CN103045843B - Superheated water pressure stabilizing system for continuous annealing furnace - Google Patents
Superheated water pressure stabilizing system for continuous annealing furnace Download PDFInfo
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- CN103045843B CN103045843B CN201210580413.2A CN201210580413A CN103045843B CN 103045843 B CN103045843 B CN 103045843B CN 201210580413 A CN201210580413 A CN 201210580413A CN 103045843 B CN103045843 B CN 103045843B
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Abstract
The invention provides a superheated water pressure stabilizing system for a continuous annealing furnace. The superheated water pressure stabilizing system comprises a booster bump, a storage tank, a water regulating injection tube, a pressure controller, an energy accumulator and a cooling tank, wherein the storage tank is used for supplying water for the booster bump, and the water regulating injection tube is used for regulating the liquid level of the storage tank. The energy accumulator and the booster bump are respectively connected with the cooling tank, and the cooling tank is communicated with a main superheated water circulation line. The pressure controller is used for detecting the pressure of the main superheated water circulation line and comparing the detected pressure value with a normal value. When the difference between the detected pressure value and the normal value is larger than the preset value, the opening of the booster bump is controlled. The superheated water pressure stabilizing system can keep the water pressure in a superheated water tube network well and meanwhile replenishes water in the tube network in time, so that the gasification of water in the tube network is furthest reduced, the problems caused by cavitation erosion and air bubbles in the line are solved, the instrument cannot be damaged, the utilization efficiency of hot water is increased, and the service life of superheated water line equipment and instruments is prolonged.
Description
Technical field
The present invention relates to the annealing furnace of band steel continuous annealing and Continuous Hot Dip Galvanizing, particularly relate to a kind of superheated water voltage-stabilizing system for continuous annealing furnace.
Background technology
Along with to the understanding of energy saving of system and demand, increasing client has carried out unified consideration to the medium energy consumption in band steel heat treatment line unit.Arrange interchanger and reclaim fume afterheat in annealing furnace, supply cleaning section interchanger heating rinsing water by the heated hot water of fume afterheat, while meeting cleaning section hot water demand, reclaimed again the waste heat of flue gas, this technology obtains popularity.
But, the fluctuation of exhaust gas volumn that the output fluctuation due to unit causes annealing furnace to produce, and the superheated water consumption of cleaning section, leakage loss etc. in pipeline, cause certain superheated water pressure surge.Saturation pressure water under the pressure of high-temperature water is less than this temperature, will produce a large amount of water vapour.In pipe, a large amount of water vapour not only will accelerate the corrosion of pipeline and system device, the corrosion iron rust blocking pipeline equipment simultaneously produced and instrument etc.; A large amount of water vapour causes disadvantageous effect to superheated water systemic circulation simultaneously, and bubble produces turbulent flow, recirculated water pump performance is reduced or lost efficacy, even making pressure controlled valve cisco unity malfunction, cause serious consequence; On the other hand, a large amount of bubbles existed in pipeline can be attached on interchanger heat-transfer surface, affect the heat exchange efficiency of interchanger; The generation of noise is strengthened when bubble also can flow in pipe network.And during the hypertonia of high-temperature water, part instrument is impaired, affects to the operation of system.
Therefore, in order to solve the gasification problem of superheated water in pipeline and avoid instrument impaired, the pressure of superheated water must be made to remain stable.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of superheated water voltage-stabilizing system for continuous annealing furnace that better can maintain superheated water pipe network internal pressure.
The present invention for solving the problems of the technologies described above taked technical scheme is:
For the superheated water voltage-stabilizing system of continuous annealing furnace, it is characterized in that, it comprises topping-up pump, for the storage tank supplying water to described topping-up pump, injection tube is regulated for regulating the water of described storage tank liquid level, pressure controller, energy storage, and cooling tank, described energy storage and topping-up pump are connected with described cooling tank respectively, described cooling tank and superheated water major cycle pipeline connection, described pressure controller is for detecting the pressure of described superheated water major cycle pipeline, and the force value of described detection and normal value are contrasted, the unlatching of topping-up pump is controlled when the difference of detecting pressure value and normal value is greater than preset value.
In such scheme, described superheated water voltage-stabilizing system also comprises the water pipe be connected with described superheated water major cycle pipeline.
In such scheme, described energy storage is airloaded accumulator.
Compared with prior art, the beneficial effect that the present invention obtains is: the cooperation utilizing energy storage and topping-up pump, self-poise can maintain pipeline inner pressure, can improve and only use topping-up pump and the feedback response brought is slow and can cause the shortcoming of certain fluctuation to pipe network internal pressure.Therefore, utilize superheated water voltage-stabilizing system of the present invention, can be good at maintaining the hydraulic pressure in superheated water pipe network, water in pipe network is supplemented in time simultaneously, reduce to the greatest extent the gasification of the water in pipe network to greatest extent, solve the problem because bubble in cavitation erosion and pipeline causes, and avoid the generation of instrument damaged phenomenon, add the utilising efficiency of hot water, extend the life-span of superheated water pipeline equipment and instrument, bring direct economic benefit.
Accompanying drawing explanation
The structural representation of the superheated water voltage-stabilizing system for continuous annealing furnace that Fig. 1 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described, and certain following embodiment should not be construed as limitation of the present invention.
As shown in Figure 1, its a kind of superheated water voltage-stabilizing system for continuous annealing furnace provided for the embodiment of the present invention, it comprise topping-up pump 14, for give topping-up pump 14 supply water storage tank 16, for regulate storage tank 16 liquid level water regulate injection tube 15, pressure controller 19, energy storage 13 and cooling tank 9.Energy storage 13 is connected with cooling tank 9 respectively with topping-up pump 14.Cooling tank 9 is communicated with superheated water major cycle pipeline 2, in the present embodiment, is connected between cooling tank 9 with superheated water major cycle pipeline 2 by pipeline 6.The force value of described detection and normal value for being detected the pressure of hot water major cycle pipeline 2, and contrast by pressure controller 19, control the unlatching of topping-up pump 14 when the difference of detecting pressure value and normal value is greater than preset value.Trip valve 8 is provided with between cooling tank 9 and pipeline 6.Energy storage 13 ingress is provided with trip valve 12.Cooling tank 9 ingress is provided with valve 11.Valve 11 and trip valve 12 are for cutting off energy storage 13 and cooling tank 9 respectively.The top of pipeline 6 is provided with Safety relief valve 7, for during hypertonia, diffusing safely in pipe network.The ingress of storage tank 16 is provided with trip valve 17.Water regulates on injection tube 15 and is provided with adjustment water injection self-acting valve 18.
This superheated water voltage-stabilizing system also comprises the water pipe 3 be connected with superheated water major cycle pipeline 2.Water pipe 3 is disposed with manual valve 5 and check valve 4.Water pipe 3, manual valve 5 and check valve 4 are given in closed circuit superheated water circulation line for first time and are full of water, or overhaul and supplementing after a large amount of leakage.In the present embodiment, energy storage 13 is airloaded accumulator.
The working process of this superheated water voltage-stabilizing system is as follows:
The superheated water of flue gas/superheated water interchanger 10 generation of Mist heat recovering, user's points such as unit cleaning section are fed to through recycle pump 1, after heat supply user, the superheated water of low temperature is got back to again interchanger by pipeline 2 and is again heated, superheated water is closed cycle in pipe network, continuous absorption fume afterheat, and supply the users such as cleaning section and put heat; When unit change of production, the exhaust gas volumn of generation is in fluctuation;
Served as hot water heat exchanger 10 produce superheated water temperature because of flue gas heat very sufficient time, the temperature of superheated water can raise fast, causes overpressure to improve, now, safety pressure margin in superheated water major cycle pipeline 2 by pipeline 6, and is delivered to storage in energy storage 13 after cooling tank 9.Because energy storage 13 is by the rubber film equilibrium pressure in tank, be protection energy storage 13 and respective line, set up cooling tank 9 before energy storage 13, superheated water enters energy storage 13 again after cooling tank 9 cools;
When the pressure in superheated water main circulation pipe road 2 has little pressure drop, by the safety pressure margin self-equilibrating stored in energy storage 13.When the force value of superheated water major cycle pipeline 2 that pressure controller 19 detects and the difference of normal value are greater than preset value, then show that the pressure energy of release in energy storage 13 is inadequate, energy storage 13 self-equilibrating cannot be passed through, therefore the unlatching of topping-up pump 14 is controlled, for giving pressurization in superheated water major cycle pipeline 2.Water in topping-up pump 14 derives from storage tank 16.In storage tank 16, arrange liquidometer and valve 18 has linkage relationship, when detecting that in storage tank 16, liquid level is too low, valve 18 is opened automatically, soft water of annotating in storage tank 16.Valve 17 is for the closedown of storage tank 16.
It should be noted that, those of ordinary skill in the art should be appreciated that and can modify to technical scheme of the present invention or equivalent replacement, and does not depart from aim and the scope of technical solution of the present invention, and it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. for the superheated water voltage-stabilizing system of continuous annealing furnace, it is characterized in that, it comprises topping-up pump, for the storage tank supplying water to described topping-up pump, injection tube is regulated for regulating the water of described storage tank liquid level, pressure controller, energy storage, and cooling tank, described energy storage and topping-up pump are connected with described cooling tank respectively, described cooling tank and superheated water major cycle pipeline connection, described pressure controller is for detecting the pressure of described superheated water major cycle pipeline, and the force value of described detection and normal value are contrasted, the unlatching of topping-up pump is controlled when the difference of detecting pressure value and normal value is greater than preset value.
2. superheated water voltage-stabilizing system as claimed in claim 1, it is characterized in that, described superheated water voltage-stabilizing system also comprises the water pipe be connected with described superheated water major cycle pipeline.
3. superheated water voltage-stabilizing system as claimed in claim 1 or 2, it is characterized in that, described energy storage is airloaded accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580413.2A CN103045843B (en) | 2012-12-28 | 2012-12-28 | Superheated water pressure stabilizing system for continuous annealing furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580413.2A CN103045843B (en) | 2012-12-28 | 2012-12-28 | Superheated water pressure stabilizing system for continuous annealing furnace |
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| Publication Number | Publication Date |
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| CN103045843A CN103045843A (en) | 2013-04-17 |
| CN103045843B true CN103045843B (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210580413.2A Expired - Fee Related CN103045843B (en) | 2012-12-28 | 2012-12-28 | Superheated water pressure stabilizing system for continuous annealing furnace |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871042A (en) * | 2010-06-25 | 2010-10-27 | 中冶南方(武汉)威仕工业炉有限公司 | Method and device for reusing flue gas waste heat of annealing furnace of continuous annealing unit |
| CN102778052A (en) * | 2012-06-27 | 2012-11-14 | 南京波腾科技工程有限公司 | Double-valve water tank |
| CN203065538U (en) * | 2012-12-28 | 2013-07-17 | 中冶南方(武汉)威仕工业炉有限公司 | Superheated water pressure stabilizing system for continuous annealing furnace |
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2012
- 2012-12-28 CN CN201210580413.2A patent/CN103045843B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871042A (en) * | 2010-06-25 | 2010-10-27 | 中冶南方(武汉)威仕工业炉有限公司 | Method and device for reusing flue gas waste heat of annealing furnace of continuous annealing unit |
| CN102778052A (en) * | 2012-06-27 | 2012-11-14 | 南京波腾科技工程有限公司 | Double-valve water tank |
| CN203065538U (en) * | 2012-12-28 | 2013-07-17 | 中冶南方(武汉)威仕工业炉有限公司 | Superheated water pressure stabilizing system for continuous annealing furnace |
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| CN103045843A (en) | 2013-04-17 |
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