CN210236436U - A dynamic energy-saving control system for motor frequency of wind feeding system - Google Patents
A dynamic energy-saving control system for motor frequency of wind feeding system Download PDFInfo
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- CN210236436U CN210236436U CN201920943810.9U CN201920943810U CN210236436U CN 210236436 U CN210236436 U CN 210236436U CN 201920943810 U CN201920943810 U CN 201920943810U CN 210236436 U CN210236436 U CN 210236436U
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Abstract
The utility model discloses a wind-force feeding system motor frequency developments energy-saving control system belongs to automatic control and energy-conserving technical field, wind-force feeding system motor frequency developments energy-saving control system include feeding equipment, conveying pipeline, flowmeter, governing valve, return air pipeline, fan, controller, human-machine interface, feeding equipment pass through the conveying pipeline and be connected with the bale winder feed inlet, install the flowmeter on the conveying pipeline, the bale winder export is passed through the governing valve and is connected with the fan, the control end of controller is connected with the converter of fan, the controller input is connected with human-machine interface. The utility model provides a real-time method that realizes fan dust pelletizing system wind-force lean control and motor energy-saving control according to operating mode change dynamic control fan motor operating frequency.
Description
Technical Field
The utility model belongs to the technical field of automatic control and energy-conservation, more specifically the utility model relates to a dynamic energy-saving control system of wind-force feeding system motor frequency that says so.
Background
Usually, a fan provides wind power for a plurality of bale winders, and most of the wind power is dragged by a soft starter and a frequency converter and runs at a fixed frequency. The fan is selected according to the maximum load and considering a certain margin (10%) in the design stage, and in the actual production, the medium-full load ratio is relatively low, so that the condition that a large horse pulls a small car exists; in addition, in actual production, the running stop condition of the production equipment at the front end of the fan is often caused by various reasons, the running frequency of the fan is not adjusted, the wind power of the fan is kept unchanged, the wind is supplemented to a non-material pipeline through a wind supplementing valve, the basic wind power balance of a main pipe is maintained, the wind power in the mode is not suitable for the working condition, and the motor of the fan dust removal system is not controlled in a lean mode.
Disclosure of Invention
The utility model provides a real-time method that realizes fan dust pelletizing system wind-force lean control and motor energy-saving control according to operating mode change dynamic control fan motor operating frequency.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the dynamic energy-saving control system for the motor frequency of the wind power feeding system comprises a feeding device 1, a feeding pipeline 2, a flowmeter 3, an adjusting valve 4, a return air pipeline 5, a fan 6, a controller 7 and a human-computer interface 8, wherein the feeding device 1 is connected with a feeding hole of a bale winder through the feeding pipeline 2, the flowmeter 3 is installed on the feeding pipeline 2, an outlet of the bale winder is connected with the fan 6 through the adjusting valve 4, a control end of the controller 7 is connected with a frequency converter of the fan 6, and the input end of the controller 7 is connected with the human-computer interface 8.
Preferably, the dynamic energy-saving control system for the motor frequency of the wind power feeding system further comprises a dust removal device, and the dust removal device is installed between the fan 6 and the bale winder.
Preferably, the flow meter 3 is a venturi flow meter 3, and each feeding pipeline is provided with a venturi flow meter 3.
The utility model discloses beneficial effect:
the utility model provides a real-time 6 motor operating frequency of dynamic control fan according to operating mode change realizes 6 dust pelletizing system wind-force lean control of fan and motor energy-saving control's method, can the effectual energy consumption of practicing thrift fan 6.
Drawings
FIG. 1 is a diagram of a basic system for lean control of wind speed for a pneumatic wire feeding system according to the present invention;
FIG. 2 is a flow chart of lean control of wind speed for the pneumatic wire feeding system of the present invention.
In the figure, 1-feeding equipment, 2-feeding pipelines, 2, 3-flow meters, 4-regulating valves, 5-return air pipelines, 6-fans, 7-controllers and 8-human-computer interfaces.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples, but the invention is not limited in any way, and any modification or replacement made according to the teaching of the invention falls within the scope of the invention.
As shown in fig. 1-2, the dynamic energy-saving control system for motor frequency of a wind power feeding system comprises a feeding device 1, a feeding pipeline 2, a flowmeter 3, an adjusting valve 4, a return air pipeline 5, a fan 6, a controller 7 and a human-computer interface 8, wherein the feeding device 1 is connected with a feeding hole of a wrapping machine through the feeding pipeline 2, the flowmeter 3 is installed on the feeding pipeline 2, an outlet of the wrapping machine is connected with the fan 6 through the adjusting valve 4, a control end of the controller 7 is connected with a frequency converter of the fan 6, and an input end of the controller 7 is connected with the human-computer interface 8.
Preferably, the dynamic energy-saving control system for the motor frequency of the wind power feeding system further comprises a dust removal device, and the dust removal device is installed between the fan 6 and the bale winder.
Preferably, the flow meter 3 is a venturi flow meter 3, and each feeding pipeline is provided with a venturi flow meter 3.
The wind balance system is formed by a centrifugal ventilator 6 generating negative pressure in the main pipeThe n branch pipes connected to the main pipe convey tobacco shreds to n cigarette making machines, wherein nsThe cigarette making machine is a single wire feeding pipeline, and n isd＝n-nsThe table is a double wire feeding pipeline. The centrifugal ventilator 6 is usually driven by a motor with 50Hz rated frequency, or the motor is driven by a frequency converter, the output frequency of the frequency converter is fixed at high frequency, and the maximum wind power requirement is ensured. Therefore, the pneumatic wire feeding with high negative pressure, large air quantity and high wind speed is carried out, so that the tobacco shred breaking rate is high and the moisture loss is large.
The dynamic frequency f of the motor is related to the number n of cigarette making machines in the system, the equipment distribution (single tube or double tubes), the wind speed V to be controlled, the number R of starting machines of the cigarette making machines and the material requirement condition m:
f＝f(n，V，R，m)
and determining a motor frequency characteristic function formula by combining field practice as follows:
wherein:
(1)
the average value of the set values of the wind speeds of the branch pipes is as follows:
SV1、SV2、…、SVnfor setting the wind speed for the feed tube of each cigarette maker, for example, a system having four cigarette groups, i.e. 4 branch tubes, has n-4 cigarette groups, i.e. 4 cigarette groups
(2)RiThe starting signal of the cigarette making machine is 1 when starting and 0 when stopping;
(3)mia full material signal of a feeding shred collecting bin of the cigarette making machine is 1 when the cigarette making machine is full of the material and 0 when the cigarette making machine is not full of the material;
(4)k1、k2、k3、k4the empirical coefficient is set or changed according to the field condition of the system.
And controlling the output frequency of the motor according to the dynamic characteristic function curve, so that the required main pipe wind pressure of the wind balance system is kept relatively stable, and a basic wind speed control system is established. The system can also maintain the stability of negative pressure by additionally controlling the air supplement regulating valve 4 on each wire feeding branch pipe, regulate the regulating valve 4 of the wire feeding main pipeline and accurately control the wire feeding air speed.
Establishing motor frequency dynamic control, and ensuring that a pneumatic adjusting butterfly valve on each wire feeding branch pipe works at an opening of a-b% during material supply; when the material is waiting, the opening degree of the air supplementing pipe pneumatic adjusting valve 4 of each branch pipe is a-b percent, so that the optimal valve adjusting quality is obtained, and the effects of saving energy and reducing consumption can be achieved.
The utility model discloses the theory of operation: the wind power wire feeding system of the cigarette factory is taken as a concrete case for explanation, and the rule of the change of the working condition of the wind power wire feeding is found out by deeply analyzing the operation characteristics and the process requirements of the wind power wire feeding system. And establishing a motor dynamic frequency control function according to the total number (material requiring equipment) of the cigarette making units, the distribution condition, the required wire feeding air speed (material speed) of each cigarette making machine, the number of running units, the material requiring condition and the like. The wind power wire feeding system controls the frequency of the motor in real time according to a dynamic frequency control function of the motor, and then adjusts wind power through the branch pipe air supplement valve and the main pipe adjusting valve 4, so that wind speed control and motor energy saving are realized.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the protection scope of the present invention, therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (3)
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| CN201920943810.9U CN210236436U (en) | 2019-06-21 | 2019-06-21 | A dynamic energy-saving control system for motor frequency of wind feeding system |
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| CN201920943810.9U CN210236436U (en) | 2019-06-21 | 2019-06-21 | A dynamic energy-saving control system for motor frequency of wind feeding system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111493357A (en) * | 2020-04-20 | 2020-08-07 | 浙江中烟工业有限责任公司 | A fan suction system with load balancing function |
| CN112971203A (en) * | 2021-03-09 | 2021-06-18 | 江苏中烟工业有限责任公司 | Variable speed control method of wind power wire feeder based on requirement |
| CN113974207A (en) * | 2021-11-09 | 2022-01-28 | 浙江中烟工业有限责任公司 | Self-adaptive control method of wind power wire feeding system based on fuzzy control |
| CN115849017A (en) * | 2022-12-02 | 2023-03-28 | 江西中烟工业有限责任公司 | Automatic pipeline air volume adjusting system and method |
-
2019
- 2019-06-21 CN CN201920943810.9U patent/CN210236436U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111493357A (en) * | 2020-04-20 | 2020-08-07 | 浙江中烟工业有限责任公司 | A fan suction system with load balancing function |
| CN112971203A (en) * | 2021-03-09 | 2021-06-18 | 江苏中烟工业有限责任公司 | Variable speed control method of wind power wire feeder based on requirement |
| CN113974207A (en) * | 2021-11-09 | 2022-01-28 | 浙江中烟工业有限责任公司 | Self-adaptive control method of wind power wire feeding system based on fuzzy control |
| CN115849017A (en) * | 2022-12-02 | 2023-03-28 | 江西中烟工业有限责任公司 | Automatic pipeline air volume adjusting system and method |
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