CN205137423U - Steam boiler high temperature feedwater gas -tight stopper control system - Google Patents
Steam boiler high temperature feedwater gas -tight stopper control system Download PDFInfo
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- CN205137423U CN205137423U CN201520845401.7U CN201520845401U CN205137423U CN 205137423 U CN205137423 U CN 205137423U CN 201520845401 U CN201520845401 U CN 201520845401U CN 205137423 U CN205137423 U CN 205137423U
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Abstract
The utility model provides a steam boiler high temperature feedwater gas -tight stopper control system, including setting up pressure sensor and the temperature sensor on the supply line between economizer and boiler -steam dome, pressure sensor with temperature sensor's signal is relatively judged in carrying the warm -pressing controller, set up disappointing switch on supply line. The temperature that saturated steam corresponds under the pressure condition of difference is directly proportional, and the last pressure of supply line probably turns into saturated steam's corresponding temperature, when the actual measurement temperature is greater than the theoretical temperature of pressure conversion, explains the inside water of pipeline and vaporized that the steam is emitted to the disappointing switch on the accessible supply line at this moment, and it does not have steam among the supply line to ensure, guarantees the normal clear of water supply process.
Description
Technical field
The utility model relates to steam boiler water-supply technology field, specifically relates to the anti-vent plug control system of a kind of steam boiler high temperature water-supply.
Background technology
Biomass fuel boiler water supply system is normally made up of softened water tank (removal incrustation scale), feed pump and economizer.Boiler feedwater process is: the water in softened water tank is first fetched water by feed pump, then through the economizer import of boiler export by flue gas waste heat recovery, water absorbs after heat through economizer, and water temperature can improve about 30 DEG C, finally enters boiler-steam dome from economizer exit.At present, most industries is in order to improve the thermal efficiency, and the water of softened water tank is all through waste heat of boiler tail gas recovery or condensing hot air furnace makes water temperature improve, and can reach 90 DEG C ~ about 95 DEG C, soft water entered boiler-steam dome after can reaching 120 DEG C ~ 125 DEG C after entering economizer heating again.But, in the middle of actual boiler operatiopn, most of boiler feedwater is all be interrupted feedwater, because boiler load is not of uniform size, when load hour, feedwater is just long for break time, and after feed pump is out of service, pipeline hydraulic pressure is often 0.2 ~ 0.3Mpa, the coolant-temperature gage of frequent appearance after economizer slowly arrives 135 DEG C ~ 155 DEG C, now feed pump cannot throw water into boiler-steam dome, there will be boiler water shortage, causes cannot normally running to boiler.Main cause is that feedwater piping water temperature improves, exceed saturated-steam temperature corresponding to Pipeline Water pressure (saturated vapour pressure 0.2 ~ 0.3Mpa corresponding temperature is 120 DEG C ~ 133 DEG C), cause pipeline to gasify, define pipeline air jam phenomenon, feed pump cannot supply water to drum.
Therefore for a person skilled in the art, preventing the water system of gas lock when how to design a kind of boiler feedwater, is the current technical issues that need to address.
Utility model content
For solving the problems of the technologies described above, the utility model provides the anti-vent plug control system of a kind of steam boiler high temperature water-supply, comprise the pressure sensor on the supply line that is arranged between economizer and boiler-steam dome and temperature sensor, the signal of described pressure sensor and described temperature sensor is transported to multilevel iudge in temperature and pressure controller; Supply line arranges disappointing switch.
Alternatively, described disappointing switch is magnetic valve, is arranged on the supply line between described pressure sensor and described temperature sensor, and described magnetic valve controls opening and closing by the judged result of described temperature and pressure controller.
Alternatively, the other end of described magnetic valve is communicated in softened water tank.
Alternatively, described pressure sensor is near described economizer, and described temperature sensor is near described boiler-steam dome.
Alternatively, between described temperature sensor and boiler-steam dome, check-valves is set.
Alternatively, described magnetic valve is connected to the top of softened water tank sidewall.
The pipeline of the anti-vent plug control system of steam boiler high temperature water-supply provided by the utility model between economizer and boiler-steam dome is provided with pressure sensor and temperature sensor respectively, pressure sensor is used for the pressure size of signal piping inside, and temperature sensor can the temperature of signal piping inside.The temperature of saturated vapor corresponding under different pressure condition is directly proportional, pressure on supply line may be converted into the corresponding temperature of saturated vapor, when observed temperature is greater than the theoretical temperatures of pressure conversion, illustrate that the water of channel interior is vaporized, now by the disappointing switch on supply line, water vapour is released, guarantee do not have steam in supply line, assure feed water process is normally carried out.
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 anti-vent plug control system of steam boiler high temperature water-supply that Fig. 1 provides for the utility model.
Wherein:
Pressure sensor 1, economizer 11, boiler-steam dome 12, temperature sensor 2, temperature and pressure controller 3, magnetic valve 4.
Detailed description of the invention
Core of the present utility model is to provide a kind of steam boiler high temperature water-supply anti-vent plug control system, and this system can be avoided forming steam in supply channel, and assure feed water process is normally carried out.
In order to make those skilled in the art understand the anti-vent plug control system of steam boiler high temperature water-supply provided by the utility model better, below in conjunction with accompanying drawing and specific embodiment, the technical solution of the utility model is described in detail.
As shown in Figure 1, the johning knot composition of the control system provided for the utility model.This control system is used in the process that supplies water in boiler-steam dome 12 of softened water tank, supply line specifically between economizer 11 and boiler-steam dome 12 is provided with pressure sensor 1 and temperature sensor 2, because the water in softened water tank is transported in boiler-steam dome 12 after economizer 11 heats again.Pressure sensor 1 is arranged at the side near economizer 11 in a kind of embodiment of the present utility model; temperature sensor 2 is arranged at the side near boiler-steam dome 12; certainly; application for reality also can adjust as required accordingly, and these are also included within protection domain of the present utility model.
The signal of pressure sensor 1 and temperature sensor 2 is transported in temperature and pressure controller 3 and compares judgement, because temperature corresponding under different pressure condition is directly proportional the (pressure 0.2 ~ 0.3MPa of saturated vapor, corresponding temperature is 120 DEG C ~ 133 DEG C), so the pressure on the feedwater piping measured can be converted into the temperature corresponding to saturated vapor.When temperature sensor 2 observed temperature is greater than the temperature of force value conversion of pressure sensor 1, illustrate that the water of pipe interior is vaporized, if both are equal, proving not vaporization, is still liquid.
If vaporize in inside, then open the disappointing switch that supply line is arranged, the steam of supply line inside is released, ensure the regular supply of water.Particularly, disappointing switch set in the utility model is magnetic valve 4, magnetic valve 4 is arranged on the supply line between pressure sensor 1 and temperature sensor 2, and magnetic valve 4 is connected by the signal of telecommunication with temperature and pressure controller 3, by the opening and closing of judged result Controlling solenoid valve 4 or the size of aperture of temperature and pressure controller 3.Achieve bleeding process Automated condtrol, without the need to manual operation, improve the operational efficiency of device.Pipeline between temperature sensor 2 and boiler-steam dome also arranging check-valves, for preventing the water backflow be passed in boiler-steam dome, guaranteeing safe operation.
In order to make the utilization rate of water in whole system higher, by the other end of magnetic valve 4 by pipeline connection in softened water tank, become aqueous water after the cooling of the water vapour that is discharged and be back in softened water tank, improve the utilization rate of water.Magnetic valve 4 is connected to the top of softened water tank 4 sidewall, can is directly mixed in the water of softened water tank after steam liquefied.
The anti-vent plug control system of the steam boiler high temperature water-supply that the utility model provides, make use of actual temperature in supply line to compare with by measuring the theoretical temperatures that the force value that obtains transforms, both relatively after result judge channel interior be liquid state or gaseous state, if steam is released by gaseous state, carrying out smoothly of assure feed water.
Certainly, the principle that the utility model utilizes is theoretical temperatures and the comparing of actual temperature, and the result also theoretical pressure and actual pressure can being used to compare judges, these expansions also belong to design concept of the present utility model.
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. the anti-vent plug control system of steam boiler high temperature water-supply, it is characterized in that, comprise the pressure sensor (1) on the supply line that is arranged between economizer (11) and boiler-steam dome (12) and temperature sensor (2), the signal of described pressure sensor (1) and described temperature sensor (2) is transported to multilevel iudge in temperature and pressure controller (3); Supply line arranges disappointing switch.
2. the anti-vent plug control system of steam boiler high temperature water-supply according to claim 1, it is characterized in that, described disappointing switch is magnetic valve (4), be arranged on the supply line between described pressure sensor (1) and described temperature sensor (2), described magnetic valve (4) controls opening and closing by the judged result of described temperature and pressure controller (3).
3. the anti-vent plug control system of steam boiler high temperature water-supply according to claim 2, is characterized in that, the other end of described magnetic valve (4) is communicated in softened water tank.
4. the anti-vent plug control system of steam boiler high temperature water-supply according to claim 3, it is characterized in that, described pressure sensor (1) is near described economizer (11), and described temperature sensor (2) is near described boiler-steam dome (12).
5. the anti-vent plug control system of steam boiler high temperature water-supply according to claim 3, is characterized in that, arranges check-valves between described temperature sensor (2) and boiler-steam dome.
6. the anti-vent plug control system of steam boiler high temperature water-supply according to claim 3, is characterized in that, described magnetic valve (4) is connected to the top of softened water tank sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845401.7U CN205137423U (en) | 2015-10-27 | 2015-10-27 | Steam boiler high temperature feedwater gas -tight stopper control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845401.7U CN205137423U (en) | 2015-10-27 | 2015-10-27 | Steam boiler high temperature feedwater gas -tight stopper control system |
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| CN205137423U true CN205137423U (en) | 2016-04-06 |
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| CN201520845401.7U Active CN205137423U (en) | 2015-10-27 | 2015-10-27 | Steam boiler high temperature feedwater gas -tight stopper control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043795A (en) * | 2019-04-17 | 2019-07-23 | 江苏中建工程设计研究院有限公司 | It is a kind of to avoid the incomplete method of liquid chlorine vaporization using P-T control methods |
| CN110056765A (en) * | 2019-04-17 | 2019-07-26 | 江苏中建工程设计研究院有限公司 | It is a kind of to avoid the incomplete method of liquid chlorine vaporization using T-T control methods |
-
2015
- 2015-10-27 CN CN201520845401.7U patent/CN205137423U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110043795A (en) * | 2019-04-17 | 2019-07-23 | 江苏中建工程设计研究院有限公司 | It is a kind of to avoid the incomplete method of liquid chlorine vaporization using P-T control methods |
| CN110056765A (en) * | 2019-04-17 | 2019-07-26 | 江苏中建工程设计研究院有限公司 | It is a kind of to avoid the incomplete method of liquid chlorine vaporization using T-T control methods |
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