CN112172855A - Control method of fresh air valve in air conditioning unit of cab of railway vehicle - Google Patents
Control method of fresh air valve in air conditioning unit of cab of railway vehicle Download PDFInfo
- Publication number
- CN112172855A CN112172855A CN202011185255.1A CN202011185255A CN112172855A CN 112172855 A CN112172855 A CN 112172855A CN 202011185255 A CN202011185255 A CN 202011185255A CN 112172855 A CN112172855 A CN 112172855A
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- air valve
- fresh air
- controlling
- opening
- equal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/009—Means for ventilating only
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
- B61C17/04—Arrangement or disposition of driving cabins, footplates or engine rooms; Ventilation thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Transportation (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a control method of a fresh air valve in an air conditioning unit of a cab of a railway vehicle, belonging to the technical field of air conditioning systems of railway vehicles, and comprising the following steps: step A, a controller of the air conditioning unit judges the state of the train speed according to a train speed signal sent by a train network, if the train speed is in an ascending process, step B is executed, and if the train speed is in a descending process, step C is executed; b, adjusting the opening of the fresh air valve according to different vehicle speeds and carbon dioxide concentrations; and C, adjusting the opening of the fresh air valve according to different vehicle speeds and carbon dioxide concentrations. The invention collects the speed signal and CO transmitted by the train network2Concentration, increase the adjusting gear for the blast gate, improve the comfort of the environment in the cab and increase CO2And the safety of personnel is improved by detection.
Description
Technical Field
The invention belongs to the technical field of air conditioning systems of rail vehicles, and particularly relates to a control method of a fresh air valve in an air conditioning unit of a cab of a rail vehicle.
Background
At present, a driver cab air conditioning system for a rail transit vehicle is influenced by the space and the cost of the driver cab, and a common fresh air valve only has a switch gear and has no adjusting function.
With the rapid development of railway trains, in the process of gradually increasing the speed of the train, only the comfort of the air conditioner in the passenger room to passengers is usually concerned, and the comfort of the air conditioner in the driver room to drivers is neglected.
Disclosure of Invention
The invention aims to solve the technical problem of providing a control method of a fresh air valve in an air conditioning unit of a cab of a railway vehicle, which is implemented by collecting a vehicle speed signal and CO transmitted by a train network2Concentration, considering that the comfort of a driver is reduced by pressure change when the vehicle speed is increased or decreased, balancing the internal and external pressures of the vehicle by adjusting the opening degree of an air valve, and considering CO2The concentration of CO affects the safety of the personnel2When the concentration is higher, the opening of the fresh air valve is increased, and the fresh air quantity is increased, so that the comfort of the environment in the cab is ensured.
In order to solve the technical problems, the invention adopts the technical scheme that: a control method of a fresh air valve in an air conditioning unit of a cab of a railway vehicle is based on a vehicle speed signal sent by a train network and a sensor for detecting the concentration of carbon dioxide in the cab, and comprises the following steps:
step A, a controller of the air conditioning unit judges the state of the train speed according to a train speed signal sent by a train network, if the train speed is in an ascending process, step B is executed, and if the train speed is in a descending process, step C is executed;
step B, (1), when the controller receives the vehicle speed V <80km/h sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 35% -40%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 55-60%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(2) when the controller receives the vehicle speed V which is more than or equal to 80km/h and less than or equal to 120km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 55-60%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 75-80%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(3) when the controller receives the vehicle speed V which is transmitted by the network and is more than 120km/h, the opening degree of the fresh air valve is controlled to be 100 percent;
step C, (1), when the controller receives the vehicle speed V which is more than or equal to 60 km/h and less than or equal to 100 km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 55-60%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 75-80%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(2) when the vehicle speed which is sent by the network and received by the controller drops to the range V <60 km/h,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 35% -40%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 55-60%;
c. if Q is more than 2600ppm, controlling the opening degree of the fresh air valve to be 100 percent;
wherein Q is CO2And (4) concentration.
The invention has the beneficial effects that: by collecting speed signal and CO transmitted by train network2Concentration, increase the adjusting gear for the blast gate, improve the comfort of the environment in the cab and increase CO2And the safety of personnel is improved by detection.
Detailed Description
The invention provides a control method of a fresh air valve in an air conditioning unit of a cab of a railway vehicle, which is based on a vehicle speed signal sent by a train network and a sensor for detecting the concentration of carbon dioxide in the cab.
And step A, the air conditioning unit controller judges the state of the train speed according to a train speed signal sent by the train network, if the train speed is in an ascending process, the step B is executed, and if the train speed is in a descending process, the step C is executed. In the step A, the train network of every other three-clock controller obtains the speed signal and executes the step B or the step C according to the speed signal.
When the controller detects that the train network is lost, the controller controls the fresh air valve to keep the opening degree of the last control for three minutes, and after the three minutes, if the train network still fails, the opening angle of the fresh air valve executes the following control: when the ventilator runs at a high speed, the opening degree is 100%; when the air conditioner runs at a medium speed, the opening degree of a fresh air valve is controlled to be 75-80%; and when the air conditioner runs at a low speed, the opening degree of the fresh air valve is controlled to be 35-40%.
Step B,
(1) When the controller receives the vehicle speed V <80km/h sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 35% -40%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 55-60%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(2) when the controller receives the vehicle speed V which is more than or equal to 80km/h and less than or equal to 120km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 55-60%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 75-80%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(3) and when the controller receives the vehicle speed V which is transmitted by the network and is greater than 120km/h, controlling the opening degree of the fresh air valve to be 100 percent.
Step C,
(1) When the controller receives the vehicle speed V which is not less than 60 km/h and not more than 100 km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 55-60%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 75-80%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(2) when the vehicle speed which is sent by the network and received by the controller drops to the range V <60 km/h,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 35% -40%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 55-60%;
c. if Q is more than 2600ppm, controlling the opening degree of the fresh air valve to be 100 percent;
wherein Q is CO2And (4) concentration. In the above opening range of the fresh air valve, if the opening is too small, the fresh air volume is small, which is not favorable for CO2The reduction of concentration, if the aperture is too big then when the indoor outer temperature difference is great, can lead to the unit energy consumption to increase.
The present invention will be described in detail with reference to specific examples.
And step A, the air conditioning unit controller judges the state of the train speed according to a train speed signal sent by the train network, if the train speed is in an ascending process, the step B is executed, and if the train speed is in a descending process, the step C is executed.
In the step, the train network of the controller is controlled to obtain the speed signals every other three minutes and the step B or the step C is executed according to the speed signals.
When the controller detects that the train network is lost, the controller controls the fresh air valve to keep the opening degree of the last control for three minutes, and after the three minutes, if the train network still fails, the opening angle of the fresh air valve executes the following control:
when the ventilator is running at high speed, the opening time is 35S (opening 100%); when the air conditioner runs at a medium speed, the opening time of a fresh air valve is controlled to be 28S (the opening degree is 80%); when the vehicle is operated at a low speed, the opening time is 15S (opening 40%).
Step B,
(1) When the controller receives the vehicle speed V <80km/h sent by the network,
a. if Q is less than 1600ppm, controlling the opening time of the fresh air valve to be 15S (opening degree of 40%);
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening time of the fresh air valve to be 20S (opening degree of 60%);
c. if Q is more than 2600ppm, controlling the opening time of the fresh air valve to be 35S (opening degree of 100%);
(2) when the controller receives the vehicle speed V which is more than or equal to 80km/h and less than or equal to 120km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening time of the fresh air valve to be 20S (opening degree of 60%);
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening time of the fresh air valve to be 28S (opening degree 80%);
c. if Q is more than 2600ppm, controlling the opening time of the fresh air valve to be 35S (opening degree of 100%);
(3) when the controller receives the vehicle speed V which is transmitted by the network and is greater than 120km/h, controlling the opening time of the fresh air valve to be 35S (the opening degree is 100%);
step C,
(1) When the controller receives the vehicle speed V which is not less than 60 km/h and not more than 100 km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening time of the fresh air valve to be 20S (opening degree of 60%);
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening time of the fresh air valve to be 28S (opening degree 80%);
c. if Q is more than 2600ppm, controlling the opening time of the fresh air valve to keep 35S (opening 100%);
(2) when the vehicle speed which is sent by the network and received by the controller drops to the range V <60 km/h,
a. if Q is less than 1600ppm, controlling the opening time of the fresh air valve to be 15S (opening degree of 40%);
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening time of the fresh air valve to be 20S (opening degree of 60%);
c. if Q is more than 2600ppm, controlling the opening time of the fresh air valve to be 35S (opening degree of 100%);
wherein Q is CO2And (4) concentration.
In the scheme, the air valve is a common switch value (digital signal) air valve for the railway, the full-opening or full-closing time is 35S, the air valve is opened slowly by a certain opening degree after an air valve opening command is sent from a controller, and the opening degree of the air valve is 100% after 35S. In practice, there are also voltage-type (analog signal) dampers on railroads, which are slowly opened by the adjustment of the supply voltage. When the air valve is applied to a project, the air valve is flexibly applied according to the type selection of the air valve.
This scheme also is applicable to the guest room air conditioner of not installing pressure wave controlling means simultaneously.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (3)
1. A control method of a fresh air valve in an air conditioning unit of a cab of a railway vehicle is based on a vehicle speed signal sent by a train network and a sensor for detecting the concentration of carbon dioxide in the cab, and is characterized by comprising the following steps:
step A, a controller of the air conditioning unit judges the state of the train speed according to a train speed signal sent by a train network, if the train speed is in an ascending process, step B is executed, and if the train speed is in a descending process, step C is executed;
step B,
(1) When the controller receives the vehicle speed V <80km/h sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 35% -40%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 55-60%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(2) when the controller receives the vehicle speed V which is more than or equal to 80km/h and less than or equal to 120km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 55-60%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 75-80%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(3) when the controller receives the vehicle speed V which is transmitted by the network and is more than 120km/h, the opening degree of the fresh air valve is controlled to be 100 percent;
step C,
(1) When the controller receives the vehicle speed V which is not less than 60 km/h and not more than 100 km/h and is sent by the network,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 55-60%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 75-80%;
c. if Q is more than 2600ppm, controlling the opening of the fresh air valve to be 100 percent;
(2) when the vehicle speed which is sent by the network and received by the controller drops to the range V <60 km/h,
a. if Q is less than 1600ppm, controlling the opening degree of the fresh air valve to be 35% -40%;
b. if Q is more than or equal to 1600ppm and less than or equal to 2600ppm, controlling the opening of the fresh air valve to be 55-60%;
c. if Q is more than 2600ppm, controlling the opening degree of the fresh air valve to be 100 percent;
wherein Q is CO2And (4) concentration.
2. The method of claim 1, wherein step a includes obtaining vehicle speed signals at intervals of the three-clock controller train network and performing step B or step C based on the vehicle speed signals.
3. The method for controlling the fresh air valve in the air conditioning unit of the cab of the railway vehicle as claimed in claim 1 or 2, wherein when the controller in the step a detects that the train network is lost, the fresh air valve is controlled to keep the opening degree of the last control for three minutes, and after three minutes, if the train network still fails, the opening angle of the fresh air valve is controlled as follows:
when the ventilator runs at a high speed, the opening degree is 100%; when the air conditioner runs at a medium speed, the opening degree of a fresh air valve is controlled to be 75-80%; and when the air conditioner runs at a low speed, the opening degree of the fresh air valve is controlled to be 35-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011185255.1A CN112172855B (en) | 2020-10-30 | 2020-10-30 | Control method of fresh air valve in air conditioning unit of cab of railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011185255.1A CN112172855B (en) | 2020-10-30 | 2020-10-30 | Control method of fresh air valve in air conditioning unit of cab of railway vehicle |
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| Publication Number | Publication Date |
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| CN112172855A true CN112172855A (en) | 2021-01-05 |
| CN112172855B CN112172855B (en) | 2021-10-22 |
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| CN202011185255.1A Active CN112172855B (en) | 2020-10-30 | 2020-10-30 | Control method of fresh air valve in air conditioning unit of cab of railway vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115045852A (en) * | 2021-03-09 | 2022-09-13 | 山东朗进科技股份有限公司 | Control method and control system for air conditioner air valve of railway vehicle |
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Cited By (1)
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| CN115045852A (en) * | 2021-03-09 | 2022-09-13 | 山东朗进科技股份有限公司 | Control method and control system for air conditioner air valve of railway vehicle |
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| CN112172855B (en) | 2021-10-22 |
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