CN205137411U - Big undulant steam load steady voltage control system - Google Patents
Big undulant steam load steady voltage control system Download PDFInfo
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- CN205137411U CN205137411U CN201520845567.9U CN201520845567U CN205137411U CN 205137411 U CN205137411 U CN 205137411U CN 201520845567 U CN201520845567 U CN 201520845567U CN 205137411 U CN205137411 U CN 205137411U
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Abstract
The utility model discloses a big undulant steam load steady voltage control system sets up the heat accumulator pressure sensor who detects inside atmospheric pressure at the top of heat accumulator, the parallelly connected bypass valve that sets up of heat accumulator sets up the signal of telecommunication synthesis operation control bypass valve of steam flow sensor, heat accumulator pressure sensor and steam flow sensor on the steam line way, set up inlet pressure sensor and inlet regulating valve on the admission pipeline of heat accumulator, the play steam pipe of heat accumulator sets up outlet pressure sensor and export governing valve on the road. The bypass valve was opened completely when heat accumulator pressure sensor was less than the setting value, avoided the boiler output excess load, supplied vapour also to give the heat accumulator heat supply for production, the size of bypass valve according to actual need control aperture when being greater than the setting value. Respond to inlet pressure and outlet pressure respectively, the aperture size of adjustment governing valve, the inlet pressure sensor can be avoided water entrained by steam output in the boiler -steam dome and lead to boiler water shortage, the process steam can be stabilized to the outlet pressure sensor.
Description
Technical field
The utility model relates to Steam pressure control technical field, specifically relates to a kind of great fluctuation process steam load voltage-stabilization control system.
Background technology
The industrially extensive use of current high-temperature steam, at oil, chemical industry, weave, brewage, cigarette, papermaking, in numerous industry such as food processing, larger with vapour load fluctuation.Such as, citric acid is the industry of carrying out further processing of grains with fermentation method, and steam consumption is large and large with vapour peak-valley difference, along with the maximization (at present existing 500 cubic metres) of fermentation tank.The sky of large tank disappears, real tank is sterilized and go out the steam ejection liquefaction that tank heats and corn flour is starched all needs high-quality steam, requires to complete sterilizing and heating work within the time short to the greatest extent, needs a large amount of steam in the short time, so very big to the impact of steam pipe system.These industry steam supply loads are very unstable, or even big ups and downs, cause the quality of steam supply and quantity can not be guaranteed, and cause the thermal efficiency of boiler and service life to decline.
In order to adapt to steam load big ups and downs and ensure that pressure is relatively stable, China starts to carry out storage heater research the sixties in last century, and storage heater is a kind of reservoir vessel of steam thermal energy, has the effect of balance steam supply peak load.Steam-supplying system for load fluctuation can make boiler load stablize; Effectively heat can be reclaimed for bootstrap system.Charging process: when gas utilization unit load is less than boiler duty, in boiler steam supply pipe, pressure raises, and steam fills thermal by storage heater inside and sprays in hot water, improves hot water temperature and makes the saturated vapour pressure in storage heater space raise accordingly; Exothermic process: when gas utilization unit load is higher than boiler steam supply, in boiler steam supply pipe, pressure will reduce, and when dropping to lower than storage heater air space saturation pressure, in storage heater, saturated hot-water becomes superheated water always, thus carry out boiling heat release, produce steam with supplementary supply arrangement vapour.
Current stage storage heater is normal in parallel with boiler, do not controlled very well, result of use is unsatisfactory, still there will be the phenomenon of pressure transient, time excessive by vapour transient fluctuation, control valve cannot action rapidly, and ductwork pressure is extremely low, and steam is also with water directly will be sucked out from boiler-steam dome, cause boiler because of lack of water blowing out, fault rate is high, also makes steam quality decline, and affects industrial operating mode and normally produces; When few with vapour, control valve equally cannot action rapidly, and ductwork pressure is high, causes the high blowing out of boiler pressure, even externally emptying, causes unnecessary loss, and pressure is high also impacts production to by vapour operating mode.Be stabilized in ± 0.05Mpa and the large industry that fluctuates some pressure requirements especially, cannot normally use at all, storage heater does not really play its effect.
Therefore for a person skilled in the art, how designing a kind of voltage-stabilization control system when steam load fluctuation is large, is technical problem urgently to be resolved hurrily at present.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of great fluctuation process steam load voltage-stabilization control system, comprises the storage heater being series at boiler-steam dome, and the top of described storage heater arranges the storage heater pressure sensor detecting air pressure inside; Described storage heater is arranged in parallel by-passing valve, and steam supply pipeline arranges steam flow sensor, by-passing valve described in the comprehensive operation control of the signal of telecommunication of described storage heater pressure sensor and described steam flow sensor;
The admission passage of described storage heater is arranged inlet pressure sensor and inlet adjusting valve; The steam outlet pipe road of described storage heater is arranged outlet pressure sensor and outlet regulating valve.
Alternatively, the first cylinder and the second cylinder is also comprised; Described first cylinder is communicated with boiler-steam dome, described storage heater and described by-passing valve; Described second cylinder is communicated with described storage heater, described by-passing valve and steam supply pipeline.
Alternatively, described inlet pressure sensor and described inlet adjusting valve are arranged on the pipeline between described first cylinder and described storage heater; Described outlet pressure sensor and described outlet regulating valve are arranged on the pipeline between described second cylinder and described storage heater.
Alternatively, the signal of telecommunication of described inlet pressure sensor first inputs inlet pressure adjuster and preset value and compares and send inlet adjusting valve again to; The signal of telecommunication of described outlet pressure sensor first inputs outlet pressure regulator and preset value and compares and send outlet regulating valve again to.
Alternatively, the signal of telecommunication of described steam flow sensor is first delivered to and compares rear input Dypass pressure regulator with the value that presets in steam flow regulator and realize controlling described by-passing valve.
Alternatively, described by-passing valve adopts electric control valve.
Great fluctuation process steam load voltage-stabilizing system provided by the utility model, realizes voltage stabilizing by storage heater, and to tackle instantaneous fast-changing steam pressure, the storage heater pressure sensor arranged at the top of storage heater is for detecting the vapour pressure force value of storage heater inside.Be arranged in parallel by-passing valve with storage heater, by-passing valve can control the steam break-make directly exported from boiler-steam dome.Steam supply pipeline arranges steam flow sensor, and the signal of telecommunication of storage heater pressure sensor and steam flow sensor through the opening and closing of comprehensive operation control by-passing valve, and then controls the size of the final quantity of steam exported.Storage heater pressure sensor first compares with setting value, and when opening completely lower than by-passing valve during setting value, when avoiding storage heater hypotony, boiler exports excess load, gives while producing steam supply also to storage heater heat supply; When storage heater pressure is greater than setting value and storage heater pressure in allowed band, by-passing valve controls the size of aperture according to actual needs.When process steam load bursts becomes large, steam flow can reflect the size of actual steam consumption in time, signal changes aperture size after being fed to and calculating by analysis in by-passing valve, and steam supply pipeline is respectively from boiler-steam dome and storage heater, and the stability of pressure is guaranteed.
The inlet ductwork and export pipeline of storage heater are provided with inlet pressure sensor, inlet adjusting valve and outlet pressure sensor, outlet regulating valve respectively.Can respond to inlet pressure and outlet pressure respectively, to adjust the aperture size of control valve, inlet pressure sensor can avoid storage heater hypotony exported by water entrained by steam in boiler-steam dome and cause boiler water shortage; Outlet pressure sensor can steady production vapour, avoids process steam unstable.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The device connection layout of the great fluctuation process steam load voltage-stabilization control system that Fig. 1 provides for the utility model;
Fig. 2 A is the flow chart of inlet pressure module;
Fig. 2 B is the flow chart of outlet pressure module;
Fig. 2 C is the flow chart of steam flow control module.
Wherein:
Storage heater 1, by-passing valve 2, storage heater pressure sensor 3, steam flow sensor 4, first cylinder 51, second cylinder 52, inlet pressure sensor 61, inlet adjusting valve 62, outlet pressure sensor 71, outlet regulating valve 72.
Detailed description of the invention
Core of the present utility model is to provide a kind of great fluctuation process steam load voltage-stabilization control system, can realize the pressure stability of system steam supply when supplying steam fluctuation amplitude and being large.
In order to make those skilled in the art understand technical scheme provided by the utility model better, below in conjunction with accompanying drawing and concrete embodiment, great fluctuation process steam load voltage-stabilization control system provided by the utility model is described in detail.
As shown in Figure 1, the device connection layout of the control system designed by the utility model.This system mainly includes the storage heater 1 that to be connected with boiler-steam dome, and connect with boiler-steam dome, the high-temperature steam exported from boiler-steam dome can directly enter into storage heater 1; In order to the size of air pressure in storage heater 1 be detected, arrange storage heater pressure sensor 3 at the top of storage heater 1, the force value of induction can be converted to the signal of telecommunication and export by storage heater pressure sensor 3.Be arranged in parallel by-passing valve 2 with storage heater 1, the high-temperature steam exported from boiler-steam dome also can pass through from by-passing valve 2, directly can export without storage heater 1, and the steam also namely exported from boiler-steam dome can export respectively through two-way pipeline.Steam supply pipeline arranges steam flow sensor 4, and for detecting the size of the steam flow exported in real time, steam supply pipeline only has a road, and detected is actual use value, and flow value is converted to the signal of telecommunication.The electric signal transmission of storage heater pressure sensor 3 and steam flow sensor 4, to by-passing valve 2 place, draws the degree that by-passing valve 2 will be opened through Integrated comparative place to go, reach the object accurately controlling the steam flow exported.By-passing valve 2 can adopt electric control valve, is controlled it by the signal of telecommunication, meets the demand of automation, certainly, selects the valve of other kinds to be also fine.
Storage heater pressure sensor 3 first compares with setting value, when the pressure of storage heater inside is lower than setting value, by-passing valve 2 will open to maximum, namely open completely, when avoiding storage heater internal pressure too low, boiler-steam dome exports excess load, also to storage heater steam supply while giving production steam supply, unnecessary steam is temporarily stored in storage heater 1.When the air pressure in storage heater 1 is greater than setting value, the pressure of storage heater 1 in allowed limits, and by-passing valve 2 will regulate the size of aperture as required.The signal of telecommunication of steam flow sensor 4 is first transported in steam flow regulator and compares with the value preset, Dypass pressure regulator is exported to again by steam flow regulator, because steam flow can reflect the size of process steam load in time, Dypass pressure regulator output signal is delivered in by-passing valve 2, rapid analysis calculates the size direction of signal, changes by-passing valve 2 aperture.By the vapour pressure in steam pipe road respectively from boiler-steam dome and storage heater 1, the stabilization energy of pressure accesses guarantee.In this application the module by storage heater pressure sensor 3 and steam flow sensor 4 co-controlling by-passing valve 2 is called steam flow control module.
In addition, the admission passage of storage heater 1 arranges inlet pressure sensor 61 and inlet adjusting valve 62, the steam outlet pipe road of storage heater 1 arranges outlet pressure sensor 71 and outlet regulating valve 72.Inlet pressure sensor 61 and outlet pressure sensor 71 detect the pressure size in respective pipeline respectively, and be converted to the signal of telecommunication, signal is transported in inlet adjusting valve 62 by inlet pressure sensor 61, and signal is transported in outlet regulating valve 72 by outlet pressure sensor 71.Signal is transported in inlet pressure adjuster and compares with preset value by inlet pressure sensor 61, then is transported to inlet adjusting valve 62.Signal is transported in outlet pressure regulator and compares with preset value by outlet pressure sensor 71, then is transported to outlet regulating valve 72.Inlet adjusting valve 62 and outlet regulating valve 72 can control the openings of sizes of respective pipeline respectively, control the circulation of steam.
Particularly, voltage-stabilization control system set in the utility model further comprises the first cylinder 51 and the second cylinder 52, first cylinder 51 is communicated with boiler-steam dome, storage heater 1 and by-passing valve 2 respectively, boiler-steam dome inputs steam in the first cylinder 51, and the steam in the first cylinder 51 exports storage heater 1 and by-passing valve 2 respectively to.The steam exported from by-passing valve 2 and storage heater 1 is input to the second cylinder 52, then exports steam supply through the second cylinder 52.First cylinder 51 and the second cylinder 52 collect the space of steam as shunting, and can adopt the forms such as triple valve, these are all included in design concept of the present utility model.
Inlet pressure sensor 61 and inlet adjusting valve 62 are arranged between the first cylinder 51 and storage heater 1, as inlet pressure module.Outlet pressure sensor 71 and outlet regulating valve 72 are arranged between the second cylinder 52 and storage heater 1, as outlet pressure module.As shown in Fig. 2 A, 2B and 2C, be respectively the flow chart of inlet pressure module, outlet pressure module and steam flow control module.The signal of inlet pressure sensor 61 is transported in inlet adjusting valve 62, compares with the setting value of pressure, judges the aperture size of inlet adjusting valve 62 after operational analysis.The pressure of storage heater 1 import can be stablized, avoid the hypotony of storage heater 1 and the water entrained by steam in boiler-steam dome is exported, causing boiler water shortage blowing out, reduce boiler operatiopn fault.
The signal of outlet pressure sensor 71 is transported in outlet regulating valve 72 and processes, and compares with setting value, after operational analysis process, judges the size of outlet control valve 72 aperture.Can the pressure of steady production vapour, avoid process steam pressure instability and the operating mode irregular operating caused.
The utility model have employed storage heater 1 design in parallel with by-passing valve 2, prevent steam consumption from changing suddenly and the pressure instability caused, pressure sensor and control valve is provided with respectively at the import export of storage heater 1, avoid the pressure instability phenomenon of steam when entering and export storage heater 1, thus pressure stability in ensure that the process that whole system is run.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein, when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a great fluctuation process steam load voltage-stabilization control system, is characterized in that, comprises the storage heater (1) being series at boiler-steam dome, and the top of described storage heater (1) arranges the storage heater pressure sensor (3) detecting air pressure inside; Described storage heater (1) is arranged in parallel by-passing valve (2), steam supply pipeline arranges steam flow sensor (4), by-passing valve (2) described in the comprehensive operation control of the signal of telecommunication of described storage heater pressure sensor (3) and described steam flow sensor (4);
The admission passage of described storage heater (1) is arranged inlet pressure sensor (61) and inlet adjusting valve (62); The steam outlet pipe road of described storage heater (1) is arranged outlet pressure sensor (71) and outlet regulating valve (72).
2. great fluctuation process steam load voltage-stabilization control system according to claim 1, is characterized in that, also comprises the first cylinder (51) and the second cylinder (52); Described first cylinder (51) is communicated with boiler-steam dome, described storage heater (1) and described by-passing valve (2); Described second cylinder (52) is communicated with described storage heater (1), described by-passing valve (2) and steam supply pipeline.
3. great fluctuation process steam load voltage-stabilization control system according to claim 2, it is characterized in that, described inlet pressure sensor (61) and described inlet adjusting valve (62) are arranged on the pipeline between described first cylinder (51) and described storage heater (1); Described outlet pressure sensor (71) and described outlet regulating valve (72) are arranged on the pipeline between described second cylinder (52) and described storage heater (1).
4. great fluctuation process steam load voltage-stabilization control system according to claim 3, it is characterized in that, the signal of telecommunication of described inlet pressure sensor (61) first inputs inlet pressure adjuster and preset value and compares and send inlet adjusting valve (62) again to; The signal of telecommunication of described outlet pressure sensor (71) first inputs outlet pressure regulator and preset value and compares and send outlet regulating valve (72) again to.
5. great fluctuation process steam load voltage-stabilization control system according to claim 4, it is characterized in that, the signal of telecommunication of described steam flow sensor (4) is first delivered to and compares rear input Dypass pressure regulator with the value preset in steam flow regulator and realize controlling described by-passing valve (2).
6. great fluctuation process steam load voltage-stabilization control system according to claim 4, is characterized in that, described by-passing valve (2) adopts electric control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845567.9U CN205137411U (en) | 2015-10-27 | 2015-10-27 | Big undulant steam load steady voltage control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845567.9U CN205137411U (en) | 2015-10-27 | 2015-10-27 | Big undulant steam load steady voltage control system |
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| CN205137411U true CN205137411U (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973983A (en) * | 2017-12-28 | 2019-07-05 | 红塔烟草(集团)有限责任公司 | A kind of heat accumulator system and its control method of quick response |
| CN114110548A (en) * | 2021-10-29 | 2022-03-01 | 国能四川天明发电有限公司 | Steam supply equipment and control method thereof |
-
2015
- 2015-10-27 CN CN201520845567.9U patent/CN205137411U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973983A (en) * | 2017-12-28 | 2019-07-05 | 红塔烟草(集团)有限责任公司 | A kind of heat accumulator system and its control method of quick response |
| CN114110548A (en) * | 2021-10-29 | 2022-03-01 | 国能四川天明发电有限公司 | Steam supply equipment and control method thereof |
| CN114110548B (en) * | 2021-10-29 | 2023-11-24 | 国能四川天明发电有限公司 | Steam supply equipment and control method thereof |
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