CN212605128U - CO2 refrigerant air conditioner control system for locomotive - Google Patents
CO2 refrigerant air conditioner control system for locomotive Download PDFInfo
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- CN212605128U CN212605128U CN202020434349.7U CN202020434349U CN212605128U CN 212605128 U CN212605128 U CN 212605128U CN 202020434349 U CN202020434349 U CN 202020434349U CN 212605128 U CN212605128 U CN 212605128U
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Abstract
The utility model provides a CO for locomotive2Refrigerant air conditioner control system includes: the air conditioner comprises a control box body, a first control module, an air conditioner execution module and a temperature acquisition module, wherein the first control module, the air conditioner execution module and the temperature acquisition module are arranged in the control box body; the output end of the temperature acquisition module is connected with the input end of the first control module, and the output end of the first control module is connected with the input end of the air conditioner execution module; the temperature acquisition module acquires a temperature signal in the locomotive and sends the temperature signal to the first control module; the first control module receives the temperature signal sent by the temperature acquisition module, processes the temperature signal, sends an instruction to the air conditioner execution module, and controls the air conditioner execution module to act to adjust the temperature. The utility model discloses a will controlThe system module, the air conditioner execution module and the temperature acquisition module are integrated in the control box, and dispersed equipment is integrated together, so that CO is realized2The space of the refrigerant air conditioning system is reduced, and the space utilization rate of a control system of the air conditioning unit is improved.
Description
Technical Field
The utility model relates to a locomotive air conditioner control field especially relates to a CO for locomotive2Refrigerant air conditioner control system.
Background
With the rapid development of the rail transit industry in China, the requirements of drivers and passengers on the temperature comfort and safety in the vehicle are higher and higher; the traditional refrigerant air conditioner is increasingly difficult to meet the latest international requirement on green environmental protection grade, and the environment-friendly refrigerant CO2The refrigerant air conditioner will become a main product for future popularization and use.
The general size of air conditioning unit for the locomotive is all comparatively compact, and most motorcycle types require among the prior art to integrate air conditioner controlling means in air conditioning unit, directly leads to the mounting structure and the space of the control system among the air conditioning unit to diminish. But CO2The refrigerant air-conditioning system is more complex and has more various structures than the traditional refrigerant system; the space of the control system is insufficient, and the internal equipment of the control system cannot be installed, so how to integrate the refrigeration equipment dispersed in the air conditioning unit and achieve the space expansion of the control system is a key technology which must be solved in the process of realizing industrialization.
SUMMERY OF THE UTILITY MODEL
The utility model provides a CO for locomotive2Refrigerant air conditioner control system to overcome above-mentioned technical problem.
The utility model provides a CO for locomotive2Refrigerant air conditioner control system includes: the air conditioner comprises a control box body, a first control module, an air conditioner execution module and a temperature acquisition module, wherein the first control module, the air conditioner execution module and the temperature acquisition module are arranged in the control box body; the temperature acquisition moduleThe output end of the first control module is connected with the input end of the first control module, and the output end of the first control module is connected with the input end of the air-conditioning execution module;
the temperature acquisition module acquires a temperature signal in the locomotive and sends the temperature signal to the first control module;
the first control module receives the temperature signal sent by the temperature acquisition module, processes the temperature signal, sends an instruction to the air conditioner execution module, and controls the air conditioner execution module to act to adjust the temperature.
Further, the control box body is arranged on the upper portion of an air return opening of the air conditioning unit.
Further, the air conditioner execution module includes: the system comprises a ventilator, a condensing fan, a compressor and a heater; the first control module respectively controls the action of the ventilator, the condensation fan, the compressor and the heater.
Furthermore, the temperature acquisition module is including the new trend temperature sensor who gathers the inside and outside temperature of car and the return air temperature sensor who gathers return air temperature in the car.
The control box further comprises a second control module arranged in the control box body, and the second control module is in communication connection with the first control module;
the second control module includes: the electronic expansion valve controller receives CO in a condensation pipeline sent by the refrigerant pressure sensor and the refrigerant temperature sensor respectively2Refrigerant pressure and CO2The temperature of the refrigerant and the opening degree of the electronic expansion valve are adjusted.
Further, the air conditioner execution module further includes: a frequency converter; and the frequency converter receives the instruction sent by the first control module and controls the compressor to act.
The utility model discloses a with control module, air conditioner execution module and temperature acquisition module integration in the control box, with the equipment integration of dispersion together, realized CO2The space of the refrigerant air-conditioning system is reduced, and the improvementThe space utilization rate of the control system of the air conditioning unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 shows CO for a motorcycle of the present invention2A control flow schematic diagram of a refrigerant air-conditioning control system;
FIG. 2 shows CO for a motorcycle of the present invention2Refrigerant air conditioner control system electrical schematic.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a CO for locomotive2Refrigerant air conditioner control system, CO for locomotive2The refrigerant air-conditioning control system is an air-conditioning control box, the air-conditioning control box has a waterproof function, is arranged on the upper part of an air return inlet of the air-conditioning unit, takes away heat by utilizing the flowing of air, is convenient for heat dissipation, has a compact structure, does not need to be installed in an indoor split manner, and saves space for a locomotive. The control box includes: the system comprises a first control module 1, an air conditioner execution module 2 and a temperature acquisition module; the first control module 1 is Siemens SMART series CPU ST30 DC/DCDC, comprises 18 digital quantity input channels and 12 digital quantity output channels, has the length, width and height of 110 multiplied by 100 multiplied by 181, and occupies the minimum space of a control boxThe requirement of the air conditioner on the control of the input and output points is met, and meanwhile, the electronic compatibility requirement of electronic equipment of the rail transit vehicle is met; as shown in fig. 1, the temperature acquisition module comprises a fresh air temperature sensor 11.1 and a return air temperature sensor 11.2; the output ends of the fresh air temperature sensor 11.1 and the return air temperature sensor 11.2 are connected with the input end of the first control module 1, and the output end of the first control module 1 is connected with the input end of the air-conditioning execution module 2;
first control module 1 receives the temperature signal that fresh air temperature sensor 11.1 and return air temperature sensor 11.2 sent, and right temperature signal handles (the processing procedure here is prior art, and this application is no longer repeated), and to extremely air conditioner execution module 2 sends the instruction, controls air conditioner execution module 2 acts and carries out temperature regulation.
Further, the control box also comprises a second control module 7 arranged in the control box body, wherein the second control module 7 is communicated with the first control module 1 through an RS485Modbus protocol and performs data interaction;
the second control module 7 comprises an electronic expansion valve controller 8, a refrigerant pressure sensor 9 for acquiring outlet pressure of a condenser pipeline and a refrigerant temperature sensor 10 for acquiring outlet temperature of the condenser pipeline, wherein the electronic expansion valve controller 8 receives CO in the condenser pipeline sent by the refrigerant pressure sensor 9 and the refrigerant temperature sensor 10 respectively2Refrigerant pressure and CO2The temperature of the refrigerant.
The fresh air temperature sensor 11.1 and the return air temperature sensor 11.2 respectively collect the temperature inside and outside the vehicle and the return air temperature and transmit the temperature information to the first control module, the target temperature in the vehicle is calculated according to the UIC553 temperature curve, the working mode of the air conditioning unit is controlled according to the temperature difference between the target temperature and the return air temperature, and when the target temperature is higher than the return air temperature by 2 ℃, CO is generated2The refrigerant air conditioner enters a refrigeration mode, and at the moment, the first control module 1 controls the operation of a condensing fan 4; when the target temperature is 2 ℃ lower than the return air temperature, CO2The refrigerant air conditioner enters a heating mode, and the first control module 1 controls the electric heater 6 to operate; when the target temperature and the return air temperature are inIn + -2 deg.C, CO2The refrigerant air conditioner keeps a ventilation mode, and the first control module 1 controls the ventilator 3 to operate; in practical application, the first control module 1 adopts 24V direct current as a power supply, and after the power supply is started, the control system operates normally.
When the temperature in the vehicle collected by the temperature collecting module 11 is higher than the target temperature set in the first control module 1 by 2 ℃, the electronic expansion valve controller 7.8 receives CO at the outlet of the condenser pipeline respectively collected by the refrigerant pressure sensor 9 and the refrigerant temperature sensor 102Refrigerant pressure and temperature, when operating in the cooling mode, through the formula P ═ K × T + B, where P is CO in the electronic expansion valve controller 7.82Setting the pressure value at the outlet of the condenser pipeline, K being a coefficient, T being the temperature at the outlet of the condenser pipeline, B being a constant, (the derivation process of the formula is that the air conditioner is put into a performance laboratory, the air volume is set according to the technical requirements of the air conditioner, then the outdoor environment temperature is adjusted, the frequency of the compressor and the opening degree of the electronic expansion valve are adjusted at the temperature points as many as possible under different environment temperatures, the air conditioner reaches the value of the rated refrigerating capacity, such as 6kW refrigerating capacity, the outlet temperature and the outlet pressure of the condenser at the moment are recorded, a linear curve with the points as many as possible is formed according to the data of the groups, so as to obtain the coefficient K and the coefficient B of the curve, then the coefficient is programmed into the regulating program of the electronic expansion valve), the values of the coefficient K and the coefficient B are set in the program in the first control module according to the matching requirements of the system, the pressure of the condenser export of application setting value and collection compares and combines PID control to carry out the regulation of electronic expansion valve, and when the pipeline pressure that refrigerant pressure sensor 9 gathered was great than the preset pressure value in the electronic expansion valve controller, electronic expansion valve controller control electronic expansion valve was opened entirely, and electronic expansion valve controller control electronic expansion valve closes little aperture when pressure reduces to realize the cold volume output of refrigeration mode and adjust (the regulation mode of this part is prior art, and this application is no longer repeated). The electronic expansion valve adopts a stepping motor with 50 steps per second to meet the requirement of the air conditioner on the opening degree, and the controller of the electronic expansion valve and the first control module adopt an RS485Modbus protocol for communicationAnd realizing data interaction.
Further, as shown in fig. 2, the air conditioner execution module 2 further includes: a frequency converter 13; the frequency converter 13 receives the instruction sent by the first control module 1 and controls the ventilator 3, the condensing fan 4, the compressor 5 and the heater 6 to act.
When the heating mode is operated, the first control module 1 controls the operation of the ventilator 3 and the electric heater 6, and ensures the normal operation of the heating mode. When the temperature in the vehicle is close to the target temperature set in the first control module 1, the first control module 1 only controls the operation of the ventilator, and the normal operation of the ventilation mode is ensured.
In the ventilation mode, only the ventilator works continuously, and other equipment does not act;
in the refrigeration mode, firstly starting the ventilation fan, delaying for 5 seconds, starting the condensation fan, delaying for 10 seconds, starting the compressor and controlling the compressor to operate by outputting corresponding frequency by the frequency converter 13 according to the requirement of temperature difference;
under the heating mode, firstly starting the ventilation fan, delaying for 10 seconds, and starting the electric heating;
in the three modes, the action sequence of the components has strict requirements, and if the failure of the former-stage equipment does not act, the latter-stage equipment cannot be started, so that the strict logic requirements are met, and the danger brought to the system is avoided.
The first control module 1 carries out pressure protection on the system according to the outlet pressure value of the condenser pipeline acquired by the electronic expansion valve controller 8, and when the pressure value is close to the set alarm pressure, the first control module 1 controls the frequency converter 13 to reduce the running frequency of the compressor 5 so as to avoid high-pressure alarm; the frequency converter 13 adopts a multi-speed given control mode, can work at different frequencies such as 60Hz, 70Hz, 80Hz, 90Hz and the like to realize the output of different refrigerating capacities, overcomes the defect of great temperature fluctuation during temperature regulation, enables the temperature control to be more stable, enables the temperature control precision to be within +/-0.5 ℃, and achieves the effects of energy conservation and emission reduction.
Furthermore, the intelligent control system also comprises a touch screen, wherein the touch screen is arranged in the cab and is connected with the first control module 1 in an Ethernet communication mode, the touch screen can replace an air conditioner operation panel, command input buttons are configured in the touch screen, and meanwhile, the H touch screen can integrate functions of alarming, fault recording and the like, so that the function integration is more complete, and convenience is provided for after-sale service. So that the driver can inquire and control the data; the touch screen can display information such as the current real-time temperature in the vehicle, the target set temperature, the working mode and the fault record, and the visualization of the air conditioner operation is realized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. CO for locomotive2Refrigerant air conditioner control system, its characterized in that includes: the air conditioner comprises a control box body, a first control module (1), an air conditioner execution module (2) and a temperature acquisition module (11), wherein the first control module, the air conditioner execution module and the temperature acquisition module are arranged in the control box body; the output end of the temperature acquisition module (11) is connected with the input end of the first control module (1), and the output end of the first control module (1) is connected with the input end of the air conditioner execution module (2);
the temperature acquisition module (11) acquires an in-locomotive temperature signal and sends the in-locomotive temperature signal to the first control module (1);
the first control module (1) receives the temperature signal sent by the temperature acquisition module (11), processes the temperature signal, sends an instruction to the air conditioner execution module (2), and controls the air conditioner execution module (2) to act to adjust the temperature.
2. The system of claim 1, wherein the control box body is disposed at an upper portion of a return air inlet of the air conditioning unit.
3. The system according to claim 1, characterized in that the air-conditioning execution module (2) comprises: the device comprises a ventilator (3), a condensing fan (4), a compressor (5) and a heater (6); the first control module (1) respectively controls the ventilator (3), the condensing fan (4), the compressor (5) and the heater (6) to act.
4. The system according to claim 1, characterized in that the temperature acquisition module (11) comprises a fresh air temperature sensor (11.1) for acquiring the temperature inside and outside the vehicle and a return air temperature sensor (11.2) for acquiring the temperature of the return air inside the vehicle.
5. The system of claim 3, further comprising a second control module (7) disposed within the control box body, the second control module (7) communicatively coupled with the first control module (1);
the second control module (7) comprises: the electronic expansion valve controller (7.8), the refrigerant pressure sensor (7.9) and the refrigerant temperature sensor (7.10), wherein the electronic expansion valve controller (8) receives CO in a condensation pipeline sent by the refrigerant pressure sensor (9) and the refrigerant temperature sensor (10) respectively2Refrigerant pressure and CO2The temperature of the refrigerant and the opening degree of the electronic expansion valve are adjusted.
6. The system according to claim 5, characterized in that the air-conditioning execution module (2) further comprises: a frequency converter (13); and the frequency converter (13) receives the instruction sent by the first control module (1) and controls the compressor (5) to act.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020434349.7U CN212605128U (en) | 2020-03-30 | 2020-03-30 | CO2 refrigerant air conditioner control system for locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020434349.7U CN212605128U (en) | 2020-03-30 | 2020-03-30 | CO2 refrigerant air conditioner control system for locomotive |
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| Publication Number | Publication Date |
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| CN212605128U true CN212605128U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020434349.7U Active CN212605128U (en) | 2020-03-30 | 2020-03-30 | CO2 refrigerant air conditioner control system for locomotive |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111319645A (en) * | 2020-03-30 | 2020-06-23 | 中车大连机车研究所有限公司 | CO for locomotive2Refrigerant air conditioner control system |
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2020
- 2020-03-30 CN CN202020434349.7U patent/CN212605128U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111319645A (en) * | 2020-03-30 | 2020-06-23 | 中车大连机车研究所有限公司 | CO for locomotive2Refrigerant air conditioner control system |
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