CN205746773U - Vacuum boiler steam-purity value automaton - Google Patents
Vacuum boiler steam-purity value automaton Download PDFInfo
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- CN205746773U CN205746773U CN201620438992.0U CN201620438992U CN205746773U CN 205746773 U CN205746773 U CN 205746773U CN 201620438992 U CN201620438992 U CN 201620438992U CN 205746773 U CN205746773 U CN 205746773U
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- air collector
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- vacuum boiler
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Abstract
Vacuum boiler steam-purity value automaton, including vacuum boiler, it is outside equipped with air collector at vacuum boiler, air collector is by the Heat Room UNICOM of pipeline with vacuum boiler, described air collector is arranged in chiller, and the pipeline before air collector is provided with gas temperature sensor, is provided with heat medium water temperature sensor in boiler, connecting on air collector has air extractor, above-mentioned temperature sensor, air extractor to be connected to control system.This device substantially increases the thermal efficiency of boiler, decreases manual maintenance and the maintenance shut-downs of boiler, and the operation for the long-term efficient stable of vacuum boiler provides good basis.
Description
Technical field
This utility model relates to vacuum boiler steam-purity value automaton, belongs to boiler technology field.
Background technology
Vacuum boiler runs owing to itself belonging to negative pressure, negative pressure in this utility model refers to subatmospheric, in vacuum boiler, heat exchanger pressure-bearing uses, there is the biggest convenience and be used widely, it utilizes the steam liquefied under negative pressure state to release heat, but in concrete use practice, in Boiler Furnace, the problem of steam-purity value highlights, because steam-purity value in stove is required the highest by vacuum boiler, have not condensable gases time boiler heat exchange efficiency decline substantially, so steam-purity value just becomes the essential condition of vacuum boiler stable operation in how making the boiler good stove of maintenance.The several major reasons of steam-purity value decline in the stove of vacuum boiler, first, manufacture precision, micro-leakage can be produced；The second, after long-play, boiler matchmaker's water can produce a small amount of not condensable gases because of chemical reaction with steel plate；3rd, long-distance transport vibrations, boiler and the vibrations of system water circulating transfer, the local micro-leakage caused.Above leakaging cause some can solve by artificial or improve, but can not be completely eliminated, need at regular intervals with regard to steam-purity value in stove of artificial lift, be not inconsistent rear requirements for automatic control.In sum, for enabling vacuum boiler operation steady in a long-term, if vacuum boiler can be made automatically to keep steam-purity value state in a higher stove, it is possible to greatly reduce artificial intervention, reduce user to use difficulty, reduce producer's warranty costs, be more suitable for mass production and sell.Now each boiler producer does not all have effectively control method to maintain steam-purity value in Boiler Furnace, more existing steam-purity value controls device, non-condensable gas gathering speed is slow, cause can not gas to there is the time in boiler long, affect the heat exchange efficiency of boiler, and owing to can not accurately judge the steam-purity value state in boiler, air inlet is bled the most frequently, cause vacuum pump frequent start-stop, and above-mentioned these phenomenons cause having discharged too much water vapour in pumping process, cause energy waste, the energy consumption in boiler actual motion is made to increase, vacuum pump opens, stop frequently, make equipment and valve aging, easily it is out of order, maintenance needs to put into manpower and materials, even need to stop boiler operatiopn, therefore, it is possible to judging accurately and maintaining the steam-purity value in vacuum boiler is the basis that vacuum boiler optimization runs.
Summary of the invention
The purpose of this utility model be to overcome in prior art vacuum boiler steam-purity value maintain present in problem, it is provided that a kind of vacuum boiler steam-purity value automaton and control method.
nullFor realizing the purpose of this utility model，Have employed following technical scheme: vacuum boiler steam-purity value automaton，Including vacuum boiler，It is outside equipped with air collector at vacuum boiler，Air collector is by the Heat Room UNICOM of pipeline with vacuum boiler，Described air collector is arranged in chiller，It is provided with gas temperature sensor on pipeline before air collector，Heat medium water temperature sensor it is provided with in boiler，Connect on air collector and have air extractor，Above-mentioned temperature sensor、Air extractor is connected to control system，Further，Described chiller uses the water inlet header of boiler，Air collector is arranged in water header，Further，Pipeline is positioned at bottom air collector with the interface of discharge，Further，Described gas temperature sensor test side portion is positioned at pipeline center，Further，Described air extractor includes valve and the vacuum pump being connected on air collector，Valve and vacuum pump are connected to control system，Valve includes two automatic valves being connected on pipeline，Two automatic valves are respectively two three-way electromagnetic valves from front to back、Three-way magnetic valve，After vacuum pump is connected to three-way magnetic valve.
Positive Advantageous Effects of the present utility model is: utilize gaseous state and the liquid transformation process of saturated vapor under boiler feed water header low temperature current strengthening negative pressure, steam flowing velocity is made to accelerate, the speed making air collector collect not condensable gases accordingly is greatly improved, non-condensable gas accounting in boiler is the lowest, the heat exchange efficiency making boiler is guaranteed, and use gas temperature sensor detection to enter the steam mobility status of air collector, judge whether condensable gases has not collected to decide whether to open air extractor accurately, realize accurately controlling, effectively reduce the startup frequency of evacuation, extend electromagnetic valve and service life of vacuum pump；Set relatively accurate pumpdown time by the volume size of vacuum tank, reduce energy waste, reduce electromagnetic valve and vacuum pump working time, extension device service life；Two-stage electromagnetic valve is used to reduce leak rate; reduce the frequency of boiler evacuation action; use this device and method that the adaptation of boiler leakage can be carried to be greatly improved; make the purity of steam in boiler maintain to be worth the most accurately; can play and accurately maintain the effect of steam-purity value in stove; use this device and this method boiler in use non-condensable gas that the negative effect of boiler is substantially eliminated; substantially increase the thermal efficiency of boiler; decreasing manual maintenance and the maintenance shut-downs of boiler, the operation for the long-term efficient stable of vacuum boiler provides good basis.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present utility model.
Detailed description of the invention
In order to explain enforcement of the present utility model more fully, it is provided that embodiment of the present utility model, these embodiments are only to elaboration of the present utility model, are not intended to scope of the present utility model.
In conjunction with accompanying drawing explanation further details of to this utility model, accompanying drawing is respectively labeled as: 1: vacuum boiler；2: pipeline；3: gas temperature sensor；4: air collector；5: vacuum diaphragm valve；6: water inlet header；7: heat medium water temperature sensor；8: two three-way electromagnetic valves；9: three-way magnetic valve；10: vacuum pump.nullAs shown in drawings，Vacuum boiler steam-purity value automaton，Including vacuum boiler 1，It is outside equipped with air collector 4 at vacuum boiler 1，Air collector 4 is by the Heat Room UNICOM of pipeline 2 with vacuum boiler，Pipeline is positioned at bottom air collector with the interface of discharge，Described gas temperature sensor test side portion is positioned at pipeline center，Described air collector is arranged in chiller，Chiller uses the water inlet header 6 of boiler，Air collector 4 is arranged in water header 6，Gas temperature sensor 3 it is provided with on pipeline before air collector，Heat medium water temperature sensor 3 it is provided with in boiler，The two temperature sensor、Air extractor is connected to control system，Connecting on air collector 4 has air extractor to include valve and the vacuum pump being connected on air collector，Valve and vacuum pump are connected to control system，Valve includes two automatic valves being connected on pipeline，Two automatic valves are respectively two three-way electromagnetic valves 9 from front to back、Three-way magnetic valve 10，After vacuum pump is connected to three-way magnetic valve，Vacuum diaphragm valve 5 it is additionally provided with before two three-way electromagnetic valves，Vacuum diaphragm valve 5 is in normally open when working，Close during maintenance，Use for overhauling rear end equipment.
Operation principle of the present utility model and step are as follows, have carried out vacuum pumping operation during boiler startup, and concrete is as follows:
1 、Gas temperature sensor in figure not isothermal holding, exposes in atmosphere, and after boiler startup, matchmaker's water seethes with excitement, and furnace pressure raises, and water vapour is filled in boiler everywhere, including being filled with water vapour in air collector；
2 、The quantity of steam size of air collector is entered: when in air collector being water vapour by gas temperature sensor detection, because air collector outer low temperature water quickly flows, water vapour can condense the most rapidly, condensed water constantly flows back in stove because of gravity, can be continuously replenished in air collector with stylish steam, steam continuous flush gas temperature sensor when entering air collector, its temperature detected is close to vapor (steam) temperature；And when in air collector close to full not condensable gases, non-condensable gas blocks steam flowing in air collector, gas temperature sensor is washed away minimizing by steam, gas temperature sensor shell discharges heat with air contact simultaneously, its temperature collected can decline to a great extent, by the change of this temperature, can be accurately judged to enter the situation of change of air collector quantity of steam；
3 、Judge whether air collector is full of not condensable gases by gas temperature sensor with heat medium water temperature sensor temperature comparisons, heat medium water in vacuum boiler is saturation water, therefore, when the temperature of gas temperature sensor is bigger less than the temperature of heat medium water temperature sensor, a large amount of not condensable gases in air collector can be described, is had been filled with；
4, when condensable gases invariably in boiler, gas temperature sensor temperature meeting continued for constant is in uniform temperature, and when in boiler exist can not condensed gas time, after non-condensable gas enters in air collector with steam, blocking vapor collection to flow in air collector, the temperature at gas temperature sensor can constantly decline；
5, when gas temperature sensor reaches certain value with heat medium water temperature sensor, illustrate that air collector not condensable gases fills with, in vacuum boiler, steam-purity value is reduced to a certain degree, two three-way electromagnetic valves, three-way magnetic valve, vacuum pump co-operating is opened by the discharge of not condensable gases by control system, evacuation time is the set time, to reduce the discharge of too much heat, after discharge, two three-way electromagnetic valves, vacuum pump, three-way magnetic valve are closed successively.Above flow process is real-time process, and this device is continuous firing during boiler uses.
This vacuum boiler implosion uses PLC to do logic control device, controls logical order and is previously written in PLC, and after boiler heating boosts, the scan round in PLC of vacuum pumping flow process performs, PLC drive corresponding device to perform, it is achieved automatically controlling of steam-purity value.
After describing embodiment of the present utility model in detail, one of ordinary skilled in the art is clearly understood that, various change and amendment can carried out under spirit without departing from above-mentioned claim, all any simple modification, equivalent variations and modifications above example made according to technical spirit of the present utility model, belong to the scope of technical solutions of the utility model, and this utility model is also not only restricted to the embodiment of example in description.
Claims (5)
1. vacuum boiler steam-purity value automaton, including vacuum boiler, it is characterized in that: be outside equipped with air collector at vacuum boiler, air collector is by the Heat Room UNICOM of pipeline with vacuum boiler, described air collector is arranged in chiller, and the pipeline before air collector is provided with gas temperature sensor, is provided with heat medium water temperature sensor in boiler, connecting on air collector has air extractor, above-mentioned temperature sensor, air extractor to be connected to control system.
Vacuum boiler steam-purity value automaton the most according to claim 1, it is characterised in that: described chiller uses the water inlet header of boiler, and air collector is arranged in water header.
Vacuum boiler steam-purity value automaton the most according to claim 1, it is characterised in that: pipeline is positioned at bottom air collector with the interface of discharge.
Vacuum boiler steam-purity value automaton the most according to claim 1, it is characterised in that: described gas temperature sensor test side portion is positioned at pipeline center.
Vacuum boiler steam-purity value automaton the most according to claim 1, it is characterized in that: described air extractor includes valve and the vacuum pump being connected on air collector, valve and vacuum pump are connected to control system, valve includes two automatic valves being connected on pipeline, two automatic valves are respectively two three-way electromagnetic valves, three-way magnetic valve, after vacuum pump is connected to three-way magnetic valve from front to back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438992.0U CN205746773U (en) | 2016-05-16 | 2016-05-16 | Vacuum boiler steam-purity value automaton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620438992.0U CN205746773U (en) | 2016-05-16 | 2016-05-16 | Vacuum boiler steam-purity value automaton |
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| Publication Number | Publication Date |
|---|---|
| CN205746773U true CN205746773U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620438992.0U Expired - Fee Related CN205746773U (en) | 2016-05-16 | 2016-05-16 | Vacuum boiler steam-purity value automaton |
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| CN (1) | CN205746773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841131A (en) * | 2016-05-16 | 2016-08-10 | 方快锅炉有限公司 | Automatic control device and method for steam purity of vacuum boiler |
-
2016
- 2016-05-16 CN CN201620438992.0U patent/CN205746773U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841131A (en) * | 2016-05-16 | 2016-08-10 | 方快锅炉有限公司 | Automatic control device and method for steam purity of vacuum boiler |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20210516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |