CN218085504U - Novel railway locomotive desicator control module - Google Patents
Novel railway locomotive desicator control module Download PDFInfo
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- CN218085504U CN218085504U CN202222894608.6U CN202222894608U CN218085504U CN 218085504 U CN218085504 U CN 218085504U CN 202222894608 U CN202222894608 U CN 202222894608U CN 218085504 U CN218085504 U CN 218085504U
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Abstract
The utility model provides a novel railway locomotive dryer control module, which comprises a power converter, a microcomputer controller, a bidirectional power switch module, an air compressor working indicator lamp, a monitoring indicator lamp, a solenoid valve indicator lamp and a heating indicator lamp, which are all hermetically arranged in a box body, and the box body is arranged on a heat dissipation plate; the control module also comprises an external element, and the external element comprises a power socket, a heating plate, a temperature sensor and an electromagnetic valve; the panel of the box body is only provided with a connector connected with an external element; the power socket is connected with the power converter, the power converter is connected with the microcomputer controller and the electromagnetic valve, and a bidirectional power switch module is arranged between the power socket and the heating plate. The utility model discloses do not use the rectifier bridge that calorific capacity is big, electric power distribution is at module internal connection, and outside wiring is very succinct, has realized the whole functions of automatically controlled ware, has state display, oneself protect function, and replacement transformation simple accurate. The utility model discloses an embedment structure, waterproof anti-soil.
Description
Technical Field
The utility model belongs to the technical field of the automatically controlled ware of rail vehicle, concretely relates to novel railway locomotive desicator control module.
Background
The model 994-501MC electric controller of the United states GW company is widely used for controlling a double-tower dryer of a locomotive, but the design is unreasonable, a plurality of problems occur in use, the problems are all extremely serious problems, and the normal operation of the locomotive is seriously influenced. The following problems are specifically present: 1. The rectifier bridge generates heat: because the electric heating plate of the electric controller of the type has larger power and the current reaches 10A, the rectifier bridge heats seriously. The rectifier bridge is fixed on the iron plate, and the heat conductivity of the iron plate is very poor, so that the temperature of the rectifier bridge continuously rises, the plug spring terminal and the lead are burnt out if the temperature of the rectifier bridge is light, and the rectifier bridge loses function and even is fried if the temperature of the rectifier bridge is heavy. The whole controller cannot normally supply power, the dryer loses functions, compressed air cannot be purified, and the safe operation of the whole train braking system is seriously influenced. The current is large, the heating is large, the heat dissipation is not good, the problem cannot be solved fundamentally by replacing the rectifier bridge, and the heating of the rectifier bridge is always a great hidden trouble. 2. The connection terminal generates heat: the power distribution of the controller is distributed by the plug spring terminals, the terminals with poor contact are easy to generate heat and burn out due to large current, more than 6 plug springs with large current are used, and one plug spring does not influence the whole. 3. The switch tube generates heat: the switch tube is the control switch of electric heating board, also because the electric current is big, and the heat dissipation is not good, causes the temperature rise too high, generates heat and burns out. 4. The control panel locally generates heat: the control panel is provided with a power management element, the heat productivity is also a little large, and the matched radiating fins are unreasonable, so that the local heating is caused, and the PCB copper sheet is burnt. 5. The control panel is exposed and is easy to be polluted and damaged. The 994-501MC type electric controller not only influences the normal work of the locomotive, but also improves the after-sale service cost and the replacement and maintenance cost, consumes manpower and material resources, and therefore a novel railway locomotive dryer control module is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming above-mentioned defect, providing a novel locomotive desicator control module, not generating heat, not burning the line, the status display is clear, the embedment structure, waterproof anti-soil.
In order to achieve the above object, the present invention provides the following technical solutions:
a novel railway locomotive dryer control module comprises a power converter, a microcomputer controller, a bidirectional power switch module, an air compressor working indicator lamp, a monitoring indicator lamp, an electromagnetic valve indicator lamp and a heating indicator lamp which are all hermetically arranged in a box body, wherein the box body is arranged on a heat dissipation plate; the control module also comprises an external element, wherein the external element comprises a power socket, a heating plate, a temperature sensor and an electromagnetic valve; the panel of the box body is only provided with a connector connected with an external element; the power socket is connected with the power converter, the power converter is respectively connected with the microcomputer controller and the electromagnetic valve, a bidirectional power switch module is arranged between the power socket and the heating plate, and the bidirectional power switch module is connected with the microcomputer controller; the heating plate is connected with the temperature sensor, and the temperature sensor is connected with the microcomputer controller.
Furthermore, the air compressor work indicator light, the monitoring indicator light, the electromagnetic valve work indicator light and the heating work indicator light are all connected with the microcomputer controller.
Further, the electromagnetic valve comprises a first electromagnetic valve and a second electromagnetic valve.
Further, the power converter is a low-power converter.
Further, the bidirectional power switch module is a bidirectional high-power switch module.
Further, the temperature sensor is a thermistor.
Furthermore, the box body is a plastic box.
Further, the plastic cartridge has a size of 83mm 48mm 17mm.
Further, the size of the heat dissipation plate is 120mm 55mm 12mm.
Furthermore, the novel railway locomotive dryer control module is internally provided with an encapsulating structure.
Compared with the prior art, the utility model discloses an advantage and beneficial effect do:
the utility model provides a novel desicator control module does not use the rectifier bridge that calorific capacity is big, and power distribution is at module internal connection, and outside wiring is very succinct. No heating and no wire burning, and when the heating working condition is adopted, the module generates heat slightly and the temperature rise is less than 20 ℃. The utility model discloses not only realized whole functions of automatically controlled ware, be equipped with the pilot lamp moreover, had status display, oneself protect function, replacement transformation simple accurate, thoroughly eliminated above-mentioned hidden danger. The utility model discloses an embedment structure, waterproof anti-soil.
Drawings
FIG. 1 is a schematic exterior view of a novel railroad locomotive dryer control module;
FIG. 2 is a schematic diagram of the internal structure of a novel railroad locomotive dryer control module;
FIG. 3 is a schematic view of the status indicator lamp, wherein A is a schematic view of the flash during normal operation, and B is a schematic view of the flash during a fault status;
in the figure, 1, a power socket, 2, a power converter, 3, a microcomputer controller, 4, a bidirectional power switch module, 5, a heating plate, 6, a temperature sensor, 7, an SV1 electromagnetic valve, 8, an SV2 electromagnetic valve, 9, an air compressor work indicator lamp, 10, a monitoring indicator lamp, 11, an SV1 indicator lamp, 12, an SV2 indicator lamp, 13, a heating indicator lamp, 14 and a plastic box.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying drawings. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1 to 3, the embodiment provides a novel railway locomotive dryer control module, the specific model is 994-501MC (JKG 5), and the novel railway locomotive dryer control module comprises a power converter 2, a microcomputer controller 3, a bidirectional power switch module 4, a power converter 2, an air compressor work indicator lamp 9, a monitoring indicator lamp 10, an SV1 indicator lamp 11, an SV2 indicator lamp 12 and a heating indicator lamp 13, which are hermetically installed in a plastic box 14, and the plastic box 14 is installed on a heat dissipation plate. The plastic box 14 has a size of 83mm 48mm 17mm. The size of the heat dissipation plate is 120mm 55mm 12mm. The control module further comprises an external element, wherein the external element comprises a power socket 1, a heating plate 5, a temperature sensor 6, an SV1 electromagnetic valve 7 and an SV2 electromagnetic valve 8; and only a connector connected with an external element is arranged on the panel of the plastic box. Supply socket 1 is connected with power converter 2, and power converter 2 is connected with microcomputer control ware 3, SV1 solenoid valve 7, SV2 solenoid valve 8, is equipped with two-way power switch module 4 between supply socket 1 and the hot plate 5, and two-way power switch module 4 is connected with microcomputer control ware 3. The temperature sensor 6 is connected to the heating plate 5. The air compressor working indicator lamp 9, the monitoring indicator lamp 10, the SV1 indicator lamp 11, the SV2 indicator lamp 12 and the heating indicator lamp 13 are all connected with the microcomputer controller 3. The novel railway locomotive dryer control module is internally provided with an encapsulating structure.
The power socket 1 is connected with a locomotive direct-current 74V power supply and an air compressor signal, a low-power supply converter 2 is arranged in the module, the 74V power supply is converted into low-voltage power suitable for the microcomputer controller 3, the SV1 electromagnetic valve 7 and the SV2 electromagnetic valve 8 are powered, the power of the SV1 electromagnetic valve 7 and the SV2 electromagnetic valve 8 is less than 6W, the heat loss is very low and can be almost ignored. The power of the heating plate 5 is more than 700W, the current reaches 10A, and the circuit is difficult to process and is easy to heat seriously. The utility model discloses a module is controlled switching on and turn-off of hot plate 5 by two-way power switch module 4 (two-way high-power switch module), because two-way controllable, so do not need to install the rectifier bridge like US 994-501MC to after omitting the rectifier bridge, the wiring also becomes very simple. The switch module also has low on-resistance and a current-voltage feedback function, so that the microcomputer controller 3 can monitor the working state of the microcomputer controller. The working state of the novel railway locomotive dryer control module is controlled by the microcomputer controller 3, and the working state is displayed through the indicating lamp.
The indicator light of the novel railway locomotive dryer control module is also a feature, the U.S. 994-501MC has no indicator light, the working state of a circuit board cannot be seen visually, and the novel railway locomotive dryer control module solves the problem and is popular with locomotive maintenance personnel.
1. Time controller time conversion is gone on at the air compressor machine during operation, and air compressor machine work pilot lamp 9 (yellow light) are bright, indicate that the air compressor machine is working, and solenoid valve SV1, solenoid valve SV2 can work the conversion in turn. The SV1 indicator 11 (green light) is on, indicating that the solenoid valve SV 17 is operating, and the SV2 indicator 12 (green light) is on, indicating that the solenoid valve SV2 is operating.
2. The temperature sensor 6 detects that the temperature of the valve body is lower than 5 ℃, the heating plate 5 is electrified to work, the heating indicator lamp 13 (red light) is on, and when the temperature rises to 8 ℃, the heating is stopped.
3. The temperature sensor 6 is a thermistor, the resistance value is 4.7K at the normal temperature of 25 ℃ and 14K at the temperature of 0 ℃, and the detection can be carried out by using a digital multimeter ohmic contact.
4. Module protection function
The electromagnetic valve overcurrent protection function is realized, when the resistance value of the electromagnetic valve is reduced (less than 20 ohms), the coil is in fault, and the alarm prompt is realized. And if the electromagnetic valve is disconnected (or not connected), an alarm prompt is also given. The heating overcurrent protection function is realized, when the heating plate 5 is in short circuit and the current is more than 20A, the heating is automatically cut off, and the alarm prompt is given. If the heating plate 5 is broken (or not connected), an alarm is also given. The temperature sensor 6 is off or short-circuited and has alarm prompt.
5. And the power supply indication and the alarm prompt are realized by monitoring indicator lamps. When the normal work, status indicator lamp flash once per second, indicate the trouble, and the time of flashing is some more than long, distinguishes very easily.
Taking one flash per second as an interval, the number of long flashes is a fault category prompt:
long flash 1: when the SV1 fails, the SV1 indicator lamp is on and is open, otherwise, the SV1 indicator lamp is short-circuited;
under long flash 2: when the SV2 fails, the SV2 indicator lamp is turned on, namely an open circuit is formed, and otherwise, the SV2 indicator lamp is short-circuited;
long flash 3: heating the fault, and if the heating temperature is not reached, indicating that the fault is open circuit, otherwise, short circuit or overcurrent;
long flash 4: temperature sensor failure, open circuit or short circuit.
Long flash 5: the supply voltage is below 45V, or the module is over-temperature.
When the alarm prompt appears, whether the related line has short circuit or open circuit fault is checked.
The module parameters of the embodiment:
working voltage: DC is 45-85V, and the power supply plug-in sheet is not divided into positive and negative;
electromagnetic valve: 12V direct current solenoid valve, coil resistance >20 ohm;
heating temperature: <5 ℃, heating current: <15A;
the temperature of the working environment: minus 40 ℃ to plus 70 ℃.
The working principle is as follows:
the A end and the C end of the connector provide a 74V direct current power supply, the B end is an air compressor working signal end, the end voltage is 74V when the air compressor works, and the end of the air compressor which does not work has no voltage.
The whole control process is carried out by a microcomputer chip U1 of the microcomputer controller 3, after 17 seconds, a control signal is sent to conduct the MOS tube Q1, and the electromagnetic valve SV1 is electrified. After 48 seconds, the MOS tube Q1 is closed, and the electromagnetic valve SV 17 is de-energized. Then, at an interval of 17 seconds, a control signal is sent to the MOS tube Q2, the MOS tube Q2 is conducted, and the electromagnetic valve SV2 is electrified. After 48 seconds, the MOS tube Q2 is closed, and the electromagnetic valve SV2 is de-energized. 823060, 8230, and so on.
And converting the 74V voltage of the end B of the connector (an air compressor working signal) into a 5V voltage, and supplying the converted voltage to a microcomputer chip for judging the working condition of the air compressor. When the air compressor machine during operation, above-mentioned duty cycle can normally circulate. When the air compressor does not work, the circulation is suspended, and the electromagnetic valve is powered off. Therefore, the power-on time of the electromagnetic valve is kept at 48 seconds, and the timing memory function is realized.
In winter, in order to ensure that the valve body is not frozen, a heat preservation control circuit is arranged on the electric control plate, the temperature sensor 6 converts a temperature signal into a voltage signal, the voltage signal is supplied to the microcomputer chip to send a heating signal to the bidirectional power switch module 4, and the heating plate 5 is controlled to be powered on or powered off. When the temperature is lower than 5 ℃, the heating plate 5 is electrified to work, the heating indicator lamp 13 (red light) is turned on, and when the temperature rises to 8 ℃, the heating is stopped.
The circuit has an overcurrent protection function, and the overcurrent protection functions of the solenoid valve (SV 1 solenoid valve and SV2 solenoid valve) and the heating plate 5 are judged by detecting the magnitude of working current by a microcomputer chip and send a fault signal to a detection indicator lamp.
The working condition of the whole circuit is reflected by the display of the indicator light. The air compressor operation indicator lamp 9, the SV1 indicator lamp 11, the SV2 indicator lamp 12, and the heating indicator lamp 13 are all on when operating, and off when not operating.
The monitoring indicator light 10 takes one flash per second as an interval, and the number of long flashes is a fault type prompt:
long flash 1: SV1 fault, SV1 lamp is on open circuit, otherwise short circuit;
under long flash 2: the SV2 has a fault, the SV2 lamp is open, or short circuit is caused;
long flashing 3 times: heating the fault, and prompting the fault to be open circuit if the heating temperature is not reached, or short circuit or overcurrent;
long flash 4: temperature sensor failure, open circuit or short circuit.
Long flash 5: the supply voltage is below 45V, or the module is over-temperature.
As described above, the above embodiments are not limiting embodiments of the present invention, and modifications or equivalent variations made by those skilled in the art based on the substance of the present invention are within the technical scope of the present invention.
Claims (10)
1. A novel railway locomotive dryer control module is characterized by comprising a power converter, a microcomputer controller, a bidirectional power switch module, an air compressor working indicator lamp, a monitoring indicator lamp, an electromagnetic valve indicator lamp and a heating indicator lamp which are all hermetically arranged in a box body, wherein the box body is arranged on a heat dissipation plate; the control module further comprises an external element, and the external element comprises a power socket, a heating plate, a temperature sensor and an electromagnetic valve; the panel of the box body is only provided with a connector connected with an external element; the power socket is connected with the power converter, the power converter is respectively connected with the microcomputer controller and the electromagnetic valve, a bidirectional power switch module is arranged between the power socket and the heating plate, and the bidirectional power switch module is connected with the microcomputer controller; the heating plate is connected with the temperature sensor, and the temperature sensor is connected with the microcomputer controller.
2. The novel railroad locomotive dryer control module of claim 1, wherein the air compressor operation indicator light, the monitoring indicator light, the solenoid valve operation indicator light and the heating operation indicator light are connected with the microcomputer controller.
3. The novel railroad locomotive dryer control module of claim 1, wherein the solenoid valve comprises a first solenoid valve and a second solenoid valve.
4. The new railroad locomotive dryer control module of claim 1 wherein the power converter is a low power converter.
5. The novel railroad locomotive dryer control module of claim 4, wherein the bi-directional power switch module is a bi-directional high power switch module.
6. The novel railroad locomotive dryer control module of claim 5, wherein the temperature sensor is a thermistor.
7. The new railroad locomotive dryer control module of claim 1, wherein the box is a plastic box.
8. The new railroad locomotive dryer control module of claim 7, wherein the plastic box is 83mm 48mm 17mm in size.
9. The novel railroad locomotive dryer control module of claim 1, wherein the heat sink is 120mm x 55mm x 12mm in size.
10. The novel railroad locomotive dryer control module of claim 1, wherein the novel railroad locomotive dryer control module is internally potted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222894608.6U CN218085504U (en) | 2022-11-01 | 2022-11-01 | Novel railway locomotive desicator control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222894608.6U CN218085504U (en) | 2022-11-01 | 2022-11-01 | Novel railway locomotive desicator control module |
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| Publication Number | Publication Date |
|---|---|
| CN218085504U true CN218085504U (en) | 2022-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222894608.6U Active CN218085504U (en) | 2022-11-01 | 2022-11-01 | Novel railway locomotive desicator control module |
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| Country | Link |
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| CN (1) | CN218085504U (en) |
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- 2022-11-01 CN CN202222894608.6U patent/CN218085504U/en active Active
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