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Redundancy device for pressure control of brake cylinder and pressure control method

A technology of pressure control and brake control, which is applied in the direction of brake transmission, brake, transportation and packaging, etc. It can solve the problems that the brake machine cannot normally apply the braking force, the closed-loop control cannot be realized, and the pressure of the brake cylinder is uncontrollable. , to achieve the effects of fast adjustment speed, improved reliability and high control precision

Active Publication Date: 2016-01-13
QINGDAO SRI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing redundant pressure control device for the brake cylinder is mainly composed of a pressure sensor and a number of solenoid valves. The pressure monitoring and solenoid valve control are implemented in a closed-loop control mode, that is, the pressure of the pre-controlled air cylinder and the pressure of the brake cylinder are obtained through the pressure sensor. Target value comparison, adjust the solenoid valve to achieve precise control of the brake cylinder pressure. Therefore, if the pressure sensor fails, the closed-loop control will not be realized, resulting in uncontrollable brake cylinder pressure, and the brake cannot normally apply braking force.

Method used

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  • Redundancy device for pressure control of brake cylinder and pressure control method
  • Redundancy device for pressure control of brake cylinder and pressure control method

Examples

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Effect test

Embodiment 1

[0050] A pressure control redundant device for a brake cylinder, comprising a total air filter, a pressure regulating valve, an air filling solenoid valve, and a first air exhaust solenoid valve arranged in sequence at the main air outlet, and arranged at the general air filter and the pressure regulating valve Between the second exhaust solenoid valve, also include:

[0051] The first pressure sensor connected with the brake control unit of the locomotive brake cylinder and the pre-control air cylinder of the locomotive is used to detect the pressure of the pre-control air cylinder;

[0052] The switching solenoid valve arranged between the total air filter and the pressure regulating valve is used to control the switching valve according to the control command of the brake control unit;

[0053] The second pressure sensor connected with the brake control unit of the locomotive brake cylinder and the pre-control air cylinder is used to detect the pressure of the pre-control a...

Embodiment 2

[0077] figure 2 It is a flowchart of a brake cylinder pressure control method provided by the present invention. The pressure control method of the brake cylinder, including:

[0078] S10: Read the first pressure value of the first pressure sensor.

[0079] S11: Determine whether the first pressure sensor fails according to the first pressure value.

[0080] S12: If not, output a control command according to the current state of the locomotive.

[0081] S13: If yes, output a switching instruction, where the switching instruction includes cutting off the first pressure sensor.

[0082] S14: Read the second pressure value of the second pressure sensor.

[0083] S15: Determine whether the second pressure sensor fails according to the second pressure value.

[0084] S16: If not, output a control command according to the current state of the locomotive.

[0085] S17: If yes, output a switching instruction, where the switching instruction also includes cutting off the second ...

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Abstract

Disclosed is a redundancy device for pressure control of a brake cylinder. The redundancy device for pressure control of the brake cylinder comprises a total air filter, a pressure regulating valve, an air charging solenoid valve, a first air exhaust solenoid valve and a second air exhaust solenoid valve, and further comprises a first pressure sensor, a switching solenoid valve and a second pressure sensor, wherein the total air filter, the pressure regulating valve, the air charging solenoid valve and the first air exhaust solenoid valve are arranged in a total air inlet in sequence, the second air exhaust solenoid valve is arranged between the total air filter and the pressure regulating valve. Due to the fact that the second pressure sensor is added, a brake control unit can detect whether the first pressure sensor has a fault or not at first, the first pressure sensor is switched to the second pressure sensor under the condition that the first pressure sensor has a fault, double guarantees are achieved, and the reliability of a system is improved. In addition, the brake control unit outputs control instructions according to the states of the first pressure sensor and the second pressure sensor and the current state of a locomotive so as to control the corresponding solenoid valves to change air channels, and therefore the regulating speed is high, and the control accuracy is high.

Description

technical field [0001] The invention relates to the technical field of a railway electric locomotive brake system, in particular to a pressure control redundancy device and a control method for a brake cylinder. Background technique [0002] Braking technology is one of the key technologies of trains, and the safety, reliability and stability of the braking system are particularly important. Therefore, a good pressure control redundant device can improve the safety performance of the braking system. [0003] The existing brake cylinder pressure control redundant device is mainly composed of a pressure sensor and a number of solenoid valves. The pressure monitoring and solenoid valve control are implemented in a closed-loop control mode, that is, the pressure of the pre-controlled air cylinder and the pressure of the brake cylinder are obtained through the pressure sensor. Target value comparison, adjust the solenoid valve to achieve precise control of the brake cylinder pres...

Claims

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Application Information

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IPC IPC(8): B60T13/68
CPCB60T13/68B60T13/683
Inventor 索建国刘泉石亿刘杰罗超周鹏晏义彭学前
Owner QINGDAO SRI TECH CO LTD
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