CN212709394U - Air conditioner ventilation control system for rail transit - Google Patents
Air conditioner ventilation control system for rail transit Download PDFInfo
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- CN212709394U CN212709394U CN202021251910.4U CN202021251910U CN212709394U CN 212709394 U CN212709394 U CN 212709394U CN 202021251910 U CN202021251910 U CN 202021251910U CN 212709394 U CN212709394 U CN 212709394U
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Abstract
The utility model discloses a track traffic air conditioner ventilation control system, include: a normal vent circuit breaker comprising a normal vent circuit breaker main contact and a normal vent circuit breaker auxiliary contact; a normal ventilation contactor comprising a normal ventilation contactor coil and a normal ventilation contactor main contact; an emergency vent contactor comprising an emergency vent contactor coil and an emergency vent contactor main contact; an inverter feedback contact; a controller solid state relay; a controller mechanical relay; a fan heater protector; a fan. The ventilation system of the air conditioning system is safer and more reliable.
Description
Technical Field
The utility model relates to a track traffic ventilation system field, specific is a track traffic air conditioner ventilation control system.
Background
At present, a ventilation control scheme of an air conditioning system of a rail transit vehicle, namely an air conditioning controller outputs a digital quantity signal to a normal ventilation contactor or an emergency ventilation contactor according to actual working condition requirements, respective normally closed auxiliary contacts of the normal ventilation contactor and the emergency ventilation contactor are connected in series into a contactor control loop of the other side for interlocking, and because the current contactors of large brands are all non-sealed, the auxiliary contacts are easy to cause that the working state of the contactors cannot be truly reflected due to dust entering or contact oxidation, a main loop power supply and an inverter power supply are easy to be in short circuit at the moment, and certain potential safety hazards exist.
At present, in the ventilation control scheme of the air conditioning system of the rail transit vehicle, a feedback signal of an inverter is directly transmitted to a controller, the feedback signal does not directly participate in the direct control of an emergency ventilation mode blower, and when a port of the controller receiving the feedback signal is abnormal, the controller cannot accurately identify the tooling state of the inverter, so that certain potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect among the prior art, the embodiment of the utility model provides a track traffic air conditioner ventilation control system, it makes air conditioning system ventilation system safe and reliable more.
In order to achieve the above object, an embodiment of the present application discloses a rail transit air conditioner ventilation control system, including:
a normal vent circuit breaker comprising a normal vent circuit breaker main contact and a normal vent circuit breaker auxiliary contact;
a normal ventilation contactor comprising a normal ventilation contactor coil and a normal ventilation contactor main contact;
an emergency vent contactor comprising an emergency vent contactor coil and an emergency vent contactor main contact;
an inverter feedback contact;
a controller solid state relay;
a controller mechanical relay;
a fan heater protector;
a fan.
Preferably, the ventilation control system of the rail transit air conditioner further comprises a three-phase alternating-current power supply main loop, wherein the three-phase alternating-current power supply main loop is provided with a main contact of the normal ventilation contactor and a main contact of the normal ventilation circuit breaker, and the main contact of the normal ventilation circuit breaker, the main contact of the normal ventilation contactor and the fan are sequentially connected in series.
Preferably, the ventilation control system of the rail transit air conditioner further comprises an inverter power supply main loop, wherein an emergency ventilation contactor main contact is arranged on the inverter power supply main loop, and the emergency ventilation contactor main contact is connected with the fan in series.
Preferably, the ventilation control system of the rail transit air conditioner further comprises a direct current control loop, and the direct current control loop is provided with the controller solid state relay, the controller mechanical relay, the emergency ventilation contactor coil, the normal ventilation contactor coil, the fan thermal protector, the inverter feedback contact and the normal ventilation circuit breaker auxiliary contact.
Preferably, the fan thermal protector, the controller solid-state relay and the controller mechanical relay are sequentially connected in series.
Preferably, the normally closed contact of the controller mechanical relay is connected in series with the auxiliary contact of the normal ventilation circuit breaker, and is used for controlling the coil of the normal ventilation contactor.
Preferably, the normally open contact of the controller mechanical relay and the inverter feedback contact are connected in series and used for controlling the emergency ventilation contactor coil.
The utility model has the advantages as follows: the interlocking of the contactors is unreliable by using the mode that a controller mechanical relay and a controller solid-state relay are matched in the controller, and the problem of unreliable emergency ventilation control is solved by transmitting an inverter feedback contact into a direct-current control loop.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 is a schematic diagram of a dc control loop of a ventilation control system of a rail transit air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a three-phase ac power supply main loop and an inverter power supply main loop of a ventilation control system of a rail transit air conditioner in an embodiment of the present invention;
reference numerals of the above figures:
1. a controller solid state relay;
2. a controller mechanical relay;
3. an emergency ventilation contactor coil;
4. a normal ventilation contactor coil;
5. a main contact of the emergency ventilation contactor;
6. a normal ventilation contactor main contact;
7. a normal ventilation circuit breaker main contact;
8. a fan heater protector;
9. an inverter feedback contact;
10. a normal ventilation circuit breaker auxiliary contact;
11. a fan;
12. a three-phase AC power supply main loop;
13. the inverter supplies power to the main circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
In order to achieve the above object, the utility model provides a track traffic air conditioner ventilation control system, include:
a normal vent circuit breaker comprising a normal vent circuit breaker main contact 7 and a normal vent circuit breaker auxiliary contact 10;
a normal ventilation contactor comprising a normal ventilation contactor coil 4 and a normal ventilation contactor main contact 6;
an emergency ventilation contactor comprising an emergency ventilation contactor coil 3 and an emergency ventilation contactor main contact 5;
inverter feedback contacts 9;
a controller solid state relay 1;
a controller mechanical relay 2;
a fan heater protector 8;
a fan 11.
Further, the rail transit air conditioner ventilation control system further comprises a three-phase alternating current power supply main loop, wherein the three-phase alternating current power supply main loop is provided with a normal ventilation contactor main contact 6 and a normal ventilation circuit breaker main contact 7, and the normal ventilation circuit breaker main contact 7, the normal ventilation contactor main contact 6 and the fan 11 are sequentially connected in series.
Further, the rail transit air conditioner ventilation control system further comprises an inverter power supply main loop, an emergency ventilation contactor main contact 5 is arranged on the inverter power supply main loop, and the emergency ventilation contactor main contact 5 is connected with the fan 11 in series.
Further, the track traffic air conditioner ventilation control system further comprises a direct current control loop, and the direct current control loop is provided with the controller solid state relay 1, the controller mechanical relay 2, the emergency ventilation contactor coil 3, the normal ventilation contactor coil 4, the fan thermal protector 8, the inverter feedback contact 9 and the normal ventilation circuit breaker auxiliary contact 10.
Further, the fan thermal protector 8, the controller solid-state relay 1 and the controller mechanical relay 2 are sequentially connected in series.
Further, the normally closed contact of the controller mechanical relay 2 is connected in series with the normal ventilation circuit breaker auxiliary contact 10, and is used for controlling the normal ventilation contactor coil 4.
Further, the normally open contact of the controller mechanical relay 2 is connected in series with the inverter feedback contact 9, and is used for controlling the emergency ventilation contactor coil 3.
The design can avoid the problem of unreal feedback caused by dust or oxidation of the auxiliary contact of the contactor. When the inverter monitors that the loop is abnormal, the inverter feedback contact 9 can be directly disconnected, so that the main contact 5 of the emergency ventilation contactor is disconnected.
In this embodiment, referring to fig. 1, the controller calculates the required operating mode according to the actual operating condition, and first outputs a command to the controller mechanical relay 2.
When needs normal ventilation, controller mechanical relay 2 is in the state of can not getting electric, this moment controller mechanical relay's normally closed contact switches on, controller mechanical relay's normally open contact disconnection, time delay 3s back, controller output order is given controller solid state relay 1, controller solid state relay 1 gets the electricity and switches on, and the actuation of normal ventilation contactor 4, normal ventilation contactor main contact 6 switches on, and fan 11 gets the electricity from three-phase main power 12 and carries out normal ventilation.
When needs emergency ventilation, controller mechanical relay 2 is in the state of being able to get electricity, this moment controller mechanical relay's normally closed contact disconnection, controller mechanical relay's normally open contact switches on, and 3s back delays, controller output order is given controller solid state relay 1 action, controller solid state relay 1 gets the electricity and switches on, and 3 actuation of emergency ventilation contactor, emergency ventilation contactor main contact 5 switch on, and fan 11 gets the electricity from dc-to-ac converter 13 and carries out emergency ventilation.
The circuit of the track traffic air conditioning ventilation control system is divided into a three-phase alternating current power supply main loop, an inverter power supply main loop and a direct current control loop, a control mode of weak current to control strong current is used, and when a normal ventilation contactor coil 4 or an emergency ventilation contactor coil 3 is electrified, a corresponding normal ventilation contactor main contact 6 or an emergency ventilation contactor main contact 5 is attracted immediately.
Further, since the normally open contact and the normally closed contact of the controller mechanical relay 2 are not simultaneously conducted, the interlocking of the emergency ventilation contactor coil 3 and the normal ventilation contactor coil 4 is realized.
Further, when the inverter monitors that the loop is abnormal and the inverter feedback contact 9 is disconnected, the coil 3 of the emergency ventilation contactor loses power, and the fan 11 cuts off power supply in emergency ventilation.
Further, when the normal ventilation circuit breaker monitors that the circuit is abnormal and the auxiliary contact 10 of the normal ventilation circuit breaker is disconnected, the coil 4 of the normal ventilation contactor loses power, and the fan 11 is normally ventilated and disconnected for power supply.
Further, when the fan thermal protector 8 is disconnected due to overtemperature, the emergency ventilation contactor coil 3 and the normal ventilation contactor coil 4 are powered off, and the fan 11 is powered off.
In conclusion, the invention solves the unreliable problem of contactor interlocking by using the controller mechanical relay 2 in the controller to be matched with the controller solid-state relay 1, and solves the unreliable problem of emergency ventilation control by introducing the inverter feedback contact 9 of the inverter into a direct current control loop.
The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (7)
1. A rail transit air conditioner ventilation control system characterized by comprising:
a normal vent circuit breaker comprising a normal vent circuit breaker main contact and a normal vent circuit breaker auxiliary contact;
a normal ventilation contactor comprising a normal ventilation contactor coil and a normal ventilation contactor main contact;
an emergency vent contactor comprising an emergency vent contactor coil and an emergency vent contactor main contact;
an inverter feedback contact;
a controller solid state relay;
a controller mechanical relay;
a fan heater protector;
a fan.
2. The track traffic air-conditioning ventilation control system according to claim 1, further comprising a three-phase ac power supply main loop, wherein the three-phase ac power supply main loop is provided with the normal ventilation contactor main contact and the normal ventilation circuit breaker main contact, the normal ventilation contactor main contact and the fan are connected in series in sequence.
3. The track traffic air conditioning ventilation control system of claim 1, further comprising an inverter power supply main loop, wherein an emergency ventilation contactor main contact is arranged on the inverter power supply main loop, and the emergency ventilation contactor main contact is arranged in series with the fan.
4. The track traffic air conditioning ventilation control system of claim 1, further comprising a dc control loop on which are disposed the controller solid state relay, the controller mechanical relay, the emergency ventilation contactor coil, the normal ventilation contactor coil, a fan thermal protector, the inverter feedback contacts, and the normal ventilation circuit breaker auxiliary contacts.
5. The rail transit air conditioning ventilation control system of claim 4, wherein the fan thermal protector, the controller solid state relay and the controller mechanical relay are connected in series in sequence.
6. The rail transit air conditioning ventilation control system of claim 4, wherein the normally closed contact of the controller mechanical relay and the normal ventilation circuit breaker auxiliary contact are connected in series for controlling the normal ventilation contactor coil.
7. The rail transit air conditioning ventilation control system of claim 4, wherein the normally open contacts of the controller mechanical relay and the inverter feedback contacts are in series for said controlling the emergency ventilation contactor coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021251910.4U CN212709394U (en) | 2020-06-30 | 2020-06-30 | Air conditioner ventilation control system for rail transit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021251910.4U CN212709394U (en) | 2020-06-30 | 2020-06-30 | Air conditioner ventilation control system for rail transit |
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| Publication Number | Publication Date |
|---|---|
| CN212709394U true CN212709394U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021251910.4U Active CN212709394U (en) | 2020-06-30 | 2020-06-30 | Air conditioner ventilation control system for rail transit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548074A (en) * | 2021-07-27 | 2021-10-26 | 重庆中车长客轨道车辆有限公司 | Fault monitoring system for double-flow system vehicle air tightness control |
-
2020
- 2020-06-30 CN CN202021251910.4U patent/CN212709394U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548074A (en) * | 2021-07-27 | 2021-10-26 | 重庆中车长客轨道车辆有限公司 | Fault monitoring system for double-flow system vehicle air tightness control |
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