CN203024433U - Temperature control system of heat medium furnace evaporator - Google Patents
Temperature control system of heat medium furnace evaporator Download PDFInfo
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- CN203024433U CN203024433U CN 201320016046 CN201320016046U CN203024433U CN 203024433 U CN203024433 U CN 203024433U CN 201320016046 CN201320016046 CN 201320016046 CN 201320016046 U CN201320016046 U CN 201320016046U CN 203024433 U CN203024433 U CN 203024433U
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- heat medium
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Abstract
The utility model discloses a temperature control system of a heat medium furnace evaporator. A programmable logic controller (PLC) adopting a PID (Proportion Integration Differentiation) algorithm is connected with an analog input module, an analog output module and an electric heating furnace, respectively; the electric heating furnace is connected with a primary heat medium inlet adjusting valve, a primary heat medium outlet, a secondary heat medium inlet and a secondary heat medium outlet, respectively; the temperature of the secondary heat medium outlet is input to the analog input module in the form of a platinum resistance signal; the analog output module is connected with the primary heat medium inlet adjusting valve for adjusting the primary heat medium inlet adjusting valve by virtue of the temperature of the secondary heat medium outlet; and a temperature sensor is connected to the analog input module. Preferably, the analog input module is connected to two temperature adjustors which are in series connected, so that the adjusting valve of the primary heat medium inlet is controlled by in series connecting the two temperature adjustors, and therefore, constant-value control is realized. Moreover, a PID cascade stage controller module is adopted, so that the response speed of the whole system is improved.
Description
Technical field
The utility model belongs to weaving electric meter control field, relates to the heat treatment temperature control technology, is specifically related to a kind of hot Media Oven evaporator temperature control system.
Background technology
In the production of chemical fibre process, spinning manifold need to be incubated and heat, and adjusts the temperature of spinning manifold according to the requirement of the spinning kind of producing.Therefore, temperature need to be controlled in certain scope.Existing temperature control system technology is very ripe, and such as the hot Media Oven evaporator temperature control system of, Beijing Zhongli Machinery Engineering Co.,Ltd (be called for short " in beautiful machine processed "), its characteristics are as follows:
This temperature control system comprises, 1. the secondary heat medium outlet temperature is with RTD signal access Siemens analog input module (AI); 2. analog output module (AO) is controlled primary fluid entrance control valve; 3.PID computing is completed by the central processing unit of a Siemens S7-315; 4. the outlet temperature of secondary heating agent is controlled primary fluid entrance control valve.
The weak point of said temperature Control System Design is: when heating agent station primary fluid supplying temperature changes (as the heating agent station failure, fuel changes, the primary fluid flow changes), will cause controlling untimely, deviation is large, thereby can not guarantee that in spinning process, temperature is in desired scope.
The utility model content
The purpose of this utility model is to provide a kind of control system that can in time control the hot Media Oven evaporator temperature.For achieving the above object, the utility model adopts following technical scheme.
a kind of hot Media Oven evaporator temperature control system, this system comprises Programmable Logic Controller PLC, the analog input module, analog output module, the PID module, primary fluid entrance control valve, the primary fluid outlet, secondary heating agent entrance, the outlet of secondary heating agent and electric furnace, wherein, the Programmable Logic Controller PLC that adopts pid algorithm respectively with the analog input module, analog output module, electric furnace is connected, described electric furnace respectively with primary fluid entrance control valve, the primary fluid outlet, secondary heating agent entrance, the outlet of secondary heating agent is connected, the secondary heat medium outlet temperature is with the described analog input module of RTD signal input, described analog output module is connected with primary fluid entrance control valve, regulate primary fluid entrance control valve by the outlet temperature of described secondary heating agent, it is characterized in that: at described analog input module access one temperature sensor.
As preferably, at two thermoregulators that are connected in series of described analog input module access.Be cascaded by two thermoregulators and control the control valve of primary fluid entrance, realize definite value control.
Further, described PID module is the cascade PID module, adopts the cascade controller module interference can be added in subloop, is controlled by subloop it is suppressed; The inertia of subloop is regulated by subloop, thereby has improved the response speed of whole system.
The beneficial effects of the utility model are: two thermoregulators are cascaded and control primary fluid entrance control valve, realize definite value control.Adopt the PID control logic that the temperature in technical process is accurately controlled, realize the chain closed-loop control between each process equipment, further adopt the cascade controller module, improved the response speed of whole system.
Description of drawings
Fig. 1 is pid stream journey figure.
Fig. 2 is PID tandem control structure figure.Wherein, 1. the primary fluid temperature is secondary object; 2. the secondary heat medium temperature is main object; 3. the primary fluid thermoregulator is secondary controller; 4. secondary heating agent thermoregulator is master selector.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated; the present embodiment is implemented under take technical solutions of the utility model as prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Embodiment 1: hot Media Oven evaporator temperature control system pid stream journey
Figure 1 shows that the utility model hot Media Oven evaporator temperature control system pid stream journey figure, this system comprises Programmable Logic Controller PLC, the analog input module, analog output module, the PID module, primary fluid entrance control valve, the primary fluid outlet, secondary heating agent entrance, the outlet of secondary heating agent and electric furnace, wherein, the Programmable Logic Controller PLC that adopts pid algorithm respectively with the analog input module, analog output module, electric furnace is connected, described electric furnace respectively with primary fluid entrance control valve, the primary fluid outlet, secondary heating agent entrance, the outlet of secondary heating agent is connected, the secondary heat medium outlet temperature is with the described analog input module of RTD signal input, described analog output module is connected with primary fluid entrance control valve, regulate primary fluid entrance control valve by the outlet temperature of described secondary heating agent, it is characterized in that: at described analog input module access one temperature sensor.At two thermoregulators that are connected in series of described analog input module access.
Embodiment 2: hot Media Oven evaporator temperature control system PID tandem control structure
Fig. 2 is the utility model hot Media Oven evaporator temperature control system PID tandem control structure figure.As shown in Figure 2, wherein, 1. the primary fluid temperature is secondary object; 2. the secondary heat medium temperature is main object; 3. the primary fluid thermoregulator is secondary controller; 4. secondary heating agent thermoregulator is master selector.
Master selector, namely secondary heating agent thermoregulator plays the fine tuning effect, carries out definite value and controls; Secondary controller, namely the primary fluid thermoregulator plays the coarse adjustment effect, carries out servo-actuated control.The loop that major loop is comprised of master selector, secondary controller, actuator, secondary object (primary fluid temperature), main object (secondary heat medium temperature), main measurement, subloop is by secondary controller, actuator, secondary object and the secondary loop that forms of measuring.F
1For entering the disturbance of subloop, F
2For entering the disturbance of major loop.Master selector and secondary controller are connected in series, and are the setting values of another adjuster during the output of an adjuster, and this tandem control structure is comprised of two adjusters and a control valve, and the interference that enters subloop is had very strong inhibition ability.
In sum, be more than preferred embodiment of the present utility model, be not to limit protection domain of the present utility model.In the situation that do not deviate from the utility model spirit and essence thereof; the person of ordinary skill in the field works as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of claim of the present utility model.
Claims (3)
1. hot Media Oven evaporator temperature control system, this system comprises Programmable Logic Controller PLC, the analog input module, analog output module, the PID module, primary fluid entrance control valve, the primary fluid outlet, secondary heating agent entrance, the outlet of secondary heating agent and electric furnace, wherein, the Programmable Logic Controller PLC that adopts pid algorithm respectively with the analog input module, analog output module, electric furnace is connected, described electric furnace respectively with primary fluid entrance control valve, the primary fluid outlet, secondary heating agent entrance, the outlet of secondary heating agent is connected, the secondary heat medium outlet temperature is with the described analog input module of RTD signal input, described analog output module is connected with primary fluid entrance control valve, regulate primary fluid entrance control valve by the outlet temperature of described secondary heating agent, it is characterized in that: at described analog input module access one temperature sensor.
2. hot Media Oven evaporator temperature control system according to claim 1, is characterized in that: at two thermoregulators that are connected in series of described analog input module access.
3. hot Media Oven evaporator temperature control system according to claim 1 and 2, it is characterized in that: described PID module is the cascade PID module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320016046 CN203024433U (en) | 2013-01-11 | 2013-01-11 | Temperature control system of heat medium furnace evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320016046 CN203024433U (en) | 2013-01-11 | 2013-01-11 | Temperature control system of heat medium furnace evaporator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203024433U true CN203024433U (en) | 2013-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320016046 Withdrawn - After Issue CN203024433U (en) | 2013-01-11 | 2013-01-11 | Temperature control system of heat medium furnace evaporator |
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| CN (1) | CN203024433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047769A (en) * | 2013-01-11 | 2013-04-17 | 江苏长乐纤维科技有限公司 | Temperature control system for evaporator of heat medium heater |
-
2013
- 2013-01-11 CN CN 201320016046 patent/CN203024433U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047769A (en) * | 2013-01-11 | 2013-04-17 | 江苏长乐纤维科技有限公司 | Temperature control system for evaporator of heat medium heater |
| CN103047769B (en) * | 2013-01-11 | 2015-03-25 | 江苏长乐纤维科技有限公司 | Temperature control system for evaporator of heat medium heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130626 Effective date of abandoning: 20150325 |
|
| RGAV | Abandon patent right to avoid regrant |