CN215474413U - Pneumatic control device for air supply of rail vehicle door - Google Patents
Pneumatic control device for air supply of rail vehicle door Download PDFInfo
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- CN215474413U CN215474413U CN202122383087.3U CN202122383087U CN215474413U CN 215474413 U CN215474413 U CN 215474413U CN 202122383087 U CN202122383087 U CN 202122383087U CN 215474413 U CN215474413 U CN 215474413U
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Abstract
The utility model discloses a pneumatic control device for air supply of a rail vehicle door, which relates to the technical field of rail vehicle braking and air supply systems, and aims to solve the problems that the total air pressure of a vehicle is low due to serious leakage of a door air terminal device, emergency braking is triggered to be applied, and the normal operation of the vehicle is influenced. This neotype pneumatic control device can realize the accurate detection of total wind pipeline and door air feed pipeline pressure, can realize centralized door air feed pressure's adjustment simultaneously, and the configuration cost of door system has been reduced in the easy access maintenance.
Description
Technical Field
The utility model relates to the technical field of rail vehicle braking and air supply systems, in particular to a pneumatic air supply control device for a rail vehicle door.
Background
Present rail vehicle, in order to guarantee the door leakproofness in the middle of the high-speed operation, it warp in order to overcome meeting door leaf to increase the door system restraint, all can dispose pneumatic auxiliary lock at each door, the pneumatic auxiliary lock of each door all disposes parts such as air-vent valve alone, and by the supply that braking system total wind pipeline directly provided compressed air under the car in unison, the risk that total wind pipeline compressed air takes place the leakage has been promoted greatly to a large amount of door wind terminals for the full train, the compressed air leakage will lead to the vehicle total wind pressure low seriously, trigger emergency braking and apply, and then influence the normal operation of vehicle. In addition, according to the current vehicle design, when the main air pipeline has large air consumption or serious leakage to cause the pressure of the main air pipeline to rapidly drop, compressed air with required pressure cannot be provided for the pneumatic auxiliary lock of the vehicle door to maintain the tightness of the vehicle door, so that the comfort of passengers is influenced, and the safety of the vehicle door is influenced.
Therefore, it is desirable to design a pneumatic control device for door supply of a rail vehicle for protecting the total wind pressure and providing a reliable and stable supply of compressed air to the door.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pneumatic control device for air supply of a railway vehicle door, which is used for solving the problems that the total air pressure of a vehicle is low due to serious leakage of a door air terminal device, the application of emergency braking is triggered, and the normal operation of the vehicle is influenced, and simultaneously can solve the problems that the pressure of a total air pipeline is rapidly reduced due to larger air consumption or serious leakage of the total air pipeline, and compressed air cannot be normally supplied to a pneumatic auxiliary lock of the vehicle door.
A pneumatic control device for air supply of a rail vehicle door comprises an air circuit unit and a circuit unit, wherein the air circuit unit and the circuit unit respectively comprise an isolating plug with an electric contact, a first pressure sensor, a second pressure sensor and a vehicle door air supply electromagnetic valve;
the gas circuit unit also comprises a test joint, a pressure gauge, a one-way check valve, an air supply cylinder and a pressure regulating valve;
the circuit unit also comprises a vehicle door air supply relay, a pipeline leakage relay, a central control unit and an input/output unit;
one end of a gas path interface of the electrified contact isolation cock is connected with a main air pipeline branch of the vehicle, the other end of the gas path interface of the electrified contact isolation cock is respectively connected with a first pressure sensor and a one-way check valve, the other end of the one-way check valve is connected with a first gas path interface of a vehicle door air supply electromagnetic valve, a second gas path interface of the vehicle door air supply electromagnetic valve is sequentially connected with a second pressure sensor, a test joint, a pressure gauge, an air supply cylinder and a pressure regulating valve, and the other end of the pressure regulating valve is connected with a downstream vehicle door air supply gas path;
the central control unit is electrically connected with the input and output unit; the input and output unit is respectively and electrically connected with the first pressure sensor, the second pressure sensor, one end of an electric contact of the electrified contact isolation plug door, one end of a vehicle door air supply relay coil and one end of a pipeline leakage relay coil;
the other end of the live contact isolation plug door electrical contact and one end of the vehicle door air supply relay contact are both connected with a power supply DC 110V;
the other end of the vehicle door air supply relay contact is connected with the first end of the vehicle door air supply electromagnetic valve;
the other end of the vehicle door air supply relay coil and the other end of the pipeline leakage relay coil are both connected with a negative line;
one end of the pipeline leakage relay contact is connected with the second end of the vehicle door air supply electromagnetic valve, and the other end of the pipeline leakage relay contact is connected with the negative line.
The utility model has the beneficial effects that:
the control device can realize automatic protection of the pressure of the main air pipeline when the air leakage of the air equipment for the vehicle door occurs seriously, and can take the leakage fault as one of judgment conditions for recovering the conduction of the air passage, thereby avoiding the influence on the service life of the electromagnetic valve caused by the long-time repeated cutoff, conduction and cutoff of the air supply electromagnetic valve of the vehicle door. In addition, when the pressure of the main air pipeline is rapidly reduced due to large air consumption or serious leakage of the main air pipeline, the pneumatic auxiliary lock of the vehicle door can be maintained to normally work until the vehicle runs to the next safe parking station.
The utility model can realize the adjustment of the air supply pressure of the centralized vehicle door, does not need to separately configure a pressure regulating valve for each pneumatic auxiliary lock, reduces the manufacturing cost of the vehicle and is convenient for overhaul and maintenance.
Drawings
FIG. 1 is a schematic diagram of a gas circuit for implementing the pneumatic control device for air supply of the door of the railway vehicle;
fig. 2 is an electrical schematic diagram of a specific implementation of the pneumatic control device for air supply of the door of the railway vehicle.
Detailed Description
The present embodiment is described with reference to fig. 1 and fig. 2, and a pneumatic control device for door air supply of a rail vehicle, the pneumatic control device for door air supply is composed of an air circuit unit and an electric circuit unit, the air circuit and the electric circuit are associated with each other, wherein:
the gas circuit unit includes: the device comprises an electrified contact isolation cock 1, a first pressure sensor 2, a second pressure sensor 3, a test joint 6, a pressure gauge 7, a one-way check valve 4, an air supply cylinder 8, a car door air supply electromagnetic valve 5 and a pressure regulating valve 9.
The circuit unit includes: the system comprises an electrified contact isolation cock 1, a first pressure sensor 2, a second pressure sensor 3, a vehicle door air supply electromagnetic valve 5, a vehicle door air supply relay 10, a pipeline leakage relay 11, a Central Control Unit (CCU)12 and an input and output unit (RIOM) 13.
The components described in the air circuit unit and the circuit unit are the same.
The air passage interface 1 of the electrified contact isolation cock 1 is connected with a main air pipeline branch of the vehicle, the air passage interface 2 of the electrified contact isolation cock 1 is connected with the air passage interface 1 of the first pressure sensor 2 and the one-way check valve 4, the air passage interface 2 of the one-way check valve 4 is connected with the air passage interface 1 of the door air supply electromagnetic valve 5, the air passage interface 2 of the door air supply electromagnetic valve 5 is connected with the second pressure sensor 3, the test joint 6, the pressure gauge 7, the air supply air cylinder 8 and the air passage interface 1 of the pressure regulating valve 9, and the air passage interface 2 of the pressure regulating valve 9 is connected with a downstream door air supply air passage.
One end of the electric contact of the electrified contact isolation cock 1 is connected with a power supply DC110V, the other end of the electric contact is connected with RIOM13, the electric contact of the electrified contact isolation cock 1 is closed when two air path interfaces are conducted, and the electric contact of the electrified contact isolation cock 1 is disconnected when the air path is cut off.
The first pressure sensor 2 and the second pressure sensor 3 respectively collect total wind pressure and downstream door air supply gas path pressure, convert air pressure signals into electric signals and send the electric signals to the RIOM13, and the electric signals are finally sent to the CCU12 through the RIOM13 through a vehicle bus for relevant logic judgment of the CCU 12.
The first end of the coil of the vehicle door air supply relay 10 is connected with RIOM13, the second end of the coil is connected with a negative line, when the total wind pressure is less than 6.5bar, CCU12 drives the coil of the vehicle door air supply relay 10 to lose power through RIOM13, and the contact of the coil is disconnected; when the total wind pressure rises to 7.5bar, the CCU12 drives the coil of the door wind supply relay 10 to be electrified through the input and output unit RIOM13, and the contact of the coil is closed.
The first end of the contact of the door air supply relay 10 is connected with the power supply DC110V, and the second end thereof is connected with the first end of the door air supply electromagnetic valve 5.
The first end of the coil of the pipeline leakage relay 11 is connected with RIOM13, the second end of the coil is connected with a negative line, when the pressure of an air supply air path of a downstream car door continuously drops for more than 5 seconds, CCU12 drives the coil of the pipeline leakage relay 11 to be electrified through RIOM13, and the contact of the coil is disconnected; and the contact point is closed again until the next vehicle is powered off.
The first end of the contact of the pipeline leakage relay 11 is connected with the second end of the vehicle door air supply electromagnetic valve 5, and the second end of the contact is connected with the negative line.
And the first end of the vehicle door air supply electromagnetic valve 5 is connected with the second end of the contact of the vehicle door air supply relay 10, and the second end of the vehicle door air supply electromagnetic valve is connected with the first end of the contact of the pipeline leakage relay 11.
In this embodiment, the control device needs to be daily overhauled and maintained:
the electrified contact isolation cock 1 is used for overhauling and maintaining a car door air supply pneumatic control device and wind equipment for a downstream car door air supply pipeline, when the electrified contact isolation cock 1 is cut off, the connection between a main air pipeline and a car door air supply pipeline is disconnected, and meanwhile, the state of the electrified contact isolation cock 1 is fed back to the CCU12 through RIOM13 to be recorded or displayed so as to prompt drivers and passengers of the vehicle.
The test connector 6 can measure the pressure of the air supply cylinder 8 and the air supply gas circuit of the downstream vehicle door, and the pressure gauge 7 can display the pressure of the air supply cylinder 8 and the air supply gas circuit of the downstream vehicle door in real time.
The pressure regulating valve 9 can uniformly regulate the pressure of the air supply gas circuit of the downstream vehicle door, can regulate the working pressure of the pneumatic auxiliary lock of the vehicle door, and can also regulate the debugging pressure of the pneumatic auxiliary lock of the vehicle door, so that the low-pressure function test of the vehicle door system can be conveniently carried out during routine test and daily overhaul and maintenance of the vehicle, and each vehicle door of the whole vehicle does not need to be operated one by one.
The control device of the embodiment is adopted to realize the control of air leakage of the pneumatic auxiliary lock of the vehicle door and the control of large air consumption or air leakage of the main air pipeline.
Serious air leakage occurs in the pneumatic auxiliary lock of the vehicle door:
when the wind equipment for the downstream door has serious air leakage, the pressure of the main wind pipeline is continuously reduced, the first pressure sensor 2 converts the detected main wind pressure into an electric signal and transmits the electric signal to the CCU12 through RIOM13 in real time, if the detected main wind pressure is less than 6.5bar, the CCU12 drives the door wind supply relay 10 to lose power through RIOM13, the contact of the door wind supply relay is disconnected, the door wind supply electromagnetic valve 5 loses power, the gas circuit interface 1 of the door wind supply electromagnetic valve 5 is disconnected with the gas circuit interface 2, the connection between the main wind pipeline and the door wind supply pipeline is disconnected, and the pressure of the main wind pipeline is automatically protected.
When the door air supply electromagnetic valve 5 is powered off, the total air pipeline pressure is gradually increased under the action of air charging of a main air compressor of the vehicle, and when the first pressure sensor 2 detects that the total air pressure is increased to 7.5bar, the CCU12 drives the door air supply relay 10 to be powered on through the RIOM13, and the contact of the door air supply relay is closed. Meanwhile, the second pressure sensor 3 detects the pressure of the downstream door air supply air passage, the detected pressure signal is converted into an electric signal and is transmitted to the CCU12 in real time through RIOM13, the CCU12 judges that the pressure of the downstream door air supply air passage continuously drops within 5 seconds according to the pressure signal of the second pressure sensor 3, the RIOM13 drives the pipeline leakage relay 11 to be powered on, and the contact of the relay is disconnected. Therefore, in this case, even if the total wind pressure is restored to 7.5bar or more, the contact of the door air supply relay 10 is closed, but the downstream door air supply path is seriously leaked, the contact of the pipeline leakage relay 11 is opened, the door air supply electromagnetic valve 5 is still in a power-off state, and the compressed air supplement of the total wind pipeline to the downstream door air supply path cannot be restored.
The air consumption of the total air pipeline is large or serious air leakage occurs:
when the air consumption of the main air pipeline is large or serious air leakage occurs, if the first pressure sensor 2 detects that the total air pressure is reduced to 6.5bar, the CCU12 drives the vehicle door air supply relay 10 to lose power through the input and output unit (RIOM)13, the contact is disconnected, the vehicle door air supply electromagnetic valve 5 loses power, the air path interface 1 of the vehicle door air supply electromagnetic valve 5 is cut off from the air path interface 2, and then the connection between the main air pipeline and the vehicle door air supply pipeline is disconnected. At this moment, the air supply cylinder 8 is protected by the one-way check valve 4, and cannot drop along with the pressure drop of the total air pipeline, so that enough compressed air can be provided to ensure that the vehicle can complete the air-tight function after the door of the vehicle is closed at least once until the vehicle runs to the next safe stop point.
After the door air supply electromagnetic valve 5 is powered off, if leakage faults of a main air pipeline are eliminated or large air consumption is completed, the pressure of the main air pipeline is gradually increased under the action of air charging of a main air compressor of the vehicle, and when the pressure sensor 2 detects that the total air pressure is increased to 7.5bar, the CCU12 drives the door air supply relay 10 to be powered on through the RIOM13, and the contact of the door air supply relay is closed; if the downstream door air supply air passage does not leak seriously at the moment, the contact of the pipeline leakage relay 11 is closed, then after the contact of the door air supply relay 10 is closed, the door air supply electromagnetic valve 5 is powered on, the air passage interface 1 of the door air supply electromagnetic valve 5 is communicated with the air passage interface 2, and then the compressed air supplement of the main air passage to the downstream door air supply air passage is recovered.
In the embodiment, the pressure sensors respectively detect the pressure of the main air pipeline and the pressure of the door air supply pipeline and send the pressure to the train CCU, and the train CCU controls the power on and power off of the electromagnetic valve according to related control logic so as to control the conduction and the cut-off of the door air supply pipeline and play a role in protecting the pressure of the main air pipeline under specific working conditions such as serious leakage of door air equipment; the arrangement of the one-way check valve and the air supply air cylinder can prevent the air supply pressure of the vehicle door from flowing back to the main air pipeline under the specific working conditions that the main air pipeline leaks seriously and the like, and the air supply air cylinder continues to provide compressed air for the air equipment of the vehicle door, so that the function of protecting the air supply pressure of the vehicle door and maintaining the pneumatic auxiliary lock of the vehicle door is achieved.
The pneumatic control device can realize accurate detection of the pressure of the main air pipeline and the pressure of the door air supply pipeline, and sends the pipeline pressure to the central control unit of the train in real time, and controls the on and off of the air supply air channel of the door air supply pneumatic control device through the central control unit of the train, thereby playing the role of protecting the pressure of the main air pipeline or the door air supply air channel under a specific working condition, simultaneously realizing the adjustment of the centralized door air supply pressure, facilitating the overhaul and the maintenance and reducing the configuration cost of a door system.
Claims (4)
1. The utility model provides a rail vehicle door air feed pneumatic control device, the device comprises gas circuit unit and circuit unit two parts, characterized by: the gas circuit unit and the circuit unit respectively comprise an isolating plug valve (1) with a live contact, a first pressure sensor (2), a second pressure sensor (3) and a vehicle door air supply electromagnetic valve (5);
the air path unit also comprises a test joint (6), a pressure gauge (7), a one-way check valve (4), an air supply cylinder (8) and a pressure regulating valve (9);
the circuit unit also comprises a vehicle door air supply relay (10), a pipeline leakage relay (11), a central control unit (12) and an input/output unit (13);
one end of an air path interface of the electrified contact isolation cock (1) is connected with a main air pipeline branch of the vehicle, the other end of the air path interface of the electrified contact isolation cock (1) is respectively connected with the first pressure sensor (2) and the one-way check valve (4), the other end of the one-way check valve (4) is connected with a first air path interface of the door air supply electromagnetic valve (5), a second air path interface of the door air supply electromagnetic valve (5) is sequentially connected with the second pressure sensor (3), the test joint (6), the pressure gauge (7), the air supply cylinder (8) and the pressure regulating valve (9), and the other end of the pressure regulating valve (9) is connected with a downstream door air supply air path;
the central control unit (12) is electrically connected with the input and output unit (13); the input and output unit (13) is respectively and electrically connected with the first pressure sensor (2), the second pressure sensor (3), one end of an electric contact of the electrified contact isolation cock (1), one end of a coil of the vehicle door air supply relay (10) and one end of a coil of the pipeline leakage relay (11);
the other end of the electric contact of the electrified contact isolation cock (1) and one end of the contact of the vehicle door air supply relay (10) are both connected with a power supply DC 110V;
the other end of the contact of the vehicle door air supply relay (10) is connected with the first end of the vehicle door air supply electromagnetic valve (5);
the other end of the coil of the vehicle door air supply relay (10) and the other end of the coil of the pipeline leakage relay (11) are both connected with a negative line;
one end of the contact of the pipeline leakage relay (11) is connected with the second end of the air supply electromagnetic valve (5) of the vehicle door, and the other end of the contact of the pipeline leakage relay (11) is connected with the negative line.
2. The pneumatic control device for air supply of the railway vehicle door as claimed in claim 1, wherein: the live contact isolation cock (1) is used for overhauling and maintaining the car door air supply pneumatic control device and the wind equipment for the downstream car door air supply air passage, when the live contact isolation cock (1) is cut off, the connection between the main air pipeline and the car door air supply pipeline is disconnected, and meanwhile, the state of the live contact isolation cock (1) is fed back to the central control unit (12) through the input and output unit (13) and is recorded or displayed for prompting the drivers and passengers of the vehicle.
3. The pneumatic control device for air supply of the railway vehicle door as claimed in claim 1, wherein:
the pressure measurement is carried out to air supply reservoir (8) and low reaches door air feed gas circuit pressure to test connector (6), and manometer (7) are used for showing air supply reservoir (8) and low reaches door air feed gas circuit pressure in real time.
4. The pneumatic control device for air supply of the railway vehicle door as claimed in claim 1, wherein:
the pressure regulating valve (9) is used for uniformly regulating the pressure of an air supply gas circuit of a downstream vehicle door to regulate the working pressure of a pneumatic auxiliary lock of the vehicle door or regulate the debugging pressure of the pneumatic auxiliary lock of the vehicle door, so that the low-pressure function test of a vehicle door system is conveniently carried out during routine vehicle test and routine overhaul and maintenance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383087.3U CN215474413U (en) | 2021-09-29 | 2021-09-29 | Pneumatic control device for air supply of rail vehicle door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122383087.3U CN215474413U (en) | 2021-09-29 | 2021-09-29 | Pneumatic control device for air supply of rail vehicle door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215474413U true CN215474413U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122383087.3U Active CN215474413U (en) | 2021-09-29 | 2021-09-29 | Pneumatic control device for air supply of rail vehicle door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215474413U (en) |
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2021
- 2021-09-29 CN CN202122383087.3U patent/CN215474413U/en active Active
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