CN106065972B - The chain safety valve of locomotive air braking system - Google Patents
The chain safety valve of locomotive air braking system Download PDFInfo
- Publication number
- CN106065972B CN106065972B CN201610715200.4A CN201610715200A CN106065972B CN 106065972 B CN106065972 B CN 106065972B CN 201610715200 A CN201610715200 A CN 201610715200A CN 106065972 B CN106065972 B CN 106065972B
- Authority
- CN
- China
- Prior art keywords
- pressure
- safety valve
- air compressor
- piston
- swivel nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The chain safety valve of locomotive air braking system of the present invention, it is made of housing, adjustment swivel nut, spring, piston and valve seat, piston uses plane boss seal form, and piezoelectric pressure indicator is embedded in the bottom of piston, and the conducting wire of sensor is pierced by the top of adjustment swivel nut to connect afterwards with control system.Enhance the stability and reliability of sealing；Intuitive and accurate feed back to of pressure signal can be braked display system and electric control system, double copies protective effect be played in pressure relief system, mechanical part and electronic section have the function of mutually to verify；The security reliability of safety valve is not only increased, can also greatly reduce the detection service work of safety valve, detection cycle once, extends to detection in 6 10 years once from the quarterly detection of prior art；From some acquisition monitor control system in system and the pressure data needed for security protection, it is ensured that uniformity, the accuracy of control of brake system data.
Description
Technical field
The present invention relates to a kind of chain safety valves of locomotive air braking system, belong to locomotive manufacturing technical field.
Background technology
It is acted to ensure that Pneumatic brake systems obtain enough stopping powers and do not generate overvoltage protection, generally in system
It is middle that pressure switch is set to control the start and stop of air compressor.Meanwhile to prevent pressure switch from failing, air compressor does not stop
Work, brake system pressure constantly raise and more than voltage limiting value, are also respectively provided with peace in system pipeline and equipment body position
Full valve, structure are essentially the direct load formula of spring, and the sealing of piston and valve base chamber uses O-ring or round gasket.It is logical
Safety valve pressure release is crossed, system pressure is made to maintain in safety limit.Although safety valve decompression protection system safety, can not hinder
Only air compressor persistently beats wind, and braking system is also just constantly under high pressure conditions dangerous operation.In addition, the O of safety valve
Shape rubber ring is the vulnerable part for being easy to aging rupture again, and spring is also easy in compression process deflection, stuck, further increases generation
The probability of failure damage.In addition, to ensure the stabilization of safety valve, reliable and safety, it is necessary to often be detected maintenance.Frequently
Detection maintenance had both added locomotive maintenance workload and cost, also caused certain damage in itself to valve.
The content of the invention
The purpose of the present invention is exactly to overcome the deficiency of the above-mentioned prior art, provides a kind of chain peace of locomotive air braking system
Full valve.
The object of the present invention is achieved like this：A kind of chain safety valve of locomotive air braking system, by housing, adjustment spiral shell
Set, spring, piston and valve seat are formed, it is characterised in that piezoelectric pressure indicator is embedded in the bottom of the piston, the sensing
The conducting wire of device connects after being pierced by the top of adjustment swivel nut with control system.
In order to which the purpose of the present invention is better achieved, the bottom face of the piston is equipped at least one closed boss of circle.
In order to which the purpose of the present invention is better achieved, the adjustment swivel nut top inner side center is equipped with spring fairlead.
Intuitive and accurate feed back to of pressure signal can be braked display system and electric-controlled by technical scheme
System processed, plays double copies protective effect in pressure relief system, and mechanical part and electronic section have the work(mutually verified
Energy；Not only increase the security reliability of safety valve, can also greatly reduce the detection service work of safety valve, detection cycle from
The quarterly detection of prior art once, extends to 6-10 detections once；From some acquisition monitoring and controlling in system
Pressure data needed for system and security protection, it is ensured that uniformity, the accuracy of control of brake system data；Piston is adopted
With plane boss seal form, the stability and reliability of sealing are enhanced；The setting of guide sleeve has prevented deflection, stuck phenomenon
Generation.
Description of the drawings
Fig. 1 is the chain safety valve structure schematic diagram of locomotive air braking system of the embodiment of the present invention.
In figure mark for：1- housings, 2- adjustment swivel nuts, 3- springs, 4- pistons, 5- valve seats, 6- boss, 7- guide sleeves, 8-
Pressure sensor, 9- conducting wires, 10- handwheels, 11- air inlets, 12- exhaust outlets.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
All other embodiments obtained without making creative work belong to the scope of protection of the invention.
Referring to attached drawing 1, the chain safety valve of locomotive air braking system of the present embodiment, by housing 1, adjustment swivel nut 2, spring
3rd, piston 4 and valve seat 5 are formed.Adjustment swivel nut 2 is fixed on adjustment swivel nut 2 by being threadably mounted at the top of housing 1, handwheel 10
Top.Piston 4 is located at the bottom in housing 1, and the bottom face of piston 4 is equipped with the two closed boss 6 of circle, can reduce the bottom of piston 4
End face and the contact area of valve seat 5, reduce flatness difficulty of processing.The lower end of spring 3 is pressed on piston 4,2 top of adjustment swivel nut
Medial center is equipped with spring fairlead 7, and the upper end of spring 3 is sleeved on guide sleeve 7, withstands on adjustment 2 top inner side of swivel nut, can prevent
There are the defective modes such as deflection, stuck in compression process in spring 3.Piezoelectric pressure indicator 8 is embedded in Gou in a manner of pipe screw thread
The bottom of saddle and bridle a horse 4, the conducting wire 9 of sensor 8 are pierced by and connect afterwards with control system from piston 4 and adjustment swivel nut 2, the system that will be detected
Pressure value is converted into electric signal, is transmitted to control system, works with default air compressor and mends wind minimum pressure values, air pressure
Contracting machine is stopped the excessively high alarming value of standard value, system pressure and safe defective valve air compressor emergency stop pressure value is compared
Right, system performs action according to comparison result generation is corresponding.It alarms in control system, pressure still quickly raises or air pressure
When contracting captain is not stopped the time, safety valve is calibrated or is overhauled.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in foregoing embodiments or carry out equivalent substitution to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical solution spirit and
Scope.
Claims (3)
1. a kind of chain method of controlling security of locomotive air braking system, it is characterised in that take the following steps：
A. safety valve is made of housing, adjustment swivel nut, spring, piston and valve seat, and piezoelectric pressure indicator is embedded in the piston
Bottom, the conducting wire of the sensor connects after being pierced by the top of adjustment swivel nut with control system；
B. preset air compressor operating mend wind minimum pressure values, be stopped standard value, system pressure of air compressor it is excessively high
Alarming value and safe defective valve air compressor emergency stop pressure value；
C. system pressure value pressure sensor detected is converted into electric signal and mends wind most with the work of default air compressor
The be stopped excessively high alarming value of standard value, system pressure and safe defective valve air compressor of small pressure value, air compressor is anxious
Stop pressure value to be compared, system performs action according to comparison result generation is corresponding；
D. when still quickly rise or air compressor are not stopped for a long time for control system alarm, pressure, to safety valve
It is calibrated or is overhauled.
2. the chain method of controlling security of locomotive air braking system according to claim 1, it is characterised in that the piston
Bottom face be equipped at least one closed boss of circle.
3. the chain method of controlling security of locomotive air braking system according to claim 1, it is characterised in that the adjustment
Swivel nut top inner side center is equipped with spring fairlead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610715200.4A CN106065972B (en) | 2016-08-24 | 2016-08-24 | The chain safety valve of locomotive air braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610715200.4A CN106065972B (en) | 2016-08-24 | 2016-08-24 | The chain safety valve of locomotive air braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106065972A CN106065972A (en) | 2016-11-02 |
| CN106065972B true CN106065972B (en) | 2018-06-05 |
Family
ID=57207369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610715200.4A Expired - Fee Related CN106065972B (en) | 2016-08-24 | 2016-08-24 | The chain safety valve of locomotive air braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106065972B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191638B (en) * | 2017-07-25 | 2019-11-22 | 眉山中车制动科技股份有限公司 | Safety valve and Pneumatic brake systems |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702361A (en) * | 2005-02-04 | 2005-11-30 | 华南理工大学 | Safety valve with on-line detection function and detection system therefor |
| JP2007146908A (en) * | 2005-11-24 | 2007-06-14 | Smc Corp | Vacuum pressure adjusting system |
| CN201322121Y (en) * | 2008-11-28 | 2009-10-07 | 蒋浩亮 | Pressure adjustable safety valve |
| CN203115241U (en) * | 2013-04-02 | 2013-08-07 | 中国石油天然气股份有限公司 | Double-pressure side liquid inlet regulating valve |
| CN204985892U (en) * | 2015-10-09 | 2016-01-20 | 北京爱社时代科技发展有限公司 | Automatically controlled compressed air relief pressure valve of intelligence |
-
2016
- 2016-08-24 CN CN201610715200.4A patent/CN106065972B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1702361A (en) * | 2005-02-04 | 2005-11-30 | 华南理工大学 | Safety valve with on-line detection function and detection system therefor |
| JP2007146908A (en) * | 2005-11-24 | 2007-06-14 | Smc Corp | Vacuum pressure adjusting system |
| CN201322121Y (en) * | 2008-11-28 | 2009-10-07 | 蒋浩亮 | Pressure adjustable safety valve |
| CN203115241U (en) * | 2013-04-02 | 2013-08-07 | 中国石油天然气股份有限公司 | Double-pressure side liquid inlet regulating valve |
| CN204985892U (en) * | 2015-10-09 | 2016-01-20 | 北京爱社时代科技发展有限公司 | Automatically controlled compressed air relief pressure valve of intelligence |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106065972A (en) | 2016-11-02 |
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| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20200824 |
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| CF01 | Termination of patent right due to non-payment of annual fee |