CN204496323U - A kind of automatic control system for steam heater - Google Patents
A kind of automatic control system for steam heater Download PDFInfo
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- CN204496323U CN204496323U CN201520203236.5U CN201520203236U CN204496323U CN 204496323 U CN204496323 U CN 204496323U CN 201520203236 U CN201520203236 U CN 201520203236U CN 204496323 U CN204496323 U CN 204496323U
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- steam
- electronic
- control valve
- pneumatic control
- automatic control
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Abstract
The utility model discloses a kind of automatic control system for steam heater, it comprises steam-heating apparatus and automatic control system, line temperature sensor installed by steam-heating apparatus, steam conveying pipe is installed the first electronic or pneumatic control valve and the second electronic or pneumatic control valve respectively, line pressure sensor is arranged between above-mentioned series connected valve, electronic or the pneumatic control valve aperture by Stress control first, control the second electronic or pneumatic control valve aperture by temperature, thus realize the stable of steam flow; This system can be applicable to the larger situation of vapor pressure fluctuation, when pressure surge, still can ensure that steam heater operates normally and efficiently, the complete Automatic Control of whole process, without the need to human users, equipment is simple, floor area is little, and operating cost is low, has a good application prospect.
Description
Technical field
The utility model relates to steam-heated automation field, particularly relates to a kind of for needing the automatic control system of stable steam.
Background technology
Steam Heating is the conventional type of heating of chemical industry and metallurgical production process, can be divided into direct steam heating and indirect steam heating two kinds.Control at present for steam often adopts flow control or temperature control mode, and when vapor pressure is stablized, these two kinds of control modes all can meet the stable operation of gas utilization unit.But when vapor pressure exists larger fluctuation, general control mode is all difficult to the stable operation of guarantee equipment.
For the problems referred to above, inventor develops a kind of automatic control system for steam heater through lot of experiments, the steam heater including but not limited to stripping tower etc. can be effective to, this system is when vapor pressure fluctuation is larger, still can keep steady operation, the complete Automatic Control of overall process, without the need to human users, equipment is simple, and floor area is little.
Summary of the invention
The purpose of this utility model is to provide a kind of automatic control system for steam heater, this system is by the first electronic or pneumatic control valve and the second electronic or pneumatic control valve of being installed in series on steam conveying pipe, the first electronic or pneumatic control valve aperture is controlled at line pressure sensor by what pipeline was installed, the second electronic or pneumatic control valve aperture is controlled by the line temperature sensor that steam heater is installed, above-mentioned two valves cooperatively interact work, solve vapor pressure fluctuation problem, thus ensure the stable of steam flow, this system equipment is simple, floor area is little, the situation that vapor pressure fluctuation is larger can be widely used in, have a good application prospect.
For reaching above-mentioned purpose, the utility model by the following technical solutions:
A kind of automatic control system for steam heater, it comprises steam-heating apparatus and automatic control system, line temperature sensor installed by described steam-heating apparatus, steam conveying pipe is installed the first electronic or pneumatic control valve and the second electronic or pneumatic control valve respectively, between described first electronic or pneumatic control valve and the second electronic or pneumatic control valve, is arranged on line pressure sensor.
At described second electronic or pneumatic control valve be arranged on linear flow rate sensor between line pressure sensor.
Show count at the described pressure that is also provided with between line pressure sensor and online flow sensor.
Compared with prior art, the utility model has following beneficial effect:
1, the utility model by being installed in series respectively by the electronic of pressure and temperature control or operated pneumatic valve on steam conveying pipe, utilizes the work that cooperatively interacts between valve, ensures the stable of steam flow when achieving vapor pressure fluctuation;
2, the utility model is when vapor pressure fluctuation is larger, and still can keep steam-heating apparatus effective operation, flow control is stablized;
3, the utility model equipment is simple, and floor area is little, and run the complete Automatic Control of overall process, without the need to human users, not only operating cost is low, and applied widely, has a good application prospect.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the automatic control system for steam heater described in the utility model.
In figure: 1-steam-heating apparatus; 2-line temperature sensor; Electronic or the pneumatic control valve of 3-first; Electronic or the pneumatic control valve of 4-second; 5-is at line pressure sensor; The online flow sensor of 6-; 7-pressure display meter.
The present invention is described in more detail below.But following example is only simple and easy example of the present utility model, do not represent or limit rights protection scope of the present utility model, protection domain of the present utility model is as the criterion with claims.
Embodiment
For better the utility model being described, be convenient to understand the technical solution of the utility model, typical but non-limiting embodiment of the present utility model is as follows:
See Fig. 1, a kind of automatic control system for steam heater, its composition comprises signal collecting device, actuating equipment and control loop three parts.Described signal collecting device comprise line temperature sensor (with
represent), line pressure sensor (with
represent), online flow sensor (with
represent), described actuating equipment is electrically operated valve or operated pneumatic valve.
Described control loop refers to the data measured by signal collecting device.
Concrete structure is as follows:
A kind of automatic control system for steam-heating apparatus, it comprises steam-heating apparatus 1 and automatic control system, line temperature sensor 2 installed by described steam-heating apparatus 1, steam conveying pipe is installed in series, and first is electronic or pneumatic control valve 3 and second is electronic or pneumatic control valve door 4, described first electronic or pneumatic control valve 3 and second is electronic or be arranged on line pressure sensor 5 between pneumatic control valve 4; At described second electronic or pneumatic control valve 4 be arranged on linear flow rate sensor 6 between line pressure sensor 5; Between line pressure sensor 5 and online flow sensor 6, pressure is also installed shows meter 7 described.
Embodiment 1
Adopt the utility model as follows for the concrete rate-determining steps of the automatic control system of steam heater:
1) sampling period of design temperature, pressure is 5s, and the online flow sensor sampling period is 5min;
2) set technological parameter as follows, main pipeline vapor pressure fluctuates between 0.5-1.0MPa, arranges PV controling parameters, makes PTC indicated value be 0.45MPa, arranges TV controling parameters, makes TIC temperature be 120 DEG C;
3) steam to enter after conveying main pipeline after the first electronic or operated pneumatic valve PV, by online determination of pressure sensor pressure, be failure to actuate when pressure is 0.45MPa, the first electronic or pneumatic control valve PV increase aperture is controlled as pressure < 0.45MPa, control the first electronic or pneumatic control valve PV reduction aperture as pressure > 0.45MPa, finally realize voltage stabilizing;
4) steam through voltage stabilizing enters second electronic or operated pneumatic valve TV, vapor (steam) temperature is measured by the line temperature sensor TIC be arranged on steam-heating apparatus, be failure to actuate when temperature is 120 DEG C, when temperature is lower than controlling the second electronic or pneumatic control valve TV increase aperture when 120 DEG C, when temperature is higher than controlling the second electronic or pneumatic control valve TV reduction aperture when 120 DEG C, thus realize the stable of steam flow.
5) by online flow sensor monitoring main pipeline fluctuations in discharge, directly pipeline pressure changing is observed by pressure display meter.
Applicant states, the utility model illustrates detailed construction feature of the present utility model and disposal route by above-described embodiment, but the utility model is not limited to above-mentioned detailed construction feature and disposal route, namely do not mean that the utility model must rely on above-mentioned detailed construction feature and disposal route could be implemented.Person of ordinary skill in the field should understand; to any improvement of the present utility model; to equivalence replacement and the increase of accessory, the concrete way choice etc. of parts selected by the utility model, all drop within protection domain of the present utility model and open scope.
Claims (3)
1. the automatic control system for steam heater, it comprises steam-heating apparatus (1) and automatic control system, it is characterized in that, described steam-heating apparatus (1) is installed line temperature sensor (2), steam conveying pipe is installed the first electronic or pneumatic control valve (3) and the second electronic or pneumatic control valve (4) respectively, between described first electronic or pneumatic control valve (3) and the second electronic or pneumatic control valve (4), is arranged on line pressure sensor (5).
2. the system as claimed in claim 1, is characterized in that, at described second electronic or pneumatic control valve (4) be arranged on linear flow rate sensor (6) between line pressure sensor (5).
3. system as claimed in claim 1 or 2, is characterized in that, shows count (7) at the described pressure that is also provided with between line pressure sensor (5) and online flow sensor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520203236.5U CN204496323U (en) | 2015-04-07 | 2015-04-07 | A kind of automatic control system for steam heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520203236.5U CN204496323U (en) | 2015-04-07 | 2015-04-07 | A kind of automatic control system for steam heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204496323U true CN204496323U (en) | 2015-07-22 |
Family
ID=53575622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520203236.5U Active CN204496323U (en) | 2015-04-07 | 2015-04-07 | A kind of automatic control system for steam heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204496323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296938A (en) * | 2018-10-23 | 2019-02-01 | 襄阳金达成精细化工有限公司 | A kind of steam transmission system |
-
2015
- 2015-04-07 CN CN201520203236.5U patent/CN204496323U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109296938A (en) * | 2018-10-23 | 2019-02-01 | 襄阳金达成精细化工有限公司 | A kind of steam transmission system |
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| GR01 | Patent grant |