CN104195866B - The method of the banner water content of a kind of secondary steam regulation case and adjusting paper - Google Patents
The method of the banner water content of a kind of secondary steam regulation case and adjusting paper Download PDFInfo
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- CN104195866B CN104195866B CN201410424985.0A CN201410424985A CN104195866B CN 104195866 B CN104195866 B CN 104195866B CN 201410424985 A CN201410424985 A CN 201410424985A CN 104195866 B CN104195866 B CN 104195866B
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Abstract
The method that the invention discloses the banner moisture of a kind of secondary steam regulation case and adjusting paper, comprises steam chest, main steam range and the house steward that bleeds, and the arrival end of main steam range is provided with house steward's control valve; The outside of steam chest is provided with preheating chamber; Preheating chamber is communicated with on the pipeline between arrival end and house steward's control valve of main steam range by pre-hot leg pipe; Steam chest is followed successively by along the direction of advance of paper: extraction zone, the bottom that bottom is provided with porous plate or seam template is provided with the stagnant area of porous plate or seam template Pen Qi district and bottom opening; Utilize the air that paper is carried secretly tentatively to regulate, solve the impact on steam heat-transfer effect of paper entrapped air and reduced secondary regulated quantity, carry out secondary adjusting by the steam flow of the each vaporium of steam chest again, reach the object that regulates paper banner water content. Because the secondary regulated quantity of steam flow is few, greatly reduce the difference in flow of each vaporium, avoid steam flowing between each vaporium, guarantee regulating effect.
Description
Technical field
The present invention relates to pulp and paper technology field, relate in particular to a kind of secondary steam regulation case and regulate paperThe method of the banner water content of opening.
Background technology
Steam chest is along paper banner uperize, and steam is condensation in paper, discharges latent heat, thereby improvesThe temperature of wet web, reduce surface tension and the viscosity of water in wet web, can improve wet end, press sectionThe drying capacity of water separation capability and drying cylinder portion, the while can regulate the uniformity of paper banner water content, energyImprove the printing performance of paper and the coating performance of coated paper after press polish, and the banner uniformity of printing performance,Therefore steam chest is widely used in various paper machines, particularly product quality is required to higher speciality paperOn machine.
It is by steam chest is divided into along banner that traditional steam chest regulates the function of paper banner water contentMultiple vaporiums, the steam flow that independent adjusting enters each vaporium is realized. Lacking of this methodPoint is in the time that a vaporium flow-rate ratio is lower, and it is supplementary that the steam of the vaporium that around flow is high will run,Particularly, in the time that steam chest is arranged on wet end and vacuum tank and is used in conjunction with, the shortcoming of this method is just very brightAobvious, when the steam flow of some chambers declines, during lower than the ability of vacuum draw, vacuum tank will from aroundThe large vaporium of steam flow in extract steam, even if the little vaporium of flow is positioned at both sides, due to limitPlate is thicker than middle dividing plate, even also has other spacer assembly, the therefore supplementary possibility ratio of extracting airLess, vacuum tank just makes steam flow everywhere to even future development like this, thereby has affected steam chestRegulating effect.
US Patent No. 3945881 is in order to address the above problem, by vacuum tank is also divided into and steam chestThe vacuum chamber of same quantity, and control separately, thereby in the time that a certain chamber steam flow reduces, relativelyThe stream of bleeding of the vacuum chamber of answering also reduces, but the shortcoming of this method is to adopt two cover control systems, withTime make vacuum tank become more complicated.
US Patent No. 4249992 and US4331510 have proposed another solution, and steam the each chamber of bannerSteam flow amount is identical with pressure, regulates paper horizontal stroke by the contact area that changes banner each chamber steam and paperWidth water content, provides the larger vapor action time to the position of high humidity, and the little position of humidityReduce the contact area of steam and paper, because the steam flow of each chamber is identical, therefore steam flowCan between each chamber, not flow, but this method needs the internal structure of complexity, uniqueness.
On the other hand, in steam, the content of on-condensible gas is the key factor that affects steam chest action effect,Fixed gas cognition in steam reduces the condensation rate of steam in paper greatly, affects the heat transfer effect of steamReally, steam chest be arranged on paper above, paper all can be brought a large amount of air in running, asFruit is not taken measures, and these air will enter the space of steam chest and paper composition, thereby reduces steamHeat transfer efficiency.
Traditional equipment does not have measure to stop air to be brought in the steam of steam chest injection, some equipment nowBefore steam chest, paper inlet sprays a large amount of steam to scheme the stoping air-flow of being brought into by paper, but this methodThe emitted dose of steam is difficult to control, if the excessive steam that will cause of steam flow is excessive, and waste steam,Affect workshop condition, if the too small object that stops air-flow that do not reach again of flow.
Summary of the invention
The object of the invention is to overcome the shortcoming and defect of above-mentioned prior art, provide a kind of secondary to regulateThe method of the banner water content of steam chest and adjusting paper.
The present invention is achieved through the following technical solutions:
The steam chest that secondary regulates, comprises steam chest, main steam range 1 and the house steward 6 that bleeds, described steamingVapour house steward 1 arrival end is provided with house steward's control valve 2; The outside of described steam chest is provided with preheating chamber 12; InstituteState that preheating chamber 12 is communicated with in main steam range 1 by a pre-hot leg pipe 9 with warm-up control valve 10On pipeline between arrival end and house steward's control valve 2; Described preheating chamber 12 is connected with opposing steam flow pipe 11,Opposing steam flow pipe 11 is provided with control valve;
Described steam chest comprises successively along the direction of advance of paper: bottom is provided with porous plate 14 or seam templateExtraction zone 44, bottom be provided with the delay of porous plate 14 or seam template Pen Qi district 33 and bottom openingDistrict 22;
In described extraction zone 44, there are multiple independently aspirating chamber 44-1; Each aspirating chamber 44-1 is logical respectivelyCross corresponding suction branch 7 and be communicated with the house steward 6 that bleeds, on each suction branch 7, be equipped with control valve;
Preheating chamber 12 bottoms of described extraction zone 44 paper inlet direction front end-plates and correspondence and paperDistance is higher than the distance of 22 bottoms, 33 stagnant area, Pen Qi district and paper, difference in height L=0.5～2mm.
In described Pen Qi district 33, there are multiple independently vaporium 33-1; Each vaporium 33-1 is logical respectivelyCross corresponding steam branch pipe 3 and be communicated with main steam range 1, on each steam branch pipe 3, be equipped with control valve;
In described stagnant area 22, there are multiple 22-1 of independently retained chamber.
The transverse width Yu Penqi district 33 of described extraction zone 44 is equal, and the height of extraction zone 44 is spray vapour1/3～1/2 of district's 33 height.
Multiple aspirating chamber 44-1 being laterally uniformly distributed along paper approach axis of described extraction zone 44; InstituteState aspirating chamber 44-1 corresponding one by one with the 33-1 of jet chamber, and width equates.
Described suction branch 7 is arranged on the top of extraction zone 44, and the air in extraction zone 44 upwards entersSuction branch 7 and bleeding in house steward 6.
Described 22 transverse width Yu Penqi districts 33, stagnant area equate, 1/3～1/2 of height Wei Penqi district 33.
Multiple 22-1 of retained chamber being laterally uniformly distributed along paper approach axis of described stagnant area 22; InstituteState and take out that to be detained 22-1 corresponding one by one with the 33-1 of jet chamber, and width is equal.
The described house steward of bleeding 6 is connected with air exhauster.
The steam chest that adopts above-mentioned secondary to regulate, for regulating the method for banner water content of paper, bagDraw together following steps:
First close suction branch 7 and house steward's control valve 2 of bleeding on house steward 6, open on pre-hot leg pipe 9Warm-up control valve 10 and opposing steam flow pipe 11 on control valve, whole steam chest is carried out to preheating, anti-Only steam enters in steam chest and produces condensed water when air exhauster is bled; When steam chest (whole casing)When temperature reaches the temperature of steam, preheating completes, and steam chest is started working, and controls pre-hot leg pipe 9 and steamsSteam flow on vapour return duct 11;
Open the control valve of bleeding on house steward 6 and start to bleed, open house steward's control valve 2 simultaneously, steam passes throughSteam branch pipe 3 enter into Pen Qi district 33 each independently in vaporium 33-1;
Control valve on bleeding regulating arm 7, controls the rate of air sucked in required of corresponding suction branch 7, to obtain tuneJoint enters the air capacity in vaporium 33-1 from aspirating chamber 44-1, and preliminary acquisition regulates corresponding paper horizontalThe condensation rate of position steam and heat-transfer effect, the banner water content that completes paper distributes and tentatively regulates;
Control valve on steam regulation arm 3, controls and the steam flow of its corresponding steam branch pipe, to obtainObtain the steam flow of each vaporium 33-1, thereby further regulate the water content of corresponding position paper.
The present invention, with respect to prior art, has following advantage and effect:
First the air that utilizes paper to carry secretly tentatively regulates, and having solved paper carries sky secretly so on the one handThe impact of gas on steam heat-transfer effect, has greatly reduced secondary regulated quantity on the other hand, and secondary only regulates and needsFinely tune. Then carry out secondary adjusting by the steam flow of each vaporium, reach and regulate paper bannerThe object that water content distributes. Because the secondary regulated quantity of steam flow is few, thereby greatly reduce each steamingThe difference in flow of steam chest, avoids steam flowing between each vaporium, has guaranteed regulating effect.
Stagnant area be positioned at Pen Qi district after, each retained chamber is corresponding one by one with vaporium, Pen Qi district does not haveThere is the steam of heat transfer to continue transmission of heat by contact with paper in retained chamber, increased the utilization rate of steam,Reduced the excessive of steam in steam chest simultaneously.
33 bottoms, Pen Qi district are provided with porous plate 14 or seam template, make steam be sprayed onto more equably pageOn.
Stagnant area is laterally evenly divided into multiple retained chamber, the steam in Yu Penqi district of each retained chamber by dividing plate edgeChamber is corresponding one by one, laterally has identical width along paper machine, thereby corresponding vaporium does not fully conduct heatSteam in retained chamber with paper continue transmission of heat by contact.
Steam branch pipe is arranged in main steam range between house steward's control valve 2 and condensate pipe 5, along paper machineLaterally be uniformly distributed, corresponding with vaporium, each vaporium communicates with a steam branch pipe, and steam props upPipe is to enter from the side in vaporium, that is to say that the direction of admission and steam spray to the direction of page flatOK, the adverse effect of having avoided so on the one hand steam impringement page to produce, has prevented steam on the other handMiddle may with condensed water be sprayed onto on page.
Pen Qi district by dividing plate along being laterally evenly divided into multiple vaporiums, the bleeding of each vaporium and extraction zoneChamber is corresponding one by one, laterally has identical width along paper machine, the air that can come by corresponding aspirating chamberThe heat-transfer effect of steam in the corresponding vaporium of the how many impacts of amount, thus can enter the horizontal water content of paperRow regulates.
Brief description of the drawings
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is A-A cross-sectional view in Fig. 1.
Fig. 3 is B-B cross-sectional view in Fig. 2.
Fig. 4 is C-C cross-sectional view in Fig. 2.
Fig. 5 is D-D cross-sectional view in Fig. 2.
Fig. 6 is porous plate 14 structural representations.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Figures 1 to 6. The steam chest that secondary of the present invention regulates, comprises steam chest, main steam range 1With the house steward 6 that bleeds, the arrival end of described main steam range 1 is provided with house steward's control valve 2;
The outside of described steam chest is provided with preheating chamber 12; Described preheating chamber 12 passes through one with warm-up controlThe pre-hot leg pipe 9 of valve (10) is communicated with the pipe between arrival end and house steward's control valve 2 of main steam range 1Lu Shang; Described preheating chamber 12 is connected with opposing steam flow pipe 11, and opposing steam flow pipe 11 is provided with control valve;
Described steam chest comprises successively along the direction of advance of paper: bottom is provided with porous plate 14 or seam templateExtraction zone 44, bottom be provided with the delay of porous plate 14 or seam template Pen Qi district 33 and bottom openingDistrict 22; In described extraction zone 44, there are multiple independently aspirating chamber 44-1; Each aspirating chamber 44-1 respectivelyBe communicated with by corresponding suction branch 7 house steward 6 that bleeds, on each suction branch 7, be equipped with control valve;
In described Pen Qi district 33, there are multiple independently vaporium 33-1; Each vaporium 33-1 is logical respectivelyCross corresponding steam branch pipe 3 and be communicated with main steam range 1, on each steam branch pipe 3, be equipped with control valve;
In described stagnant area 22, there are multiple 22-1 of independently retained chamber.
The transverse width Yu Penqi district 33 of described extraction zone 44 is equal, and the height of extraction zone 44 is spray vapour1/3～1/2 of district's 33 height.
Multiple aspirating chamber 44-1 being laterally uniformly distributed along paper approach axis of described extraction zone 44; InstituteStating aspirating chamber 44-1 equates with the width of vaporium 33-1.
Described suction branch 7 is arranged on the top of extraction zone 44, and the air in extraction zone 44 upwards entersSuction branch 7 and bleeding in house steward 6.
Described 22 transverse width Yu Penqi districts 33, stagnant area equate, 1/3～1/2 of height Wei Penqi district 33.
Multiple 22-1 of retained chamber being laterally uniformly distributed along paper approach axis of described stagnant area 22.
The described house steward of bleeding 6 is connected with air exhauster (not shown).
Stagnant area 22 be positioned at Pen Qi district 33 after, the vaporium 33-1 in 22-1 Yu Penqi district of each retained chamberCorresponding one by one, and width equates. The steam that Pen Qi district does not complete heat transfer continues with paper in retained chamberContinuous transmission of heat by contact, increased the utilization rate of steam, reduced the excessive of steam in steam chest simultaneously.
Increase the extraction zone adjustable range of bleeding, described extraction zone 44 paper inlet direction front end-plate and correspondencesPreheating chamber 12 bottoms and the distance of paper higher than other bottom, region the distance with paper, difference in heightL=1mm, has increased like this paper and has brought the air capacity in steam chest into.
Opposing steam flow pipe 11 is arranged on the other end relative with pre-hot leg pipe 9 on steam chest, and pre-vapours is logicalCross pre-hot leg pipe 9 and enter preheating chamber 12 from steam chest one end, then from the other end by opposing steam flow pipe11 discharge, and pre-vapours and the condensed water of discharge can return preheating chamber after draining and heat treatedIn 12, recycle.
The steam chest that in employing, secondary regulates, for regulating the method for banner water content of paper as follows:
First close suction branch 7 and house steward's control valve 2 of bleeding on house steward 6, open on pre-hot leg pipe 9Warm-up control valve 10 and opposing steam flow pipe 11 on control valve, whole steam chest is carried out to preheating, anti-Only steam enters in steam chest and produces condensed water when air exhauster is bled; When steam chest (whole casing)When temperature reaches the temperature of steam, preheating completes, and steam chest is started working, and controls (suitably reducing) pre-Steam flow on hot leg pipe 9 and opposing steam flow pipe 11;
Open the control valve of bleeding on house steward 6 and start to bleed, open house steward's control valve 2 simultaneously, steam passes throughSteam branch pipe 3 enter into Pen Qi district 33 each independently in vaporium 33-1;
Control valve on bleeding regulating arm 7, controls the rate of air sucked in required of corresponding suction branch 7, to obtain tuneJoint enters the air capacity in vaporium 33-1 from aspirating chamber 44-1, and preliminary acquisition regulates corresponding paper horizontalThe condensation rate of position steam and heat-transfer effect, the banner water content that completes paper distributes and tentatively regulates;
Control valve on steam regulation arm 3, controls and the steam flow of its corresponding steam branch pipe, to obtainObtain the steam flow of each vaporium 33-1, thereby further regulate the water content of corresponding position paper. ReachTo the object that regulates page banner water content, steam is sprayed onto by porous plate 14 after entering into vaporiumOn page.
As mentioned above, just can realize preferably the present invention.
Embodiments of the present invention are not restricted to the described embodiments, other are any do not deviate from of the present inventionThe change done under Spirit Essence and principle, modification, substitute, combination, simplify, all should be putting of equivalenceChange mode, within being included in protection scope of the present invention.
Claims (8)
1. the steam chest that secondary regulates, comprises steam chest, main steam range (1) and the house steward that bleeds (6),The arrival end of described main steam range (1) is provided with house steward's control valve (2); It is characterized in that:
The outside of described steam chest is provided with preheating chamber (12); Described preheating chamber (12) by one with in advanceThe pre-hot leg pipe (9) of heat control valve (HCV) (10) is communicated with at the arrival end of main steam range (1) and house steward to be controlledOn pipeline between valve (2); Described preheating chamber (12) is connected with opposing steam flow pipe (11), and steam returnsStream pipe (11) is provided with control valve;
Described steam chest comprises successively along the direction of advance of paper: bottom is provided with porous plate (14) or seamThe extraction zone (44) of template, bottom are provided with porous plate (14) or seam template Pen Qi district (33) and the endThe stagnant area (22) of portion's opening;
In described extraction zone (44), there are multiple independently aspirating chambers (44-1); Each aspirating chamber (44-1)Be communicated with by corresponding suction branch (7) house steward (6) that bleeds respectively, each suction branch (7) is all upperBe provided with control valve;
In described Pen Qi district (33), there are multiple independently vaporiums (33-1); Each vaporium (33-1)Be communicated with main steam range (1) by corresponding steam branch pipe (3) respectively, each steam branch pipe (3) is all upperBe provided with control valve;
In described stagnant area (22), there are multiple independently retained chamber (22-1);
Multiple aspirating chambers (44-1) of described extraction zone (44) laterally evenly divide along paper approach axisCloth; Described aspirating chamber (44-1) is corresponding one by one with vaporium (33-1), and width equates.
2. the steam chest that secondary according to claim 1 regulates, is characterized in that: described bleedsThe transverse width Yu Penqi district (33) in district (44) equates, the height Wei Penqi district (33) of extraction zone (44)1/3～1/2 of height.
3. the steam chest that secondary according to claim 1 regulates, described extraction zone (44) paperPreheating chamber (12) bottom of Way in front end-plate and correspondence and the distance of paper are higher than Pen Qi district (33)The distance of bottom, stagnant area (22) and paper, difference in height L=0.5～2mm.
4. the steam chest that secondary according to claim 3 regulates, is characterized in that: described in bleedPipe (7) is arranged on the top of extraction zone (44), and the air in extraction zone (44) upwards enters to bleed and props upIn pipe (7) and the house steward that bleeds (6).
5. the steam chest that secondary according to claim 3 regulates, is characterized in that: described delayTransverse width Yu Penqi district of district (22) (33) equates, 1/3～1/2 of height Wei Penqi district (33).
6. the steam chest that secondary according to claim 3 regulates, is characterized in that: described delayMultiple retained chamber (22-1) being laterally uniformly distributed along paper approach axis in district (22); Described retained chamber(22-1) corresponding one by one with vaporium (33-1), and width equates.
7. the steam chest that secondary according to claim 4 regulates, is characterized in that: described in bleed totalPipe (6) is connected with air exhauster.
8. adopt described in any one, secondary regulates in claim 1 to 7 steam chest for regulating paperThe method of banner water content, is characterized in that comprising the steps:
First close suction branch (7) and house steward's control valve (2) on the house steward that bleeds (6), open pre-Control valve on warm-up control valve (10) and opposing steam flow pipe (11) on hot leg pipe (9), to wholeSteam chest carries out preheating, prevents from producing when steam from entering in steam chest and air exhauster is bled condensed water; Work as steamingWhen the temperature of vapour case reaches the temperature of steam, preheating completes, and steam chest is started working, and controls pre-hot leg pipe(9) steam flow and on opposing steam flow pipe (11);
The control valve of opening on the house steward that bleeds (6) starts to bleed, and opens house steward's control valve (2) simultaneously, steamsVapour enter into Pen Qi district (33) by steam branch pipe (3) each independently in vaporium (33-1);
Control valve on bleeding regulating arm (7), controls the rate of air sucked in required of corresponding suction branch (7), withObtain adjusting and enter the air capacity in vaporium (33-1) from aspirating chamber (44-1), it is right that preliminary acquisition regulatesCondensation rate and the heat-transfer effect of the horizontal position of the paper steam of answering, the banner water content that completes paper dividesCloth tentatively regulates;
Control valve on steam regulation arm (3), controls and the steam flow of its corresponding steam branch pipe, withObtain the steam flow of each vaporium (33-1), thereby further regulate the water content of corresponding position paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424985.0A CN104195866B (en) | 2014-08-26 | 2014-08-26 | The method of the banner water content of a kind of secondary steam regulation case and adjusting paper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410424985.0A CN104195866B (en) | 2014-08-26 | 2014-08-26 | The method of the banner water content of a kind of secondary steam regulation case and adjusting paper |
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| CN104195866A CN104195866A (en) | 2014-12-10 |
| CN104195866B true CN104195866B (en) | 2016-05-04 |
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| CN201410424985.0A Expired - Fee Related CN104195866B (en) | 2014-08-26 | 2014-08-26 | The method of the banner water content of a kind of secondary steam regulation case and adjusting paper |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988787B (en) * | 2015-07-08 | 2017-08-25 | 华南理工大学 | The steam unit and method of a kind of utilization vacuum regulation Paper Moisture |
| CN106418645A (en) * | 2016-12-13 | 2017-02-22 | 安徽中烟再造烟叶科技有限责任公司 | Water-spraying cooling device of two ends of cylinder surface of Yankee dryer |
| CN113981730B (en) * | 2021-10-25 | 2023-07-11 | 浙江华章科技有限公司 | Partition steam humidifying device of intelligent paper machine |
| CN113969515B (en) * | 2021-10-25 | 2023-07-11 | 浙江华章科技有限公司 | Partition steam humidification system of intelligent paper machine and control method |
| CN114197241B (en) * | 2021-11-22 | 2023-07-14 | 浙江华章科技有限公司 | Paper machine humidifier with condensation water prevention heat preservation nozzle |
| CN114197240B (en) * | 2021-11-22 | 2023-07-14 | 浙江华章科技有限公司 | Paperboard steam humidifying device capable of avoiding plasticizing burst of paper and using method thereof |
| CN114182567B (en) * | 2021-11-22 | 2023-07-11 | 浙江华章科技有限公司 | Partition steam humidifying equipment capable of accurately controlling temperature and pressure and application method thereof |
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| US4358900A (en) * | 1980-09-24 | 1982-11-16 | Dove Norman F | Apparatus to supply steam including steam evacuation |
| US4702015A (en) * | 1986-02-28 | 1987-10-27 | Thermo Electron - Web Systems, Inc. | Evaporative-cooling apparatus and method for the control of web or web-production machine component surface temperatures |
| US4915788A (en) * | 1987-01-20 | 1990-04-10 | V.I.B. Apparatebau Gmbh | Method of contacting running webs with steam |
| CN204059092U (en) * | 2014-08-26 | 2014-12-31 | 华南理工大学 | A kind of Secondary Control steam chest |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI121674B (en) * | 2003-01-09 | 2011-02-28 | Metso Paper Inc | Method and apparatus for wetting a moving paper or cardboard web |
| US7513975B2 (en) * | 2003-06-25 | 2009-04-07 | Honeywell International Inc. | Cross-direction actuator and control system with adaptive footprint |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4358900A (en) * | 1980-09-24 | 1982-11-16 | Dove Norman F | Apparatus to supply steam including steam evacuation |
| US4702015A (en) * | 1986-02-28 | 1987-10-27 | Thermo Electron - Web Systems, Inc. | Evaporative-cooling apparatus and method for the control of web or web-production machine component surface temperatures |
| US4915788A (en) * | 1987-01-20 | 1990-04-10 | V.I.B. Apparatebau Gmbh | Method of contacting running webs with steam |
| CN204059092U (en) * | 2014-08-26 | 2014-12-31 | 华南理工大学 | A kind of Secondary Control steam chest |
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