CN103045843A - Superheated water pressure stabilizing system for continuous annealing furnace - Google Patents

Superheated water pressure stabilizing system for continuous annealing furnace Download PDF

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Publication number
CN103045843A
CN103045843A CN2012105804132A CN201210580413A CN103045843A CN 103045843 A CN103045843 A CN 103045843A CN 2012105804132 A CN2012105804132 A CN 2012105804132A CN 201210580413 A CN201210580413 A CN 201210580413A CN 103045843 A CN103045843 A CN 103045843A
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China
Prior art keywords
water
superheated water
pressure
stabilizing system
superheated
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Application number
CN2012105804132A
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Chinese (zh)
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CN103045843B (en
Inventor
李楠
田发禹
郑剑辉
王俊刚
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Wisdri Wuhan Wis Industrial Furnace Co Ltd
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Wisdri Wuhan Wis Industrial Furnace Co Ltd
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Priority to CN201210580413.2A priority Critical patent/CN103045843B/en
Publication of CN103045843A publication Critical patent/CN103045843A/en
Application granted granted Critical
Publication of CN103045843B publication Critical patent/CN103045843B/en
Expired - Fee Related legal-status Critical Current
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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

The superheated water voltage-stabilizing system that is used for continuous annealing furnace
Technical field
The present invention relates to the annealing furnace with steel continuous annealing and Continuous Hot Dip Galvanizing, relate in particular to a kind of superheated water voltage-stabilizing system for continuous annealing furnace.
Background technology
Along with understanding and the demand to energy saving of system, increasing client is to having carried out unified consideration with the medium energy consumption in the steel heat-treatment lines unit.Fume afterheat in the interchanger recovery annealing furnace is set, heats superheated water and supply with cleaning section interchanger heating rinse water by fume afterheat, when satisfying the cleaning section hot water demand, reclaimed again the waste heat of flue gas, this technology is generally promoted.
But, because the exhaust gas volumn fluctuation that the output fluctuation of unit causes annealing furnace to produce, and the superheated water consumption of cleaning section, the leakage loss in the pipeline etc., certain superheated water pressure surge caused.When the pressure of high-temperature water less than this temperature under the saturation pressure of aqueous vapor, will produce a large amount of water vapour.A large amount of water vapour not only will be accelerated the corrosion of pipeline and system device, produced simultaneously corrosion iron rust blocking pipeline equipment and instrument etc. in the pipe; A large amount of water vapour causes disadvantageous effect to the superheated water systemic circulation simultaneously, and the Bubble formation turbulent flow reduces the recirculated water pump performance or inefficacy, even makes the pressure controlled valve cisco unity malfunction, causes serious consequence; On the other hand, a large amount of bubbles that exist in the pipeline can be attached on the interchanger heat-transfer surface, affect the heat exchange efficiency of interchanger; When also can flowing, strengthens in bubble the generation of noise in pipe network.And the part instrument is impaired during the hypertonia of high-temperature water, and the operation of system is affected.
Therefore, for the gasification problem that solves superheated water in the pipeline and avoid instrument impaired, must make the pressure of superheated water keep stable.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of superheated water voltage-stabilizing system that is used for continuous annealing furnace that can better keep superheated water pipe network internal pressure is provided.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
The superheated water voltage-stabilizing system that is used for continuous annealing furnace, it is characterized in that, it comprises topping-up pump, be used for the storage tank to described topping-up pump water supply, be used for regulating the water adjusting injection tube of described storage tank liquid level, pressure controller, energy storage, and cooling tank, described energy storage links to each other with described cooling tank respectively with topping-up pump, described cooling tank and superheated water major cycle pipeline connection, described pressure controller is for detection of the pressure of described superheated water major cycle pipeline, and force value and the normal value of described detection compared, when the unlatching of the difference of detecting pressure value and normal value control topping-up pump during greater than preset value.
In the such scheme, described superheated water voltage-stabilizing system also comprises the water pipe that is connected with described superheated water major cycle pipeline.
In the such scheme, described energy storage is gas-loaded formula energy storage.
Compared with prior art, the beneficial effect that the present invention obtains is: utilize the cooperation of energy storage and topping-up pump, can self-poise keep pipeline inner pressure, can improve the shortcoming that the feedback response of only using topping-up pump and bringing is slow and can cause to the pipe network internal pressure certain fluctuation.Therefore, utilize superheated water voltage-stabilizing system of the present invention, can be good at keeping the hydraulic pressure in the superheated water pipe network, simultaneously the water in the pipe network is in time replenished, reduce to greatest extent to the greatest extent the gasification of the water in the pipe network, solved the problem that causes because of bubble in cavitation erosion and the pipeline, and avoided the generation of instrument damaged phenomenon, increase the utilising efficiency of hot water, prolonged the life-span of superheated water pipeline equipment and instrument, brought direct economic benefit.
Description of drawings
The structural representation of the superheated water voltage-stabilizing system that is used for continuous annealing furnace that Fig. 1 provides for the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples, and certain following embodiment should not be construed as limitation of the present invention.
As shown in Figure 1, a kind of superheated water voltage-stabilizing system for continuous annealing furnace that it provides for the embodiment of the invention, the storage tank 16 that it comprises topping-up pump 14, be used for supplying water to topping-up pump 14, the water that is used for regulating storage tank 16 liquid levels are regulated injection tube 15, pressure controller 19, energy storage 13, and cooling tank 9.Energy storage 13 links to each other 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, links to each other by pipeline 6 between cooling tank 9 and the superheated water major cycle pipeline 2.Pressure controller 19 is for detection of the pressure of superheated water major cycle pipeline 2, and force value and the normal value of described detection compared, when the unlatching of the difference of detecting pressure value and normal value control topping-up pump 14 during greater than preset value.Be provided with trip valve 8 between cooling tank 9 and the pipeline 6.Energy storage 13 ingress are provided with trip valve 12.Cooling tank 9 ingress are provided with valve 11.Valve 11 and trip valve 12 are used for cutting off respectively energy storage 13 and cooling tank 9.The top of pipeline 6 is provided with Safety relief valve 7, is used for when the pipe network hypertonia, and safety is diffused.The ingress of storage tank 16 is provided with trip valve 17.Water is regulated to be provided with on the injection tube 15 and is regulated water injection self-acting valve 18.
This superheated water voltage-stabilizing system also comprises the water pipe 3 that is connected with superheated water major cycle pipeline 2.Be disposed with manual valve 5 and check valve 4 on the water pipe 3.Water pipe 3, manual valve 5, and check valve 4 be used for being full of water to closed circuit superheated water circulation line for the first time or replenishing after maintenance and a large amount of the leakage.In the present embodiment, energy storage 13 is gas-loaded formula energy storage.
The working process of this superheated water voltage-stabilizing system is as follows:
The superheated water that the flue gas of Mist heat recovering/superheated water interchanger 10 produces, be fed to user's points such as unit cleaning section through recycle pump 1, after heat is supplied with the 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, the users such as constantly absorption fume afterheat, and supply cleaning section put heat; When the unit change of production, the exhaust gas volumn of generation is in fluctuation;
Served as superheated water temperature that hot water heat exchanger 10 produces because of flue gas heat when very sufficient, the temperature of superheated water can raise fast, causes that overpressure improves, at this moment, safety pressure margin in the superheated water major cycle pipeline 2 can pass through pipeline 6, and through being delivered to storage in the energy storage 13 behind the cooling tank 9.Because energy storage 13 is by the rubber film equilibrium pressure in the tank, for protection energy storage 13 and respective line, before energy storage 13, set up cooling tank 9, superheated water enters energy storage 13 again after cooling tank 9 coolings;
When the pressure in the superheated water major cycle pipeline 2 has little pressure drop, can be by the safety pressure margin self-equilibrating of storage in the energy storage 13.The force value of the superheated water major cycle pipeline 2 that detects when pressure controller 19 and the difference of normal value are during greater than preset value, show that then the pressure energy that discharges in the energy storage 13 is inadequate, can't pass through energy storage 13 self-equilibratings, therefore control the unlatching of topping-up pump 14, be used for to 2 pressurizations of superheated water major cycle pipeline.Water in the topping-up pump 14 derives from storage tank 16.Liquidometer is set in storage tank 16 and valve 18 has linkage relationship, liquid level is crossed when low in detecting storage tank 16, and valve 18 is opened automatically, the soft water of annotating in the storage tank 16.Valve 17 is used for closing of storage tank 16.
Need to prove that those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technical scheme of the present invention, and do not break away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (3)

1. the superheated water voltage-stabilizing system that is used for continuous annealing furnace, it is characterized in that, it comprises topping-up pump, be used for the storage tank to described topping-up pump water supply, be used for regulating the water adjusting injection tube of described storage tank liquid level, pressure controller, energy storage, and cooling tank, described energy storage links to each other with described cooling tank respectively with topping-up pump, described cooling tank and superheated water major cycle pipeline connection, described pressure controller is for detection of the pressure of described superheated water major cycle pipeline, and force value and the normal value of described detection compared, when the unlatching of the difference of detecting pressure value and normal value control topping-up pump during greater than preset value.
2. superheated water voltage-stabilizing system as claimed in claim 1 is characterized in that, described superheated water voltage-stabilizing system also comprises the water pipe that is connected with described superheated water major cycle pipeline.
3. superheated water voltage-stabilizing system as claimed in claim 1 or 2 is characterized in that, described energy storage is gas-loaded formula energy storage.
CN201210580413.2A 2012-12-28 2012-12-28 Superheated water pressure stabilizing system for continuous annealing furnace Expired - Fee Related CN103045843B (en)

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

Applications Claiming Priority (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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CN103045843A true CN103045843A (en) 2013-04-17
CN103045843B CN103045843B (en) 2015-01-07

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Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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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