CN104597835A - System for measuring and increasing air change rate of aging oven - Google Patents
System for measuring and increasing air change rate of aging oven Download PDFInfo
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- CN104597835A CN104597835A CN201510071127.7A CN201510071127A CN104597835A CN 104597835 A CN104597835 A CN 104597835A CN 201510071127 A CN201510071127 A CN 201510071127A CN 104597835 A CN104597835 A CN 104597835A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- Automation & Control Theory (AREA)
- Electric Ovens (AREA)
Abstract
A system for measuring and increasing the air change rate of an aging oven comprises a blower, a frequency converter, an intelligent power meter, and a man-machine interface and PLC all-in-one machine. The man-machine interface and PLC all-in-one machine is used for processing and displaying detecting data and comprises a touch display screen and a PLC. The intelligent power meter is used for detecting the power consumption of the aging oven when air changing occurs and when air changing stops and transmitting the data to the PLC for data processing. The PLC acquires the current power data of the intelligent power meter and processes the data, the PLC acquires parameters manually input through the touch display screen and processes the parameters, the PLC calculates the current air change rate according to a standard formula if the current power data and the parameter data are valid, and the current air change rate is displayed on the touch display screen. The system has the advantages that the air change rate of the aging oven can be monitored in real time, the air change rate can be changed according to requirements and current measured values, so that testing can be performed under testing conditions conforming to national standards.
Description
Technical field
The present invention relates to a kind of system measured and improve ageing oven ventilation rate.
Background technology
Ageing oven is used for the resistance to oxidation ageing properties of testing rubber and goods thereof, and in test process, ventilation rate is one of most important test parameter, directly affects the test result of properties of product.If test does not meet standard, the properties of product recorded when especially ventilation rate is inadequate lower than its actual performance, can apply this kind of product, may cause the harmful effects such as security incident.
And some ageing ovens can not Real-Time Monitoring ventilation rate when user uses, and is difficult to calibrate it when especially ventilation rate changes under the impact of the environmental factors such as temperature.The invention of this system, not only can Real-Time Monitoring ventilation rate just based on to the not enough consideration of above ageing oven itself, can also according to the requirement to ventilation rate during test, and adjustment ventilation rate, to reach best test effect.
Summary of the invention
Technical matters to be solved by this invention is: monitor in real time the ventilation rate of ageing oven, and changes ventilation rate, to test under the test condition meeting national standard with current measured value as requested.
In order to solve the problems of the technologies described above, the present invention proposes following technical scheme: a kind of measurement and improve the system of ageing oven ventilation rate, and it comprises a fan blower, a frequency converter, an intelligent power meter and a personal-machine interface and PLC all-in-one;
This man-machine interface and PLC all-in-one are used for processing and displaying detection data, and it includes touch display screen and PLC;
This intelligent power meter for detecting ageing oven respectively when taking a breath and power consumption when not taking a breath, and sends these data to PLC and carries out data processing;
After electrifying startup, this PLC and intelligent power meter carry out communication, PLC obtains the current power data of this intelligent power meter and processes, if the current data of intelligent power meter can not be obtained, correctly whether the address then checking the whether identical and intelligent power meter of the baud rate of intelligent power meter and PLC, data layout, Modbus protocol format, changed rear PLC and again obtained power data and again judge whether effectively;
Simultaneously, this PLC and touch display screen carry out communication, PLC obtains the parameter that manually inputs at touch display screen and processes, if these data can not be obtained, then check the baud rate of PLC and touch display screen communication and data layout whether identical, changed the rear PLC data that again get parms and again judged whether effectively;
If the current power data of intelligent power meter and all effectively talking about at the supplemental characteristic that touch display screen manually inputs, PLC calculates current ventilation rate according to normalized form, then on touch display screen, shows current ventilation rate;
This frequency converter includes manual operation knob, can be controlled the blow rate required of this fan blower by this manual operation knob, improves ageing oven ventilation rate.
Compared to existing technology, the present invention has following technique effect:
1, with the blow rate required of Frequency Converter Control fan blower, utilize the rate of ventilation in the fan blower forced aging case increase unit interval, to improve the ventilation rate of ageing oven, reach the effect improving ventilation rate.
2, utilize RS485 communication interface, PLC reads the current power value of intelligent power meter in real time, and processes reading data.
3, when utilizing the manual operation knob of frequency converter to control the blow rate required of fan blower, the change of ventilation rate can be seen in time at touch display screen, thus the ventilation rate of ageing oven be controlled in the scope of ventilation requirement.
Accompanying drawing explanation
Fig. 1 is that the present invention measures and improves the processing flow chart of system of ageing oven ventilation rate.
Embodiment
Refer to Fig. 1, a kind of measurement and improve the system of ageing oven ventilation rate, it comprises a fan blower, a frequency converter, an intelligent power meter and a personal-machine interface and PLC all-in-one.
This man-machine interface and PLC all-in-one are used for processing and displaying detection data, and it includes touch display screen and PLC (programmable logic controller (PLC)).
These data for detecting ageing oven respectively when taking a breath and power consumption when not taking a breath, and utilize modbus communication protocol to send PLC to by RS485 communication interface to carry out data processing by this intelligent power meter.
After electrifying startup, this PLC and intelligent power meter carry out communication, PLC obtains the current power data of this intelligent power meter and processes, if the current data of intelligent power meter can not be obtained, correctly whether the address then checking the whether identical and intelligent power meter of the baud rate of intelligent power meter and PLC, data layout, Modbus protocol format, changed rear PLC and again obtained power data and again judge whether effectively.
Simultaneously, this PLC and touch display screen carry out communication, PLC obtains the parameter that manually inputs at touch display screen and processes, if these data can not be obtained, then check the baud rate of PLC and touch display screen communication and data layout whether identical, changed the rear PLC data that again get parms and again judged whether effectively.
If the current power data of intelligent power meter and all effectively talking about at the supplemental characteristic that touch display screen manually inputs, PLC calculates current ventilation rate according to normalized form, then on touch display screen, shows current ventilation rate.
Above-mentioned normalized form is the standard formulated according to International Electrotechnical Commission (IEC) publication IEC60216-4-1:1990 (third edition) " determining directive/guide the 4th part of insulating material thermotolerance: ageing oven Section 1: single chamber baking oven ", is calculated as follows the deflation rate in baking oven: N=3.59 (P
2-P
1)/V
p△ T
In formula: N-rate of ventilation per hour;
P
1-average power drawn amount when not being vented, represent with W, it is that the power consumption recorded from the reading watt-hour meter obtains divided by test period (h);
P
2average power drawn amount during-exhaust, represents with W, calculates with above-mentioned same method;
V
pthe inner volume of-chamber, dm-----
3;
The temperature difference between △ T-baking oven and test room air, represents with K.
This frequency converter includes manual operation knob (not shown), can be controlled the blow rate required of this fan blower by this manual operation knob, improves ageing oven ventilation rate, can see the change of ventilation rate at touch display screen.
The present invention has following beneficial effect:
1, with the blow rate required of Frequency Converter Control fan blower, utilize the rate of ventilation in the fan blower forced aging case increase unit interval, to improve the ventilation rate of ageing oven, reach the effect improving ventilation rate.
2, utilize RS485 communication interface, PLC reads the current power value of intelligent power meter in real time, and processes reading data.
3, when utilizing the manual operation knob of frequency converter to control the blow rate required of fan blower, the change of ventilation rate can be seen in time at touch display screen, thus the ventilation rate of ageing oven be controlled in the scope of ventilation requirement.
Claims (2)
1. measure and improve a system for ageing oven ventilation rate, it is characterized in that, it comprises a fan blower, a frequency converter, an intelligent power meter and a personal-machine interface and PLC all-in-one;
This man-machine interface and PLC all-in-one are used for processing and displaying detection data, and it includes touch display screen and PLC;
This intelligent power meter for detecting ageing oven respectively when taking a breath and power consumption when not taking a breath, and sends these data to PLC and carries out data processing;
After electrifying startup, this PLC and intelligent power meter carry out communication, PLC obtains the current power data of this intelligent power meter and processes, if the current data of intelligent power meter can not be obtained, correctly whether the address then checking the whether identical and intelligent power meter of the baud rate of intelligent power meter and PLC, data layout, Modbus protocol format, changed rear PLC and again obtained power data and again judge whether effectively;
Simultaneously, this PLC and touch display screen carry out communication, PLC obtains the parameter that manually inputs at touch display screen and processes, if these data can not be obtained, then check the baud rate of PLC and touch display screen communication and data layout whether identical, changed the rear PLC data that again get parms and again judged whether effectively;
If the current power data of intelligent power meter and all effectively talking about at the supplemental characteristic that touch display screen manually inputs, PLC calculates current ventilation rate according to normalized form, then on touch display screen, shows current ventilation rate;
This frequency converter includes manual operation knob, can be controlled the blow rate required of this fan blower by this manual operation knob, improves ageing oven ventilation rate.
2. a kind of system measured and improve ageing oven ventilation rate according to claim 1, it is characterized in that, above-mentioned normalized form is N=3.59 (P
2-P
1)/V
p△ T
In formula: N-rate of ventilation per hour;
P
1-average power drawn amount when not being vented, represent with W, it is that the power consumption recorded from the reading watt-hour meter obtains divided by test period (h);
P
2average power drawn amount during-exhaust, represents with W, calculates with above-mentioned same method;
V
pthe inner volume of-chamber, dm-----
3;
The temperature difference between △ T-baking oven and test room air, represents with K.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071127.7A CN104597835A (en) | 2015-02-11 | 2015-02-11 | System for measuring and increasing air change rate of aging oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071127.7A CN104597835A (en) | 2015-02-11 | 2015-02-11 | System for measuring and increasing air change rate of aging oven |
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| Publication Number | Publication Date |
|---|---|
| CN104597835A true CN104597835A (en) | 2015-05-06 |
Family
ID=53123698
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510071127.7A Pending CN104597835A (en) | 2015-02-11 | 2015-02-11 | System for measuring and increasing air change rate of aging oven |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623249A (en) * | 2022-02-15 | 2022-06-14 | 国高材高分子材料产业创新中心有限公司 | Method and device for adjusting air exchange rate of thermal oxidation aging box |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0340332B2 (en) * | 1987-11-27 | 1991-06-18 | ||
| CN201247240Y (en) * | 2008-08-14 | 2009-05-27 | 高铁检测仪器（东莞）有限公司 | Full-automatic air exchange type age tester |
| CN202627570U (en) * | 2012-05-21 | 2012-12-26 | 宁波艾德生仪器有限公司 | Novel intelligent high-temperature aging test room |
-
2015
- 2015-02-11 CN CN201510071127.7A patent/CN104597835A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0340332B2 (en) * | 1987-11-27 | 1991-06-18 | ||
| CN201247240Y (en) * | 2008-08-14 | 2009-05-27 | 高铁检测仪器（东莞）有限公司 | Full-automatic air exchange type age tester |
| CN202627570U (en) * | 2012-05-21 | 2012-12-26 | 宁波艾德生仪器有限公司 | Novel intelligent high-temperature aging test room |
Non-Patent Citations (3)
| Title |
|---|
| 刘晓捷；陈琴珠；谢红妹: "塑料空气老化试验箱控制装置技术改造", 《金山油化纤》 * |
| 张冰: "一种电子产品老化测试***的设计与实现", 《工业控制计算机》 * |
| 郭珩；桂春雷；李芹: "PLC技术在强制循环式热空气老化试验机中的应用", 《电子世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114623249A (en) * | 2022-02-15 | 2022-06-14 | 国高材高分子材料产业创新中心有限公司 | Method and device for adjusting air exchange rate of thermal oxidation aging box |
| CN114623249B (en) * | 2022-02-15 | 2024-04-05 | 国高材高分子材料产业创新中心有限公司 | Method and device for adjusting ventilation rate of thermal oxidation aging box |
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Application publication date: 20150506 |