U CN 203020302U CN 201220718906 CN201220718906 CN 201220718906 CN 201220718906 U CN201220718906 U CN 201220718906U CN 203020302 U CN203020302 U CN 203020302U
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- Prior art keywords
- valve
- air
- valve body
- braking system
- pressure
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- 230000001276 controlling effect Effects 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 230000003137 locomotive Effects 0.000 description 2
- 241000271571 Dromaius novaehollandiae Species 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001737 promoting Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to a relay valve for a railway vehicle braking system, which comprises a valve body and a valve stem, wherein the valve stem is arranged in the cavity of the valve body, the valve body is provided with three air channel interfaces communicated with the internal cavity of the valve body, the two air channel interfaces are air inlet interfaces and respectively connected with a braking air storage cylinder and a pre-controlled pressure, and the other air channel interface is an air outlet interface and connected with a braking cylinder or a train pipe; the upper part of the valve stem is sleeved with an elastic return assembly, the lower end of the valve stem is contacted and connected with a valve port, and a central through hole communicated with the outside atmosphere is arranged in the valve stem; and a pressure adjusting assembly placed below the valve stem is also arranged in the valve body, and used for controlling the connection and disconnection between the braking cylinder or the train pipe and the atmosphere or the braking air storage cylinder. The relay valve disclosed by the utility model is simple in structure and low in cost, and has a quick air flushing and discharge performance, the response time is short, the output pressure shows a stable linear change with the change of the pre-controlled pressure, the pressure control is stable, and the flow rate of compressed air can be enlarged according to the change of the pre-controlled pressure so as to achieve the air inflation, air discharge or pressure maintaining function, thereby controlling the braking force of vehicles or trains.
Description
Technical field
The utility model relates to a kind of relay valve that works by gas pressure change in pilot piping in Pneumatic brake systems inside that is arranged on, and specifically, relates to a kind of rail vehicle braking control system relay valve.
Background technology
Rail vehicle braking system is in order accurately to control compressed air pressure, to improve and fill deflation rate, generally adopts relay valve to carry out charge air and amplifies and control compressed-air actuated force value.Relay valve in the traditional railway locomotive braking system is accepted the manipulation of automatic brake valve, changes according to the pressure of equalizing reservoir and moves, and that directly controls train pipe fills wind or air draft, and the brake system of using this relay valve is traditional train pipe decompression brake mode.Relay valve is comprised of two port type relay valves, total wind intercepter valve (IV) and base three parts.Two port type relay valves are the monofilm plate structure, and its effect is the pressure according to equalizing reservoir, and that controls total wind direction train pipe fills wind or air draft; The air feed of the two port type relay valves of total wind direction opened or cuts off by total wind intercepter valve (IV) according to the handle position of automatic brake valve; Base be used for to be linked up relay valve and outside total wind, train pipe and is overcharged pipe and equal pipes etc., and relay valve is installed on car body.
In EMU, city rail vehicle and locomotive braking system, usually produce a pilot control pressure by electromagnetic valve or corresponding mechanical mechanism, control relay valve and carry out the charge air amplification, form fast needed control brake-pressure, and then the generation braking force, and traditional relay valve can't satisfy rail vehicle braking system.Publication number is CN101992764A, the Chinese utility model patent that name is called " relay valve that is used for high-speed train braking system " discloses a kind of in order to adapt to the relay valve of high-speed train braking system control policy, this relay valve adopts the pre-governor pressure that is easy to control accurately and fast to be input in relay valve, make relay valve think the brake-pressure of flow greatly that brake cylinder output changes with pre-governor pressure, thereby complete the effects such as braking, pressurize and alleviation of high speed train.
Similarly, the utility model also is based on the shortcoming of prior art, a kind of rail vehicle braking system relay valve that can satisfy the rail vehicle braking system requirement has been proposed, the pre-governor pressure that employing is easy to control is accurately and fast controlled brake-pressure, it is the variation of pre-governor pressure according to pilot control pressure, amplify compressed air require, realize inflation, exhaust or pressure holding function, thereby control vehicle or braking force of train.
The utility model content
The utility model can't satisfy the above-mentioned deficiencies such as rail vehicle braking system requirement, poor stability for existing relay valve, provide a kind of simple in structure, cost is low, can satisfy the rail vehicle braking system relay valve of rail vehicle braking system requirement, this relay valve can be the variation of pre-governor pressure according to pilot control pressure, amplify compressed air require, realize inflation, exhaust or pressure holding function, thereby control vehicle or braking force of train.
The technical solution of the utility model is: a kind of rail vehicle braking system relay valve, comprise valve body and be arranged on the interior valve rod of valve body cavity, be provided with three air-path interfaces that are communicated with the valve body internal cavity on valve body, wherein, two air-path interfaces are intake interface, connect respectively braking storage reservoir, pre-governor pressure, an air-path interface is the interface of giving vent to anger, and connects brake cylinder or train pipe; The top of valve rod is set with the elastic recovery assembly, and the lower end is connected with the valve port contact, is provided with the central through hole that is communicated with ambient atmosphere in valve rod; Also be provided with the pressure adjusting part that is placed on the valve rod below in valve body, be used for controlling the break-make of brake cylinder or train pipe and atmosphere or braking storage reservoir.
Preferably, the pressure adjusting part comprises lamina membranacea and is arranged on the piston of lamina membranacea top, and the cavity of lamina membranacea bottom is communicated with pre-control pressure breathing interface, and the upper end of piston is passed through the piston seat of honour and is connected with valve interior wall.
Preferably, the upper end of piston is inlaid with the elastic seal assembly.
Preferably, the elastic recovery assembly is connected with Wind discharging hat on being arranged on valve body, and the central through hole of valve rod is communicated with ambient atmosphere by the cavity of Wind discharging hat inside.
Preferably, the elastic recovery assembly comprises spring and spring mounting seat, and an end of spring is connected with spring mounting seat, and the other end is connected with the bottom of valve rod.
Preferably, the valve rod lower end contacts the junction and is inlaid with the elastic seal assembly with valve port.
Preferably, the elastic seal assembly is rubber seal.
The beneficial effects of the utility model are: the utility model is simple in structure, cost is low, have and rush fast exhaust performance, response time is fast, delivery pressure can change the linear change that is stability with pre-governor pressure, pressure is controlled stable, can change according to pre-governor pressure, amplifies compressed air require, realize inflation, exhaust or pressure holding function, thereby control vehicle or braking force of train.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model specific embodiment.
Accompanying drawing 2 is the action principle figure of the utility model specific embodiment.
The specific embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of rail vehicle braking system relay valve, comprise valve body 1 and be arranged on the interior valve rod 2 of valve body 1 cavity, be provided with three air-path interfaces that are communicated with valve body 1 internal cavity on valve body 1, wherein, two air-path interfaces are intake interface, connect respectively braking storage reservoir, pre-governor pressure, an air-path interface is the interface of giving vent to anger, and connects brake cylinder or train pipe; The top of valve rod 2 is set with the elastic recovery assembly, and the lower end is connected with valve port 3 contacts, is provided with the central through hole that is communicated with ambient atmosphere in valve rod 2; Also be provided with the pressure adjusting part that is placed on valve rod 2 belows in valve body 1, be used for controlling the break-make of brake cylinder or train pipe and atmosphere or braking storage reservoir.
In order to control the break-make of brake cylinder or train pipe and atmosphere or braking storage reservoir, above-mentioned pressure adjusting part comprises lamina membranacea 4 and is arranged on the piston 5 of lamina membranacea 4 tops, the cavity of lamina membranacea 4 bottoms is communicated with pre-control pressure breathing interface, and the upper end of piston 5 is connected with valve body 1 inwall by the piston seat of honour 6.
In order better to cut off the path of brake cylinder or train pipe and atmosphere, the upper end of above-mentioned piston 5 is inlaid with elastic seal assembly 7, and when piston contacted with valve rod, elastic seal assembly 7 worked, and cut off the path of brake cylinder or train pipe and atmosphere.
When brake cylinder or train tube pressure when too high, for adjustable brake cylinder or train tube pressure, realize the path of brake cylinder or train pipe and atmosphere, for reducing brake cylinder or train tube pressure, above-mentioned elastic recovery assembly is connected with Wind discharging hat 8 on being arranged on valve body 1, and the central through hole of valve rod 2 is communicated with ambient atmosphere by the cavity of Wind discharging hat 8 inside.
For the ease of determining the initial position of valve rod, above-mentioned elastic recovery assembly comprises spring 9 and spring mounting seat 10, and an end of spring 9 is connected with spring mounting seat 10, and the other end is connected with the bottom of valve rod 2.
Valve rod 2 lower ends contact the junction with valve port 3 and are inlaid with elastic seal assembly 11, and when brake cylinder or train tube pressure rose to certain value, elastic seal assembly 11 worked, and cut off the path of braking storage reservoir and brake cylinder or train pipe.
Cut off effect in order to ensure sealing, the elastic seal assembly is for adopting enough good rubber seals of elasticity.
Principle of work: the cavity that enters lamina membranacea 4 bottoms when pre-governor pressure, promoting lamina membranacea 4 moves up, lamina membranacea 4 upwards promotes valve rod 2 by piston 5, cut off the path of brake cylinder or train pipe and atmosphere, elastic seal assembly 11 leaves valve port 3 with valve rod 2, open the path of braking storage reservoir and brake cylinder or train pipe, braking storage reservoir is to brake cylinder or Train line charging.When brake cylinder or train tube pressure rise to certain value, valve rod 2 promotes lamina membranaceas 4 and moves down, and elastic seal assembly 11 leans against on valve port 3, cuts off the path between braking storage reservoir and brake cylinder or train pipe; If pre-governor pressure raises again, lamina membranacea 4 upwards promotes valve rod 2 by piston 5 again, again opens the path of braking storage reservoir and brake cylinder or train pipe, and braking storage reservoir is again to brake cylinder or Train line charging, until elastic seal assembly 11 leans against on valve port 3.If pre-control pressure drop, lamina membranacea 4 moves down, elastic seal assembly 7 breaks away from valve rod 2, open the path of brake cylinder or train pipe and atmosphere, brake cylinder or train pipe discharge section pressurized air, pressure drop are to certain value, and lamina membranacea 4 moves up under the effect of pre-governor pressure, elastic seal assembly 7 leans against valve rod 2, cuts off the path of brake cylinder or train pipe and atmosphere.Pre-control pressure reduces at 0 o'clock, and lamina membranacea 4 moves on to the bottom, and the path of brake cylinder or train pipe and atmosphere is opened all the time, and the pressurized air in brake cylinder or train pipe is discharged in atmosphere rapidly.
Claims (7)
1. rail vehicle braking system relay valve, comprise valve body and be arranged on the interior valve rod of valve body cavity, it is characterized in that: be provided with three air-path interfaces that are communicated with the valve body internal cavity on valve body, wherein, two air-path interfaces are intake interface, connect respectively braking storage reservoir, pre-governor pressure, an air-path interface is the interface of giving vent to anger, and connects brake cylinder or train pipe; The top of valve rod is set with the elastic recovery assembly, and the lower end is connected with the valve port contact, is provided with the central through hole that is communicated with ambient atmosphere in valve rod; Also be provided with the pressure adjusting part that is placed on the valve rod below in valve body, be used for controlling the break-make of brake cylinder or train pipe and atmosphere or braking storage reservoir.
2. rail vehicle braking system relay valve according to claim 1, it is characterized in that: the pressure adjusting part comprises lamina membranacea and is arranged on the piston of lamina membranacea top, the cavity of lamina membranacea bottom is communicated with pre-control pressure breathing interface, and the upper end of piston is connected with valve interior wall by the piston seat of honour.
3. rail vehicle braking system relay valve according to claim 2, it is characterized in that: the upper end of piston is inlaid with the elastic seal assembly.
4. rail vehicle braking system relay valve according to claim 1 is characterized in that: the elastic recovery assembly is connected with Wind discharging hat on being arranged on valve body, and the central through hole of valve rod is communicated with ambient atmosphere by the cavity of Wind discharging hat inside.
5. according to claim 1 or 4 described rail vehicle braking system relay valves of described any one, it is characterized in that: the elastic recovery assembly comprises spring and spring mounting seat, one end of spring is connected with spring mounting seat, and the other end is connected with the bottom of valve rod.
6. rail vehicle braking system relay valve according to claim 1 is characterized in that: the valve rod lower end contacts the junction and is inlaid with the elastic seal assembly with valve port.
7. according to claim 3 or 6 described rail vehicle braking system relay valves of any one, it is characterized in that: the elastic seal assembly is rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718906 CN203020302U (en) | 2012-12-24 | 2012-12-24 | Relay valve for railway vehicle braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718906 CN203020302U (en) | 2012-12-24 | 2012-12-24 | Relay valve for railway vehicle braking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203020302U true CN203020302U (en) | 2013-06-26 |
Family
ID=48644305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220718906 Expired - Lifetime CN203020302U (en) | 2012-12-24 | 2012-12-24 | Relay valve for railway vehicle braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203020302U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043076A (en) * | 2012-12-24 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Relay valve for brake system of railway vehicle |
| CN106627542A (en) * | 2016-11-16 | 2017-05-10 | 眉山中车制动科技股份有限公司 | Multi-way rubber column sealed distribution valve |
| 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 |
| CN112590747A (en) * | 2020-12-23 | 2021-04-02 | 神华铁路装备有限责任公司 | Relay valve structure for electro-pneumatic braking and electro-pneumatic braking control system |
-
2012
- 2012-12-24 CN CN 201220718906 patent/CN203020302U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103043076A (en) * | 2012-12-24 | 2013-04-17 | 青岛四方车辆研究所有限公司 | Relay valve for brake system of railway vehicle |
| CN106627542A (en) * | 2016-11-16 | 2017-05-10 | 眉山中车制动科技股份有限公司 | Multi-way rubber column sealed distribution valve |
| CN106627542B (en) * | 2016-11-16 | 2023-05-02 | 眉山中车制动科技股份有限公司 | Multi-channel rubber cylinder sealing distribution valve |
| 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 |
| CN112590747A (en) * | 2020-12-23 | 2021-04-02 | 神华铁路装备有限责任公司 | Relay valve structure for electro-pneumatic braking and electro-pneumatic braking control system |
| CN112590747B (en) * | 2020-12-23 | 2022-03-25 | 神华铁路装备有限责任公司 | Relay valve structure for electro-pneumatic braking and electro-pneumatic braking control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 266031 Shandong province Qingdao City, Ruichang Road No. 231 Patentee after: QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Address before: 266000 Ruichang Road, Shandong, China, No. 231, No. Patentee before: QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 266031 Shandong province Qingdao City, Ruichang Road No. 231 Patentee after: CRRC QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. Address before: 266031 Shandong province Qingdao City, Ruichang Road No. 231 Patentee before: QINGDAO SIFANG ROLLING STOCK RESEARCH INSTITUTE Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |
|
| CX01 | Expiry of patent term |