CN105491691B - A kind of automatic temperature-control electric heating belt current control method - Google Patents
A kind of automatic temperature-control electric heating belt current control method Download PDFInfo
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- CN105491691B CN105491691B CN201610031967.5A CN201610031967A CN105491691B CN 105491691 B CN105491691 B CN 105491691B CN 201610031967 A CN201610031967 A CN 201610031967A CN 105491691 B CN105491691 B CN 105491691B
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- electric heating
- heating belt
- control electric
- automatic temperature
- temperature
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B1/00—Details of electric heating devices
- H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
- H05B1/0227—Applications
- H05B1/023—Industrial applications
- H05B1/0236—Industrial applications for vehicles
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- Control Of Resistance Heating (AREA)
Abstract
The invention discloses a kind of automatic temperature-control electric heating belt current control methods, are including step：Control circuit connection adjusts initial input voltage U0, increase process input voltage and automatic temperature-control electric heating belt total head work.Initial input voltage U after automatic temperature-control electric heating belt, which inputs, to be adjusted0When, the starting current of automatic temperature-control electric heating belt and the ratio of steady-state current are 1.05 ~ 1.15.After the above method, the ratio of starting current and steady-state current can be limited in 1.05 ~ 1.15 according to the resistance-temperature characteristic of automatic temperature-control electric heating belt, varying environment temperature can be taken into account.Meanwhile miniature circuit breaker is easy to type selecting, improves the safety and reliability of vehicle.In addition, for longer automatic temperature-control electric heating belt, practicality need not be also segmented, service life is long.
Description
Technical field
The present invention relates to rail traffic vehicles field, particularly a kind of automatic temperature-control electric heating belt current control method.
Background technology
At present, the door and pipeline of passenger train, widely used automatic temperature-control electric heating belt progress cold-proof heat insulation, and usually
Using the control method of miniature circuit breaker+automatic temperature-control electric heating belt.
However, the starting current of automatic temperature-control electric heating belt is affected by temperature greatly, as shown in Figure 1, the figure illustrates existing skills
In art when certain brand automatic temperature-control electric heating belt is in varying environment temperature, start the relational graph of peak point current and steady-state current
Table.It will be apparent from this figure that starting when automatic temperature-control electric heating belt is at -20 DEG C, it is about steady-state current to start peak point current
9 times；Start when automatic temperature-control electric heating belt is at -40 DEG C, start 15 times that peak point current is about steady-state current.
Therefore, when using the control method of existing miniature circuit breaker+automatic temperature-control electric heating belt, there will be following aspects
Deficiency：
1. miniature circuit breaker can occur accidentally to protect or misaction, cause miniature circuit breaker type selecting difficult
Automatic temperature-control electric heating belt such as is put into when at -40 DEG C, to be made mounted on the miniature disconnected of automatic temperature-control electric heating belt front end
Road device does not trip, and the protective current setting value of miniature circuit breaker will be larger.Can thus deposit at relatively high temperatures, such as 0 DEG C when,
Automatic temperature-control electric heating belt breaks down and the possibility of miniature circuit breaker tripping.
That is, miniature circuit breaker is as pressed higher temperature（Such as 0 DEG C）Type selecting, then in lower temperature（Such as -40 DEG C）When malfunction, can
It is poor by property.Such as press lower temperature（Such as -40 DEG C）Type selecting, then in higher temperature（Such as 0 DEG C）, it is miniature disconnected when electric-heating belt breaks down
Road device tripping, there are security risks.
2. the automatic temperature-control electric heating belt application of long range is limited
When electric-heating belt distance, need to be divided into more parts and controlled by multiple miniature circuit breakers.Such as water tank pipeline companion
The torrid zone about 80m, if using an automatic temperature-control electric heating belt, the startup peak point current at -40 DEG C will be up to 2.95 A/m * 80m
=236A.In order to reduce startup peak point current, the startup peak point current of single automatic temperature-control electric heating belt is limited, is needed single length
Automatic temperature-control electric heating belt is divided into more, is controlled by multiple miniature circuit breakers.As water tank pipeline heating tape about 80m, generally by it
It is divided into 3, while is controlled respectively using 3 miniature circuit breakers.In this case, vehicle wiring will be increased, reliability reduces.
3. in addition, due to automatic temperature-control electric heating belt, to start peak point current larger, will influence automatic temperature-control electric heating belt and vehicle-mounted
DC/AC supply convertor service lifes, and influence miscellaneous equipment normal work.
Invention content
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a kind of temp auto-controlled electric tracings
Method of flow control is charged, which can be according to the resistance v. temperature spy of automatic temperature-control electric heating belt
The ratio of starting current and steady-state current is limited in 1.05 ~ 1.15 by property, can take into account varying environment temperature.It is meanwhile miniature disconnected
Road device is easy to type selecting, improves the safety and reliability of vehicle.In addition, for longer automatic temperature-control electric heating belt, need not also divide
Duan Shiyong, service life are long.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of automatic temperature-control electric heating belt current control method, includes the following steps：
The first step, control circuit connection：It is provided in automatic temperature-control electric heating belt connects circuit and is connected with temperature sensor
Thyristor is connect, by adjusting the phase turn-on angle of thyristor, the input voltage of automatic temperature-control electric heating belt can be adjusted；Temperature sensing
Device is used for monitoring of environmental temperature.
Second step adjusts the initial input voltage U of automatic temperature-control electric heating belt0：It is detected according to temperature sensor in the first step
Ambient temperature value adjust thyristor phase turn-on angle, and then adjust automatic temperature-control electric heating belt initial input voltage U0；When
Automatic temperature-control electric heating belt inputs the initial input voltage U after the adjusting0When, starting current and the stable state electricity of automatic temperature-control electric heating belt
The ratio of stream is 1.05 ~ 1.15, and the phase turn-on angle of thyristor is maximum at this time, is denoted as α0。
Third walks, and increases the process input voltage of automatic temperature-control electric heating belt：According to the resistance v. temperature of automatic temperature-control electric heating belt
Characteristic and time parameter make the phase turn-on angle of thyristor from α0Gradually reduce, and then make the process of automatic temperature-control electric heating belt defeated
Enter voltage from U0It incrementally increases.
4th step, the work of automatic temperature-control electric heating belt total head：The phase turn-on angle of thyristor continues to reduce in third step, when to
Up to after setting time, the process input voltage of automatic temperature-control electric heating belt is made to be equal to rated voltage Ui, automatic temperature-control electric heating belt total head
Stable state works.
The thyristor is bidirectional thyristor.
In 4th step, when reaching setting time, when the phase turn-on angle of thyristor is decreased to 0 ° in third step, from
The process input voltage of temperature control electric-heating belt will be equal to rated voltage Ui.
In third step, thyristor phase turn-on angle is from α0The reduction frequency gradually reduced is to reduce one per 5-10 seconds
Degree.
The present invention has the advantages that using after the above method：
1. the ratio of starting current and steady-state current can be limited according to the resistance-temperature characteristics of automatic temperature-control electric heating belt
1.05 ~ 1.15, varying environment temperature can be taken into account.
2. miniature circuit breaker is easy to type selecting, the safety and reliability of vehicle is improved.
3. in addition, for longer automatic temperature-control electric heating belt, practicality need not be also segmented, service life is long.
4. do not control electric current simple using current sensor.
Description of the drawings
When Fig. 1 shows varying environment temperature in the prior art, the startup peak point current and stable state of automatic temperature-control electric heating belt
The relationship graph of electric current, and " peak/steady " represents to start the ratio of peak point current and steady-state current in the figure.
Fig. 2 shows a kind of automatic temperature-control electric heating belt current control schematic diagram of the present invention.
Specific embodiment
The present invention is described in further detail with specific better embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 2, a kind of automatic temperature-control electric heating belt current control method, includes the following steps：
The first step, control circuit connection：Setting is connected with temperature sensor in automatic temperature-control electric heating belt connects circuit
Thyristor.
The preferably bidirectional thyristor of thyristor, as shown in Figure 2 unidirectional thyristor VT1 parallel with one another and unidirectionally brilliant lock
Pipe VT2.As an alternative, it can also directly be substituted with a bidirectional thyristor.
VT1 and VT2 are connected with driving plate, and driving plate is connected with master board, temperature sensor and master board
It is connected.In addition, in Fig. 2, U represents the input voltage of automatic temperature-control electric heating belt, and R represents the resistance value of automatic temperature-control electric heating belt, I
The current value for flowing through automatic temperature-control electric heating belt is represented, Ui represents the rated voltage of automatic temperature-control electric heating belt.
By adjusting the phase turn-on angle α of thyristor, the input voltage U of automatic temperature-control electric heating belt can be adjusted.It is in addition, warm
Sensor is spent for monitoring of environmental temperature, and environment temperature monitor value is passed into master board.
Second step adjusts the initial input voltage U of automatic temperature-control electric heating belt0。
The phase turn-on angle of thyristor is adjusted according to the ambient temperature value that temperature sensor in the first step detects, and then is adjusted
The initial input voltage U of automatic temperature-control electric heating belt0。
When the environment temperature decreases, when being such as reduced to -40 DEG C, by the thyristor phase turn-on angle of setting, make temp auto-controlled
The initial input voltage U of electric-heating belt0Reduce.
When automatic temperature-control electric heating belt inputs initial input voltage U after this is turned down0When, the startup electricity of automatic temperature-control electric heating belt
The ratio of stream and steady-state current is 1.05 ~ 1.15, and the phase turn-on angle of thyristor is maximum at this time, is denoted as α0。
Environment temperature is different, the maximum phase turn-on angle α of thyristor0Also will be different, when being both needed to ensure temp auto-controlled electric tracing
The starting current of band and the ratio of steady-state current are 1.05 ~ 1.15.Therefore, varying environment temperature can be taken into account.
Third walks, and increases the process input voltage of automatic temperature-control electric heating belt.
According to the resistance-temperature characteristics and time parameter of automatic temperature-control electric heating belt, make the phase turn-on angle of thyristor from α0
Gradually reduce, and then make the process input voltage of automatic temperature-control electric heating belt from U0It incrementally increases.
The resistance of automatic temperature-control electric heating belt is bigger, and temperature is higher.If it is initial defeated to continue input in automatic temperature-control electric heating belt
Enter voltage U0When, the resistance of automatic temperature-control electric heating belt is smaller, and temperature is also low, will be not enough to play heat tracing effect.Therefore, it is necessary to will
The input voltage increase of automatic temperature-control electric heating belt.
Further, thyristor phase turn-on angle is from α0The reduction frequency gradually reduced preferably reduced once per 5-10 seconds.
4th step, the work of automatic temperature-control electric heating belt total head：The phase turn-on angle of thyristor continues to reduce in third step, when to
Up to after setting time, the process input voltage of automatic temperature-control electric heating belt is made to be equal to rated voltage Ui, automatic temperature-control electric heating belt total head
Stable state works.At this point, it is steady-state current to flow through the electric current in automatic temperature-control electric heating belt.
Further, in this step, when reaching setting time, the phase turn-on angle of thyristor is decreased to 0 ° in third step
When, the process input voltage of automatic temperature-control electric heating belt will be equal to rated voltage Ui.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail, within the scope of the technical concept of the present invention, a variety of equivalents can be carried out to technical scheme of the present invention, this
A little equivalents all belong to the scope of protection of the present invention.
Claims (4)
1. a kind of automatic temperature-control electric heating belt current control method, it is characterised in that：Include the following steps：
The first step, control circuit connection：The crystalline substance being connected with temperature sensor is set in automatic temperature-control electric heating belt connects circuit
Brake tube；Wherein, temperature sensor is used for monitoring of environmental temperature；Thyristor is adjusted according to the ambient temperature value that temperature sensor detects
Phase turn-on angle, and then the input voltage of automatic temperature-control electric heating belt can be adjusted；
Second step adjusts the initial input voltage U of automatic temperature-control electric heating belt0：The environment detected according to temperature sensor in the first step
Temperature value adjusts the phase turn-on angle of thyristor, and then adjusts the initial input voltage U of automatic temperature-control electric heating belt0；Work as temp auto-controlled
Electric-heating belt inputs the initial input voltage U after the adjusting0When, the starting current of automatic temperature-control electric heating belt and the ratio of steady-state current
It is 1.05 ~ 1.15 to be worth, and the phase turn-on angle of thyristor is maximum at this time, is denoted as α0；
Third walks, and increases the process input voltage of automatic temperature-control electric heating belt：According to the resistance-temperature characteristics of automatic temperature-control electric heating belt
And time parameter, make the phase turn-on angle of thyristor from α0Gradually reduce, and then the process of automatic temperature-control electric heating belt is made to input electricity
It presses from U0It incrementally increases；
4th step, the work of automatic temperature-control electric heating belt total head：The phase turn-on angle of thyristor continues to reduce in third step, when arrival is set
After fixing time, the process input voltage of automatic temperature-control electric heating belt is made to be equal to rated voltage Ui, automatic temperature-control electric heating belt total head stable state
It works.
2. automatic temperature-control electric heating belt current control method according to claim 1, it is characterised in that：The thyristor is double
To thyristor.
3. automatic temperature-control electric heating belt current control method according to claim 1, it is characterised in that：In 4th step,
When reaching setting time, when the phase turn-on angle of thyristor is decreased to 0 ° in third step, the process of automatic temperature-control electric heating belt is defeated
Rated voltage Ui will be equal to by entering voltage.
4. automatic temperature-control electric heating belt current control method according to claim 1, it is characterised in that：In the third step,
Thyristor phase turn-on angle is from α0The reduction frequency gradually reduced is to reduce once per 5-10 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031967.5A CN105491691B (en) | 2016-01-19 | 2016-01-19 | A kind of automatic temperature-control electric heating belt current control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031967.5A CN105491691B (en) | 2016-01-19 | 2016-01-19 | A kind of automatic temperature-control electric heating belt current control method |
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| CN105491691A CN105491691A (en) | 2016-04-13 |
| CN105491691B true CN105491691B (en) | 2018-06-29 |
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| CN113064014B (en) * | 2021-04-02 | 2023-03-21 | 首钢京唐钢铁联合有限责任公司 | Method, device, equipment and medium for detecting electric tracing band |
| CN117596726B (en) * | 2023-12-22 | 2024-05-10 | 山东绿光热控科技有限公司 | Self-adaptive operation control method for electric tracing band |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616212A (en) * | 1979-07-17 | 1981-02-17 | Sharp Corp | Temperature control unit |
| CN103804778A (en) * | 2012-11-13 | 2014-05-21 | 安邦电气集团有限公司 | Preparation method of automatic temperature control heat tracing band |
| CN204119557U (en) * | 2014-09-24 | 2015-01-21 | 中国石油天然气股份有限公司 | Electric tracing band temperature controller |
| CN204350323U (en) * | 2015-01-16 | 2015-05-20 | 北京科特兴业热控科技有限公司 | The control system of electric-heating belt |
-
2016
- 2016-01-19 CN CN201610031967.5A patent/CN105491691B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616212A (en) * | 1979-07-17 | 1981-02-17 | Sharp Corp | Temperature control unit |
| CN103804778A (en) * | 2012-11-13 | 2014-05-21 | 安邦电气集团有限公司 | Preparation method of automatic temperature control heat tracing band |
| CN204119557U (en) * | 2014-09-24 | 2015-01-21 | 中国石油天然气股份有限公司 | Electric tracing band temperature controller |
| CN204350323U (en) * | 2015-01-16 | 2015-05-20 | 北京科特兴业热控科技有限公司 | The control system of electric-heating belt |
Non-Patent Citations (1)
| Title |
|---|
| "石油管线电伴热系统的恒流电源设计";刘锋;《中国优秀博硕士学位论文全文数据库（硕士）（工程科技辑Ⅰ）》;20150531;论文第2章第2.2节 * |
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| CN105491691A (en) | 2016-04-13 |
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