CN201756573U - Steam generator of annealing furnace - Google Patents
Steam generator of annealing furnace Download PDFInfo
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- CN201756573U CN201756573U CN2010202393375U CN201020239337U CN201756573U CN 201756573 U CN201756573 U CN 201756573U CN 2010202393375 U CN2010202393375 U CN 2010202393375U CN 201020239337 U CN201020239337 U CN 201020239337U CN 201756573 U CN201756573 U CN 201756573U
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Abstract
The utility model relates to the technical field of steam generator, in particular to a steam generator of an annealing furnace. The steam generator of the annealing furnace includes an electric heating device equipped with a stranded resistance wire, a built-in dry heating bladder, a PLC (programmable logic controller), a water adding device, a thermoelectric couple, and a steam distributor communicated with an inner chamber of a steam kettle. The steam generator of the annealing furnace can utilize the heat energy brought by the wire better, avoids water and electric energy wastes caused by overflow, improves the steam stability, simplifies the structure, is easy to operate, and can reduce costs of manufacture and maintenance.
Description
Technical field:
The utility model relates to the vapour generator technical field, relates in particular to a kind of steam generator of annealing furnace.
Background technology:
When wire rod is annealed in annealing furnace, at high temperature oxidized in order to prevent wire rod, adopt steam that wire rod is protected usually.The steam of annealing furnace is generally from the external electric vapour generator, perhaps from the enameling machine oven heat recovery steam generator.
External electric vapour generator commonly used comprises steam generating chamber and regulation of level water tank, the water level of electric heating steam generator is provided with the electric heating tube of certain power with upper/lower positions, be connected with two pipelines between steam generating chamber and the regulation of level water tank, one is communicated with underwater portion, and one is communicated with above water.Because the maintenance issues of regulation of level water tank is more, usually enough thermal insulation layers can not be set, the energy consumption of this electric heating steam generator is bigger.
Enameling machine oven heat recovery steam generator structure and electric heating steam generator commonly used are similar, and different is to have replaced electrically heated with the heat that absorbs baker waste discharge gas.The utility model people is to propose the anhydrous gland steam protector of a kind of annealing furnace in the Chinese utility model patent of " 200920059267.2 " at application number, it comprises built-in steam generator, built-in steam generator has been cancelled the regulation of level water tank, and built-in steam generator is installed in heat-insulating property preferably in the annealing furnace body of heater, solved energy-conservation and reliability problems preferably, but some difficult problems also occurred in control: 1) steam in the built-in steam generator is communicated with atmosphere by the annealing furnace boiler tube, resistance is still little though boiler tube has longer path, so in built-in steam generator, can not set up bigger vapor pressure, saturated-steam temperature can only reach about 100.5 degree, adopt the method for control saturated-steam temperature just to need very high-precision temperature control, though adopt the utility model people to control the control accuracy that can reach required for the control method of a kind of thereof using PID algorithm of proposing in the Chinese invention patent of " 200910038926.9 " at application number, but find during secular practice is used still to be subjected to the influence that drift takes place the thermopair precision inadequately, should not in industrial production, use; 2) built-in steam generator is installed in the annealing furnace zone of having finished heating anneal corresponding to wire rod and need cool, built-in steam generator can absorb the wire rod heat to help the wire rod cooling, built-in steam generator also can reduce the electrically heated power consumption simultaneously, therefore if can not adopt the method for control saturated-steam temperature, and adopt the method that adds heat of setting, change the interference that brings with production status with being subjected to absorbing the wire rod heat; 3) control that adds discharge toward built-in steam generator does not have the scientific and reliable method, guarantee that the water level in the built-in steam generator also needs scientific and reliable overflow detection method.
It approximately is 1～6 kilogram/hour that the quantity of steam that annealing furnace needs is calculated by weight, and just needs and can add discharge 1～6 liter/hour flow range inner control.The method of adding liquid usually is to adopt pump, especially can adopt the frequency transformer driving pump to realize when dominant discharge.Vane pump commonly used, the rated flow of pumps such as toothed gear pump is lower than the scope that this flow has just entered volume pump all more than 150 liters/hour, but volume pump cost height not only can't adapt to long-term operation under industrial environment.
The utility model people is at a kind of annealing furnace anhydrous gland steam protector of application number for proposing in the Chinese utility model patent of " 200920059267.2 "; must keep certain water level in its built-in steam generator inner bag, therefore must control has certain spillway discharge.The size of spillway discharge depends on and adds discharge and add heat, adding discharge can control, but add heat except that the controlled heating source of electrothermal tube, also have from the heat that annealing furnace boiler tube biography is come and wire rod is come from the high-temperature zone band, this part origin of heat particularly wire rod band heat of coming should utilize, but it is can not expect and uncontrollable.For this reason, the spillway discharge proofing unit must be set, the utility model people has proposed following spillway discharge proofing unit:
This spillway discharge proofing unit is provided with a measuring cup and accepts the effusive liquid of upflow tube.Measuring cup bottom connects one and goes up bend pipe, and last bend pipe import is connected bottom measuring cup, leads to outlet downwards after being bent-up to crankle point, and outlet must be lower than import, and last crankle point is not higher than the measuring cup rim of a cup, equals the liquid level upper limit of measuring cup.After overflow liquid was injected measuring cup, liquid level constantly raise in the measuring cup, and the liquid level in the last bend pipe also constantly raises.When the liquid level in the last bend pipe reaches crankle point, because the liquid level in the last bend pipe can not rise synchronously with the liquid level in the measuring cup, though two liquid levels have born same barometric point, the difference of altitude of two liquid levels has formed pressure difference, makes the flow direction outlet in the bend pipe.Because the outlet of last bend pipe is lower than the import that is positioned at the measuring cup bottom, and the caliber of putting outlet from last crankle is less, the surface tension of liquid in pipe is enough to stop air breakthrough liquid in pipe to flow to the crankle point from outlet, so in a single day upward the interior liquid level of bend pipe is crossed flex point and will be moved on to winding pipe exit fast, liquid in the measuring cup on passing through under the pressure difference effect that the liquid level difference forms bend pipe from winding pipe exit flow out, liquid level in measuring cup is reduced to bend pipe ingress, last bend pipe import forms new liquid level after entering air, obtains balance again and stops outflow after the liquid level difference disappears.So, when overflow liquid is filled measuring cup, liquid all emptyings fast in the measuring cup, and accept next cup again, as long as calculate the timed interval that measuring cup is filled the effusive volume in back and filled at every turn at every turn, just can detect the flow of overflow.Measuring cup by sky to full and can be used to drive the closed and disconnected of a switch by full changes in weight to sky, switch closure and the needed power of disconnection and error thereof are if be positioned at the weight difference scope, can guarantee that PLC is from timed interval that switch obtains filling accurately substantially at every turn, the power error required as if switch closure and disconnection is very little, then can obtain the timed interval of at every turn filling accurately.
Through overtesting, more than device can make the information of PLC acquisition spillway discharge, but it is higher to make accuracy requirement, and real-time is not strong.Have to during practical application make that to add discharge bigger than normal, keep bigger spillway discharge, the heat of avoiding the wire rod band to come makes water level reduce more for a long time, causes the accident of dryouting.The result who does like this is that when the overflow water outflow caused the waste of water, overflow water had also been taken away some heats, causes waste of electric energy.
The utility model content:
The purpose of this utility model is at the deficiencies in the prior art, a kind of heat that can utilize the wire rod band to come better is provided, water and the waste of energy of avoiding overflow to bring, improve the stability of steam, simplified construction, easy handling, the steam generator of annealing furnace of reduction manufacturing cost and maintenance cost.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of steam generator of annealing furnace, it comprises the electric heater unit that is provided with stranded resistance wire, it also comprises built-in dry combustion method inner bag, PLC controller, priming apparatus, thermopair, and the vapour distributor that is communicated with the steam oven inner room;
Described built-in dry combustion method inner bag comprises the dry combustion method pot and is covered on the Stainless steel pot cover at dry combustion method pot top, dry combustion method pot and Stainless steel pot cover form the internal bladder cavity of built-in dry combustion method inner bag, the dry combustion method pot bottom is provided with conductive sole plate, and the conductive sole plate bottom is provided with the heat conduction bending clamp that is used to wrap up annealing boiler tube row;
Described priming apparatus comprises two-position three way magnetic valve, tubulose measuring cup, and the permanent liquid level water tank that is communicated with the water source; The common interface of two-position three way magnetic valve up, and common interface is equipped with described tubulose measuring cup; The normal open interface of two-position three way magnetic valve is communicated with the bottom of permanent liquid level water tank, and the normal off interface of two-position three way magnetic valve is communicated with the internal bladder cavity of built-in dry combustion method inner bag by water inlet pipe mouth;
The stranded resistance wire of described electric heater unit is wound in the outer wall of dry combustion method pot, the left and right sides of dry combustion method pot is equipped with described thermopair, vapour distributor is communicated with the internal bladder cavity of built-in dry combustion method inner bag, and internal bladder cavity is provided with the water-accepting board that is obliquely installed, and water-accepting board is positioned at the water inlet pipe mouth below; PLC controller control linkage electric heater unit, thermopair and priming apparatus.
Further, described dry combustion method pot is iron pan or aluminum pot.
Further, described priming apparatus comprises that also pipe adds bend pipe under water, and the magnetic valve arrangement for adjusting height of band scale; Described permanent liquid level water tank is provided with float(ing)valve water level control unit; Bend pipe connects water inlet pipe mouth to the normal off interface of two-position three way magnetic valve by adding under water; The magnetic valve arrangement for adjusting height comprises magnetic valve mounting seat, altitude mixture control screw, base plate lock screw, two-position three way magnetic valve is connected with the magnetic valve mounting seat by the base plate lock screw, and the altitude mixture control screw passes two-position three way magnetic valve and the magnetic valve mounting seat touches.
Further, the dry combustion method pot of described built-in dry combustion method inner bag is provided with flange, be evenly equipped with screw hole on the flange, be provided with gasket between flange and the Stainless steel pot cover, the position of the corresponding gasket of Stainless steel pot cover is provided with pressure strip, and Stainless steel pot cover passes pressure strip by forcing screw and compresses Stainless steel pot cover and gasket; The dry combustion method outer wall of wall is enclosed with insulation layer.
Further, the stranded resistance wire of described electric heater unit is wound in the periphery of described insulation layer, and stranded resistance wire is with the insulation porcelain bead.
Further, described dry combustion method pot tilts to place, and thermopair is arranged at the position of dry combustion method pot near the bottom of a pan.
Further, described vapour distributor comprises the steam inlet tube that equates with annealing boiler tube row's boiler tube quantity, and the steam that is opened in every boiler tube corresponding position enters the hole, the lower end vertical weld of steam inlet tube is connected to steam and enters the hole, the flange of dry combustion method pot is inserted in the upper end of steam inlet tube, and the upper end of steam inlet tube penetrates internal bladder cavity; The upper end of steam inlet tube is provided with sealing-ring or gasket, and sealing-ring or gasket are provided with pressure strip, and pressure strip passes the flange that sealing-ring or gasket are connected in the dry combustion method pot by forcing screw; Correspondence position at Stainless steel pot cover is provided with the steam distribution cavity, and the steam distribution cavity is communicated with the steam oven inner room with the endoporus top of steam inlet tube.
Further, be positioned at the side of built-in dry combustion method inner bag away from annealing furnace high temperature annealing district, the corresponding position of heat conduction bending clamp is provided with phase-transition heat-preserving district heating unit.
Further, between priming apparatus and built-in dry combustion method inner bag, be provided with enamel-cover roasting oven waste gas heating device; Enamel-cover roasting oven waste gas heating device comprises second water inlet pipe mouth, is installed on afterheat steam dry combustion method pot and waste heat Stainless steel pot cover in the enamel-cover roasting oven waste discharge air channel, is provided with gasket between the flange of afterheat steam dry combustion method pot and the waste heat Stainless steel pot cover; The pot mouth of afterheat steam dry combustion method pot is installed to the side, and the bottom side plate of afterheat steam dry combustion method pot is low inside and high outside shape; Second water inlet pipe mouth is inserted into top near the afterheat steam dry combustion method pot the bottom of a pan from the waste heat Stainless steel pot cover, and the below of second water inlet pipe mouth is provided with second water-accepting board; The bottom of waste heat Stainless steel pot cover is communicated with the internal bladder cavity of built-in dry combustion method inner bag by water inlet pipe mouth, and the periphery bag of water inlet pipe mouth is provided with muff; Described priming apparatus is communicated with second water inlet pipe mouth.
The utility model beneficial effect is:
A kind of steam generator of annealing furnace described in the utility model, it comprises the electric heater unit that is provided with stranded resistance wire, built-in dry combustion method inner bag, PLC controller, priming apparatus, thermopair, and the vapour distributor that is communicated with the steam oven inner room; Built-in dry combustion method inner bag receives the heat that annealing boiler tube row is transmitted, and takes away the heat of built-in dry combustion method inner bag during from the liquid water evaporation of internal bladder cavity that water inlet pipe mouth enters built-in dry combustion method inner bag; When the annealing boiler tube was arranged the shortage of heat that transmits, the discharge that adds of priming apparatus was set at the minimum value that meets the demands, and controls built-in dry combustion method inner bag temperature a little more than saturated-steam temperature by electric heater unit and thermopair; When the heat that annealing boiler tube row is transmitted exceeded demand, electric heater unit stopped heating, controlled the temperature of built-in dry combustion method inner bag temperature to needs by the discharge that adds of control priming apparatus; Vapour distributor makes the steam of internal bladder cavity lead to many annealing furnace boiler tubes equably; The two-position three way magnetic valve of PLC controller control priming apparatus is pressed certain frequency and is carried out, and the water injection tubulose measuring cup with permanent liquid level water tank circulates the water in the tubulose measuring cup again by the internal bladder cavity that water inlet pipe mouth injects built-in dry combustion method inner bag; Adding discharge can regulate by three kinds of methods of height that adjusting adds the frequency of water cycle, the two-position three way magnetic valve quantity that comes into operation and the permanent relatively liquid level water tank of two-position three way magnetic valve.Adopt the steam generator of annealing furnace of said structure, because the dry combustion method pot the bottom of a pan is approached the dry combustion method pot temperature by carrying out heat transmission preferably between conductive sole plate and heat conduction bending clamp and the annealing boiler tube row by the annealing boiler tube row temperature of heat conduction bending clamp parcel; When wire rod comes out to enter this regional annealing boiler tube row from annealing furnace high temperature annealing district, the high temperature wire rod can pass to the dry combustion method pot fast by the heat that steam passes to the annealing furnace boiler tube, not only can reduce this regional envrionment temperature, accelerate to have finished the cooling of annealing wire rod, also can reduce and produce the electric energy that steam needs, reach energy-conservation purpose, more obvious when the production wire gauge is big especially; Adopt the dry combustion method pot, after particularly the dry combustion method pot is provided with water-accepting board, significantly reduced the destruction of expanding with heat and contract with cold, make dry combustion method steam become possibility inner bag; Because the thermal conductivity of dry combustion method pot (as iron pan or aluminum pot) is much higher than stainless steel, thermal expansivity is significantly smaller than stainless steel, and wall thickness is bigger, so the thermal stresses that liquid cold water causes is less, is difficult for producing be full of cracks; Water-accepting board also can bear bigger cold shock for it, and cold shock point is disperseed and the position is fixing, also can protect the dry combustion method pot seepage that do not chap well; After adopting the dry combustion method inner bag, temperature control requirement reduces greatly, only need be higher than saturated-steam temperature and get final product; Temperature slightly height can not increase power consumption yet, stays in the inner bag because will add the unnecessary heat insulation layer in water evaporation back of discharge, and how many heats the rising of vapor temperature itself do not consume, and vapor temperature still will raise in the annealing furnace boiler tube; After in the employing being built-in dry combustion method inner bag, without any need for overflow, not only reduced the waste of power and water energy, also made control become simpler, steam flow just is equal to and has added discharge; The structure control of employing two-position three way magnetic valve and tubulose measuring cup adds discharge and has higher accuracy and reliability, and is simple in structure, easy to maintenance.
Description of drawings:
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is that the A of Fig. 1 is to structural representation;
Fig. 3 is the C portion enlarged diagram of Fig. 2;
Fig. 4 is the B portion enlarged diagram of Fig. 2;
Fig. 5 is the structural representation of the utility model embodiment two;
Fig. 6 is the structural representation of the utility model embodiment three;
Fig. 7 is the structural representation of the utility model embodiment four.
Embodiment:
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one:
As shown in Figures 1 to 4, a kind of steam generator of annealing furnace, it comprises the electric heater unit 2 that is provided with stranded resistance wire 21, built-in dry combustion method inner bag 1, PLC controller, priming apparatus 3, thermopair 22, and the vapour distributor 4 that is communicated with the steam oven inner room; Described built-in dry combustion method inner bag 1 comprises dry combustion method pot 10 and is covered on the Stainless steel pot cover 11 at dry combustion method pot 10 tops, dry combustion method pot 10 and Stainless steel pot cover 11 form the internal bladder cavity 12 of built-in dry combustion method inner bag 1, dry combustion method pot 10 bottoms are provided with conductive sole plate 13, and conductive sole plate 13 bottoms are provided with the heat conduction bending clamp 14 that is used to wrap up annealing boiler tube row 20; Described priming apparatus 3 comprises two-position three way magnetic valve 31, tubulose measuring cup 30, and the permanent liquid level water tank 5 that is communicated with the water source; The common interface of two-position three way magnetic valve 31 up, and common interface is equipped with described tubulose measuring cup 30; The normal open interface of two-position three way magnetic valve 31 is communicated with the bottom of permanent liquid level water tank 5, and the normal off interface of two-position three way magnetic valve 31 is communicated with the internal bladder cavity 12 of built-in dry combustion method inner bag 1 by water inlet pipe mouth 50; The stranded resistance wire 21 of described electric heater unit 2 is wound in the outer wall of dry combustion method pot 10, the left and right sides of dry combustion method pot 10 is equipped with described thermopair 22, vapour distributor 4 is communicated with the internal bladder cavity 12 of built-in dry combustion method inner bag 1, internal bladder cavity 12 is provided with the water-accepting board 15 that is obliquely installed, and water-accepting board 15 is positioned at water inlet pipe mouth 50 belows; PLC controller control linkage electric heater unit 2, thermopair 22 and priming apparatus 3.Dry combustion method pot 10 described in the utility model is iron pan or aluminum pot.Adding discharge can regulate by three kinds of methods of height that adjusting adds the frequency of water cycle, two-position three way magnetic valve 31 quantity that come into operation and the permanent relatively liquid level water tank 5 of two-position three way magnetic valve 31 magnetic valves.
As preferred implementation, in the present embodiment one, the dry combustion method pot 10 of described built-in dry combustion method inner bag 1 is provided with flange, be evenly equipped with screw hole on the flange, be provided with gasket 16 between flange and the Stainless steel pot cover 11, the position of Stainless steel pot cover 11 corresponding gaskets 16 is provided with pressure strip 17, and Stainless steel pot cover 11 passes pressure strip 17 by forcing screw and compresses Stainless steel pot cover 11 and gasket 16; Dry combustion method pot 10 outer walls are enclosed with insulation layer 18.Heat conduction bending clamp 14 can extend back forward, and the annealing boiler tube row 20 that heat conduction bending clamp 14 is wrapping to all can pass to dry combustion method pot 10 with the heat of high temperature wire rod, all can quicken the cooling of high temperature wire rod simultaneously; The stranded resistance wire 21 of described electric heater unit 2 is wound in the periphery of described insulation layer 18, and stranded resistance wire 21 is with the insulation porcelain bead, the heating of can switching under PLC control of stranded resistance wire 21; If dry combustion method pot 10 tilts to place, promptly dry combustion method pot 10 tilts to place with annealing boiler tube row 20, and thermopair 22 is arranged at the position of dry combustion method pot 10 near the bottom of a pan, and concrete, thermopair 22 is arranged on the lowest part of dry combustion method pot 10 ponding positions; Water-accepting board 15 tilts to place current direction dry combustion method pot 10 the bottom of a pan higher positions that make from water inlet pipe mouth 50, and stops cold water directly to stimulate the bottom of a pan.
As preferred implementation, in the present embodiment one, described vapour distributor 4 comprises the steam inlet tube 41 that equates with annealing boiler tube row 20 boiler tube 201 quantity, and the steam that is opened in every boiler tube 201 corresponding positions enters hole 42, the lower end vertical weld of steam inlet tube 41 is connected to steam and enters hole 42, the flange of dry combustion method pot 10 is inserted in the upper end of steam inlet tube 41, and expose 10～30 millimeters, make the upper end of steam inlet tube 41 penetrate internal bladder cavity 12, the upper end of steam inlet tube 41 is provided with sealing-ring or gasket 16, sealing-ring or gasket 16 are provided with pressure strip 17, and pressure strip 17 passes the flange that sealing-ring or gasket 16 are connected in dry combustion method pot 10 by forcing screw; Correspondence position at Stainless steel pot cover 11 is provided with the steam distribution cavity, and the steam distribution cavity is communicated with the steam oven inner room with the endoporus top of steam inlet tube 41.
As preferred implementation, in the present embodiment one, described priming apparatus 3 comprises that also pipe adds bend pipe 32 under water, and the magnetic valve arrangement for adjusting height of band scale 33; Described permanent liquid level water tank 5 is provided with float(ing)valve water level control unit 51; Bend pipe 32 connects water inlet pipe mouth 50 to the normal off interface of two-position three way magnetic valve 31 by adding under water; The magnetic valve arrangement for adjusting height comprises magnetic valve mounting seat 34, altitude mixture control screw 35, base plate lock screw 36, two-position three way magnetic valve 31 is connected with magnetic valve mounting seat 34 by base plate lock screw 36, and altitude mixture control screw 35 passes two-position three way magnetic valve 31 and touches with magnetic valve mounting seat 34.Two-position three way magnetic valve 31 no powers connect mouth often and are communicated with common interface, and the water in the permanent liquid level water tank 5 flows into tubulose measuring cups 30 by two-position three way magnetic valve 31, makes tubulose measuring cup 30 liquid levels identical with permanent liquid level water tank 5 liquid levels; Switch on often that the disconnecting mouth is communicated with common interface, the water in the tubulose measuring cup 30 all flows into built-in dry combustion method inner bag 1 by two-position three way magnetic valve 31; When two above two-position three way magnetic valves 31 are arranged, can adopt the one positive one anti-mode that is cross-linked, the break-make of two-position three way magnetic valve 31 can adopt unified control, during two-position three way magnetic valve 31 no powers, the two-position three way magnetic valve 31 normal open interfaces that just connecing are communicated with common interface, water filling in tubulose measuring cup 30, the two-position three way magnetic valve 31 normal off interfaces of reversal connection are communicated with common interface, water in the tubulose measuring cup 30 is emitted, during two-position three way magnetic valve 31 energisings, the two-position three way magnetic valve 31 normal off interfaces that just connecing are communicated with common interface, water in the tubulose measuring cup 30 is emitted, the two-position three way magnetic valve 31 normal open interfaces of reversal connection are communicated with water filling in tubulose measuring cup 30 with common interface; Two-position three way magnetic valve 31 is installed on the magnetic valve arrangement for adjusting height, the high highly more then tubulose of two-position three way magnetic valve 31 measuring cup 30 moisture storage capacitys are few more, the water that injects built-in dry combustion method vapour generator after 31 1 actuation cycle of two-position three way magnetic valve is few more, otherwise then many more; Dress volume of water when tubulose measuring cup 30 water levels in the time of can indicating respective heights on the scale 33 and permanent liquid level water tank 5 highly maintain an equal level;
A kind of steam generator of annealing furnace described in the utility model, when steam inlet tube 41 is positioned at 6 one sides away from the high temperature annealing district, and dry combustion method pot 10 is from the high temperature annealing district 6 when far away, the heat in close high temperature annealing district 6 difficulty is delivered to dry combustion method pot 10, and entering steam that annealing furnace boiler tube 201 flows to high temperature annealing district 6 from steam inlet tube 41 has passed through preheating earlier and has just entered high temperature annealing district 6, so it is can reduce the calorific loss in high temperature annealing district 6, but slightly poor to the cooling performance of wire rod.A kind of steam generator of annealing furnace described in the utility model, its principle of work and control method: it may further comprise the steps:
Steps A, the parameter of setting PLC controller, described parameter comprises built-in dry combustion method inner bag design temperature, adds the discharge master mode, setting adds discharge, magnetic valve maximum frequency, magnetic valve minimum frequency, magnetic valve group number, every group of magnetic valve number, measuring cup dress volume of water, wherein:
Built-in dry combustion method inner bag design temperature is represented the controlled target of the pot wall temperature that the thermopair 22 of dry combustion method pot 10 left and right sides setting records, the controlled target of promptly built-in dry combustion method inner bag actual temperature;
Adding the discharge master mode, to represent to add discharge be manual mode or automatic mode;
Setting adds discharge and represents the discharge that adds set; Under manual mode, the execution that the PLC controller is carried out adds discharge=setting and adds discharge; Under automatic mode, surpass the amplitude of built-in dry combustion method inner bag design temperature according to built-in dry combustion method inner bag actual temperature, calculate with pid algorithm and add the discharge increment, the execution that the PLC controller is carried out adds discharge=setting and adds discharge+add discharge increment;
The magnetic valve maximum frequency is represented the two-position three way magnetic valve water cycle number of times of adding most hourly;
The magnetic valve minimum frequency is represented the two-position three way magnetic valve minimum water cycle number of times that adds hourly;
Magnetic valve group numerical table shows the two-position three way magnetic valve group number that PLC controller output point can be controlled respectively; The PLC controller changes and adds discharge by changing two-position three way magnetic valve break-make frequency in same group number, when the break-make frequency can not be reached by the restriction of magnetic valve minimum frequency and magnetic valve maximum frequency to change to add discharge and requires, can change the two-position three way magnetic valve group number that comes into operation and change and add discharge, two-position three way magnetic valve on the same group can not use different break-make frequencies;
Every group of magnetic valve number represented the two-position three way magnetic valve number of each output point control of PLC controller;
When representing that tubulose measuring cup water level maintains an equal level with permanent liquid level water storage tank water level, measuring cup dress volume of water adorns the volume of water in the tubulose measuring cup;
Step B, when the PLC controller receive begin to provide steam instruction after, if add the discharge master mode is manual mode, the PLC controller according to about the minimum temperature that records of two thermopairs 22 be the calculating that benchmark carries out pid algorithm with built-in dry combustion method inner bag design temperature; When temperature is low the calculation result of pid algorithm is converted into and adds heat and control electric heater unit 2, when temperature is high electric heater unit 2 add heat=0, carry out in any case and add discharge=setting and add discharge;
Simultaneously, the PLC controller calculates and adds the discharge adjustable extent:
Minimum adds discharge=list group magnetic valve minimum and adds discharge=magnetic valve minimum frequency * every group of magnetic valve number * measuring cup dress volume of water;
Single group magnetic valve is discharge=magnetic valve maximum frequency * every group of magnetic valve number * measuring cup dress volume of water the most greatly;
Discharge=magnetic valve group number * list is organized magnetic valve discharge=magnetic valve group number * magnetic valve maximum frequency * every group of magnetic valve number * measuring cup dress volume of water the most greatly the most greatly;
Simultaneously, add discharge and add discharge less than minimum if carry out, the order of PLC controller is carried out and is added discharge and equal minimum and add heat flux; Add discharge greater than discharge the most greatly if carry out, then the order of PLC controller is carried out and is added discharge and equal discharge the most greatly; Output alarm when exceeding the situation of variable range more than the appearance, prompting manual regulation measuring cup dress volume of water is also imported new measuring cup dress volume of water;
Simultaneously, if execution adds discharge and adds discharge * magnetic valve group number more than or equal to single group magnetic valve minimum, then magnetic valve break-make frequency=execution adds discharge/magnetic valve group number/every group of magnetic valve number/measuring cup dress volume of water, and the PLC controller is by the break-make of these all magnetic valves of break-make frequency control; If execution adds discharge and adds discharge * magnetic valve group number less than single group magnetic valve minimum, then should reduce by one group of magnetic valve, if execution adds discharge and adds discharge * (magnetic valve group number-1) more than or equal to single group magnetic valve minimum, then magnetic valve break-make frequency=execution adds discharge/(magnetic valve group number-1)/every group of magnetic valve number/measuring cup dress volume of water, and the PLC controller is by the break-make of this break-make frequency control magnetic valve group number-1 group magnetic valve; So till only remaining one group of magnetic valve;
Step C, when the PLC controller receive begin to provide steam instruction after, if add the discharge master mode is automatic mode, the PLC controller according to about the medial temperature that records of two thermopairs 22 be the calculating that benchmark carries out pid algorithm with built-in dry combustion method inner bag design temperature; When temperature is low the calculation result of pid algorithm is converted into and adds heat and control electric heater unit 2, add discharge=setting and add discharge and carry out; When temperature is high the calculation result of pid algorithm is converted into and adds the discharge increment, make to carry out to add discharge=setting and add discharge+add the discharge increment, and electric heater unit 2 add heat=0;
Simultaneously, the PLC controller calculates and adds the discharge adjustable extent:
Minimum adds discharge=list group magnetic valve minimum and adds discharge=magnetic valve minimum frequency * every group of magnetic valve number * measuring cup dress volume of water;
Single group magnetic valve is discharge=magnetic valve maximum frequency * every group of magnetic valve number * measuring cup dress volume of water the most greatly;
Discharge=magnetic valve group number * list is organized magnetic valve discharge=magnetic valve group number * magnetic valve maximum frequency * every group of magnetic valve number * measuring cup dress volume of water the most greatly the most greatly;
Simultaneously, add discharge and add discharge less than minimum if carry out, the order of PLC controller is carried out and is added discharge and equal minimum and add heat flux; Add discharge greater than discharge the most greatly if carry out, then the order of PLC controller is carried out and is added discharge and equal discharge the most greatly; Output alarm when exceeding the situation of variable range more than the appearance, prompting manual regulation measuring cup dress volume of water is also imported new measuring cup dress volume of water;
Simultaneously, if execution adds discharge and adds discharge * magnetic valve group number more than or equal to single group magnetic valve minimum, then magnetic valve break-make frequency=execution adds discharge/magnetic valve group number/every group of magnetic valve number/measuring cup dress volume of water, and the PLC controller is by the break-make of these all magnetic valves of break-make frequency control; If execution adds discharge and adds discharge * magnetic valve group number less than single group magnetic valve minimum, then should reduce by one group of magnetic valve, if execution adds discharge and adds discharge * (magnetic valve group number-1) more than or equal to single group magnetic valve minimum, then magnetic valve break-make frequency=execution adds discharge/(magnetic valve group number-1)/every group of magnetic valve number/measuring cup dress volume of water, and the PLC controller is by the break-make of this break-make frequency control magnetic valve group number-1 group magnetic valve; So till only remaining one group of magnetic valve.
Embodiment two:
As shown in Figure 5, be with the difference of embodiment one, present embodiment two described a kind of steam generator of annealing furnace, its steam inlet tube 41 is arranged on the side of dry combustion method pot 10 near high temperature annealing district 6, make dry combustion method pot 10 near high temperature annealing district 6, this structure is applicable to that the cooling performance of high temperature wire rod is the situation of main focus.Dry combustion method pot 10 is arranged on high temperature annealing district 6 and exports the heat that a side can utilize wire rod to come from the high-temperature zone band near annealing furnaces and produce steam, and can help the wire rod cooling.But what need most steam protection is annealing furnace import one side, has to strengthen quantity of steam when vapour source is positioned at outlet one side and guarantees that ingress is effectively protected.For most of wire rods, more from the heat that the high-temperature zone band is come, and need better cooling effect, dry combustion method pot 10 is arranged on high temperature annealing district 6 and exports a side near annealing furnaces the advantages outweigh the disadvantages.For thinner wire rod, because the volume or weight that the unit time passes through is less, the band heat of coming is less, and cooling is also than being easier to, and dry combustion method pot 10 is arranged on high temperature annealing district 6 and just becomes near annealing furnace import one sides that the advantages outweigh the disadvantages.
Embodiment three:
As shown in Figure 6, be with the difference of embodiment one, present embodiment three described a kind of steam generator of annealing furnace also are being positioned at the side of built-in dry combustion method inner bag 1 away from annealing furnace high temperature annealing district 6, and the corresponding position of heat conduction bending clamp 14 is provided with phase-transition heat-preserving district heating unit 7.When this structure is used to contain black metal wire material annealing, stronger means control phase-transition heat-preserving district temperature is arranged, when if the annealing boiler tube is arranged 20 shortages of heat, can add thermogenesis steam and make dry combustion method pot 10 temperature remain on temperature a little less than transformation temperature, the insulation heating zone is set on the pipe row after inner bag again can guarantees better to be in transformation temperature by annealing furnace boiler tube 201 temperature of heat conduction bending clamp 14 parcels, the length sufficiently long of heat conduction bending clamp 14 parcels can guarantee that wire rod has time enough to carry out phase transformation at a slow speed; If the annealing boiler tube is arranged 20 heats when too many, can adding greatly, discharge remains on than the low more temperature of transformation temperature dry combustion method pot 10 temperature, more effectively make wire rod be cooled fast to transformation temperature, and the insulation of the transformation temperature after making it heating zone is controlled, this existing annealing furnace can't be realized, also is that existing annealing furnace can't be to carrying out the annealed reason than blister copper Baogang wire rod.
Embodiment four:
As shown in Figure 7, the structure applications of present embodiment four described a kind of steam generator of annealing furnace is in enamelling machine.Be that with the difference of embodiment one when being applied to enamelling machine, for saves energy further, present embodiment four described a kind of steam generator of annealing furnace are provided with enamel-cover roasting oven waste gas heating device 8 between priming apparatus 3 and built-in dry combustion method inner bag 1; Enamel-cover roasting oven waste gas heating device 8 comprises second water inlet pipe mouth 84, is installed on afterheat steam dry combustion method pot 80 and waste heat Stainless steel pot cover 81 in the enamel-cover roasting oven waste discharge air channel, is provided with gasket 16 between the flange of afterheat steam dry combustion method pot 80 and the waste heat Stainless steel pot cover 81; The pot mouth of afterheat steam dry combustion method pot 80 is installed to the side, and the bottom side plate of afterheat steam dry combustion method pot 80 is low inside and high outside shape; Second water inlet pipe mouth 84 is inserted into top near afterheat steam dry combustion method pot 80 thes bottom of a pan from waste heat Stainless steel pot cover 81, and the below of second water inlet pipe mouth 84 is provided with second water-accepting board 82; The bottom of waste heat Stainless steel pot cover 81 is by the internal bladder cavity 12 of the built-in dry combustion method inner bag 1 of water inlet pipe mouth 50 connections, and the periphery bag of water inlet pipe mouth 50 is provided with muff 83; Described priming apparatus 3 is communicated with second water inlet pipe mouth 84.Liquid water is heated and produces steam under the heat effect of waste gas residual heat, formed ponding when steam that produces and heat are not enough, flow into the import of leading to internal bladder cavity 12 from the outlet that is positioned at waste heat Stainless steel pot cover 81 bottoms along water inlet pipe mouth 50, curved equivalance aqua region down must not be arranged in the way, and water inlet pipe mouth 50 peripheries are provided with muff 83; Built-in dry combustion method inner bag 1 temperature is higher than saturated-steam temperature, and enamel-cover roasting oven waste gas heating device 8 unevaporated surplus water all are converted into steam, guarantees that steam flow equals to add discharge.Because the temperature and the flow of enamel-cover roasting oven waste gas all change in process of production, the heat instability that produces steam can be provided, differ at enamel-cover roasting oven waste gas heating device 8 and all evaporate surely so set the water that adds discharge; The utility model all leads to built-in dry combustion method inner bag 1 with steam in the enamel-cover roasting oven waste gas heating device 8 and unevaporated water, unevaporated liquid water stream can guarantee whole evaporations behind built-in dry combustion method inner bag 1, so both utilized the waste heat of enamel-cover roasting oven, guaranteed the stability of steam again.Among Fig. 7, the wavy line arrow is represented the flow direction of waste gas.
The above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (9)
1. steam generator of annealing furnace, it comprises the electric heater unit (2) that is provided with stranded resistance wire (21), it is characterized in that: it also comprises built-in dry combustion method inner bag (1), PLC controller, priming apparatus (3), thermopair (22), and the vapour distributor (4) that is communicated with the steam oven inner room;
Described built-in dry combustion method inner bag (1) comprises dry combustion method pot (10) and is covered on the Stainless steel pot cover (11) at dry combustion method pot (10) top, dry combustion method pot (10) and Stainless steel pot cover (11) form the internal bladder cavity (12) of built-in dry combustion method inner bag (1), dry combustion method pot (10) bottom is provided with conductive sole plate (13), and conductive sole plate (13) bottom is provided with the heat conduction bending clamp (14) that is used for parcel annealing boiler tube row (20);
Described priming apparatus (3) comprises two-position three way magnetic valve (31), tubulose measuring cup (30), and the permanent liquid level water tank (5) that is communicated with the water source; The common interface of two-position three way magnetic valve (31) up, and common interface is equipped with described tubulose measuring cup (30); The normal open interface of two-position three way magnetic valve (31) is communicated with the bottom of permanent liquid level water tank (5), and the normal off interface of two-position three way magnetic valve (31) is communicated with the internal bladder cavity (12) of built-in dry combustion method inner bag (1) by water inlet pipe mouth (50);
The stranded resistance wire (21) of described electric heater unit (2) is wound in the outer wall of dry combustion method pot (10), the left and right sides of dry combustion method pot (10) is equipped with described thermopair (22), vapour distributor (4) is communicated with the internal bladder cavity (12) of built-in dry combustion method inner bag (1), internal bladder cavity (12) is provided with the water-accepting board (15) that is obliquely installed, and water-accepting board (15) is positioned at water inlet pipe mouth (50) below; PLC controller control linkage electric heater unit (2), thermopair (22) and priming apparatus (3).
2. a kind of steam generator of annealing furnace according to claim 1 is characterized in that: described dry combustion method pot (10) is iron pan or aluminum pot.
3. a kind of steam generator of annealing furnace according to claim 1 is characterized in that: described priming apparatus (3) comprises that also pipe adds bend pipe (32) under water, and the magnetic valve arrangement for adjusting height of band scale (33); Described permanent liquid level water tank (5) is provided with float(ing)valve water level control unit (51); Bend pipe (32) connects water inlet pipe mouth (50) to the normal off interface of two-position three way magnetic valve (31) by adding under water; The magnetic valve arrangement for adjusting height comprises magnetic valve mounting seat (34), altitude mixture control screw (35), base plate lock screw (36), two-position three way magnetic valve (31) is connected with magnetic valve mounting seat (34) by base plate lock screw (36), and altitude mixture control screw (35) passes two-position three way magnetic valve (31) and touches with magnetic valve mounting seat (34).
4. a kind of steam generator of annealing furnace according to claim 1, it is characterized in that: the dry combustion method pot (10) of described built-in dry combustion method inner bag (1) is provided with flange, be evenly equipped with screw hole on the flange, be provided with gasket (16) between flange and the Stainless steel pot cover (11), the position of the corresponding gasket of Stainless steel pot cover (11) (16) is provided with pressure strip (17), and Stainless steel pot cover (11) passes pressure strip (17) by forcing screw and compresses Stainless steel pot cover (11) and gasket (16); Dry combustion method pot (10) outer wall is enclosed with insulation layer (18).
5. a kind of steam generator of annealing furnace according to claim 4 is characterized in that: the stranded resistance wire (21) of described electric heater unit (2) is wound in the periphery of described insulation layer (18), and stranded resistance wire (21) is with the insulation porcelain bead.
6. a kind of steam generator of annealing furnace according to claim 1 is characterized in that: described dry combustion method pot (10) tilts to place, and thermopair (22) is arranged at the position of dry combustion method pot (10) near the bottom of a pan.
7. a kind of steam generator of annealing furnace according to claim 4, it is characterized in that: described vapour distributor (4) comprises the steam inlet tube (41) that equates with annealing boiler tube row's (20) boiler tube (201) quantity, and the steam that is opened in every boiler tube (201) corresponding position enters hole (42), the lower end vertical weld of steam inlet tube (41) is connected to steam and enters hole (42), the flange of dry combustion method pot (10) is inserted in the upper end of steam inlet tube (41), and the upper end of steam inlet tube (41) penetrates internal bladder cavity (12); The upper end of steam inlet tube (41) is provided with sealing-ring or gasket (16), and sealing-ring or gasket (16) are provided with pressure strip (17), and pressure strip (17) passes the flange that sealing-ring or gasket (16) are connected in dry combustion method pot (10) by forcing screw; Correspondence position at Stainless steel pot cover (11) is provided with the steam distribution cavity, and the steam distribution cavity is communicated with the endoporus top of steam oven inner room with steam inlet tube (41).
8. a kind of steam generator of annealing furnace according to claim 1, it is characterized in that: be positioned at the side of built-in dry combustion method inner bag (1) away from annealing furnace high temperature annealing district (6), the corresponding position of heat conduction bending clamp (14) is provided with phase-transition heat-preserving district heating unit (7).
9. a kind of steam generator of annealing furnace according to claim 1 is characterized in that: be provided with enamel-cover roasting oven waste gas heating device (8) between priming apparatus (3) and built-in dry combustion method inner bag (1); Enamel-cover roasting oven waste gas heating device (8) comprises second water inlet pipe mouth (84), is installed on afterheat steam dry combustion method pot (80) and waste heat Stainless steel pot cover (81) in the enamel-cover roasting oven waste discharge air channel, is provided with gasket (16) between the flange of afterheat steam dry combustion method pot (80) and the waste heat Stainless steel pot cover (81); The pot mouth of afterheat steam dry combustion method pot (80) is installed to the side, and the bottom side plate of afterheat steam dry combustion method pot (80) is low inside and high outside shape; Second water inlet pipe mouth (84) is inserted into top near afterheat steam dry combustion method pot (80) the bottom of a pan from waste heat Stainless steel pot cover (81), and the below of second water inlet pipe mouth (84) is provided with second water-accepting board (82); The bottom of waste heat Stainless steel pot cover (81) is by the internal bladder cavity (12) of water inlet pipe mouth (50) the built-in dry combustion method inner bag of connection (1), and the periphery bag of water inlet pipe mouth (50) is provided with muff (83); Described priming apparatus (3) is communicated with second water inlet pipe mouth (84).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202393375U CN201756573U (en) | 2010-06-25 | 2010-06-25 | Steam generator of annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202393375U CN201756573U (en) | 2010-06-25 | 2010-06-25 | Steam generator of annealing furnace |
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|---|---|
| CN201756573U true CN201756573U (en) | 2011-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202393375U Expired - Lifetime CN201756573U (en) | 2010-06-25 | 2010-06-25 | Steam generator of annealing furnace |
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| CN (1) | CN201756573U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871043A (en) * | 2010-06-25 | 2010-10-27 | 东莞市康汇聚线材科技有限公司 | Steam generator of annealing furnace and control method thereof |
| CN103225015A (en) * | 2013-04-23 | 2013-07-31 | 吴江市神州机械有限公司 | Enamelling machine annealing apparatus with spontaneous steam |
-
2010
- 2010-06-25 CN CN2010202393375U patent/CN201756573U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871043A (en) * | 2010-06-25 | 2010-10-27 | 东莞市康汇聚线材科技有限公司 | Steam generator of annealing furnace and control method thereof |
| CN103225015A (en) * | 2013-04-23 | 2013-07-31 | 吴江市神州机械有限公司 | Enamelling machine annealing apparatus with spontaneous steam |
| CN103225015B (en) * | 2013-04-23 | 2015-10-21 | 吴江市神州机械有限公司 | Can from the enamelling machine annealing device of bleed steam |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110309 Effective date of abandoning: 20120718 |