CN204825502U - Prevent steam chest of comdenstion water drippage - Google Patents
Prevent steam chest of comdenstion water drippage Download PDFInfo
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- CN204825502U CN204825502U CN201520494787.1U CN201520494787U CN204825502U CN 204825502 U CN204825502 U CN 204825502U CN 201520494787 U CN201520494787 U CN 201520494787U CN 204825502 U CN204825502 U CN 204825502U
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Abstract
The utility model discloses a prevent steam chest of comdenstion water drippage, including the steam box, preheat box, main steam range, branch steam pipe and preheat the branch pipe, preheat the box and locate external week of steam chest, and preheat between box and the steam box formation and preheat the interlayer, both sides wall that the steam box is relative is equipped with steam inlet respectively, the main steam range is passed through branch steam pipe and is connected with each steam inlet, the main steam range is connected through preheating the branch pipe and preheating the interlayer. Its method is that the main steam range provides steam to preheating the branch pipe earlier, and the steam entering is preheated steam box and steam -jet ejector pipe after preheating the interlayer, after preheating the completion, adjusting and preheating the branch pipe control valve, reduce to preheat an intraductal steam flow, simultaneously, steam is carried through each branch steam pipe to the steam box to the main steam range, behind the steam entering steam box, through steam -jet ejector pipe inspection to paper. Its simple structure of this steam chest, manufacturing and cost of maintenance are lower, can effectively prevent the comdenstion water drippage simultaneously.
Description
Technical field
The utility model relates to pulp and paper technology field, particularly a kind of steam chest preventing condensed water from dripping.
Background technology
In Dryer Section of Paper Machine and calender, along paper banner uperize, steam is condensation in paper, release latent heat, thus the drying capacity in drying cylinder portion can be improved, the uniformity of paper web moisture profile content can be regulated, the printing performance of paper and the coating performance of coated paper after press polish can be improved, and the banner uniformity of printing performance, therefore, steam chest is widely used on the paper machine of various high-grade paper, particularly on speciality paper machine, as decorating base paper.
The steam gushed out in steam chest is very important away from water droplet, otherwise the water droplet ejected can produce paper defects on paper.On the other hand, steam chest on drying section and calender, the steam object of injection regulates paper water content, and the moisture therefore in steam is higher, usual employing saturated vapor, condensation will form water droplet when saturated vapor runs into temperature slightly low object.
In the production process of factory; due to the impact of the factors such as maintenance or contingency; paper machine is not run continuously; when starting shooting again after shutting down; the temperature of steam chest is obviously lower than the temperature of saturated vapor; run so at the beginning, the condensed water formed after steam-condensation will spray from nozzle in first wave steam.In addition owing to not being absolutely dry in steam, even if in the process run continuously, also likely have water droplet to enter into steam chest, this just needs steam chest to have the good water droplet that prevents to fall method on paper and the device supporting with method.
Traditional solution is that the position lower than nozzle is provided with a series of condensate water extraction device.
Application number is the solution adopted in the patent application of US3795578 and US3726757 is adopt corrugated base plate, nozzle is positioned at corrugated peak, trough is used for draining, but the condensation water problem that this method produces when not solving just start, even if the condensed water that other position produces is discharged by trough, but still can produce condensed water in nozzle, hogbacked floor manufactures cumbersome in addition.Wherein, US3574338 installs and sprays standpipe on the base plate of steam chest, thus make steam inlet higher than base plate, but the top of standpipe is plane, the condensed water that end face produces can flow in nozzle and go, the condensation water problem produced when simultaneously this method does not solve just start yet, and the standpipe of cooling is that the formation of condensed water provides chance.
Application number is that the patent application of US5211813 provides another kind of solution, steam chest comprises multiple steaming chamber, except Preheated steam is outdoor, steam from house steward is through multiple steaming chamber, be sprayed onto on paper after filtering out condensed water layer by layer again, thus make the steam of ejected towards paper not containing condensed water, this method is very effective, but equipment is very complicated, what manufacture and keep in repair is with high costs.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of steam chest preventing condensed water from dripping, and its structure is simple, manufacture and maintenance cost lower, while can effectively prevent condensed water from dripping, improve paper surface quality.
The technical solution of the utility model is: a kind of steam chest preventing condensed water from dripping, comprise steam casing, preheating casing, main steam range, steam branch pipe and pre-hot leg pipe, steam chest external week is located at by preheating casing, and form pre-thermofin between preheating casing and steam casing, the two side that steam casing is relative is respectively equipped with steam inlet, main steam range is connected with each steam inlet by steam branch pipe, and main steam range is connected with pre-thermofin by pre-hot leg pipe.
Described steam casing bottom part is furnished with multiple steam-jet siphon, and the upper end of steam-jet siphon, higher than the inner surface of steam bottom half, can prevent the condensed water that may be formed in steam casing from falling into steam-jet siphon and being ejected into paper surface.
Described steam-jet siphon is pipe, the upper end of steam-jet siphon, for spraying entrance, sprays that entrance is tapered upwards to be shunk, and tube wall is thinned to zero gradually, thus under the condensed water that steam-jet siphon may be formed can be flowed to along skew wall, and can not flow in the steam channel of playpipe.
Described steam casing comprises steam chest body and the first base plate, and steam chest body is the box like structure that bottom opens, and the first base plate is located at steam chest body bottom portion;
Described preheating casing comprises preheating cabinet body and the second base plate, and preheating cabinet body is the box like structure that bottom opens, and the second base plate is located at preheating cabinet body bottom portion.
Described second base plate is positioned at below the first base plate, is connected between the second base plate with the first base plate by each steam-jet siphon;
Along the throughput direction of paper, the left and right sides of the first base plate is concordant with steam chest body, the front and back two side direction steam chest body extension of the first base plate is to connecting with preheating cabinet body, make the bottom heating room of formation and casing preheating chamber relatively independent and communicate, strengthen pre-heat effect, also can share Preheated steam and jointly discharge condensed water;
Jacket space between second base plate and the first base plate is bottom heating room, bottom heating room is used for preheating first base plate, the second base plate and each steam-jet siphon, jacket space between preheating cabinet body and steam chest body is casing preheating chamber, casing preheating chamber is used for Preheated steam case body, and bottom heating room and casing preheating chamber form pre-thermofin.
Along the throughput direction of paper, in the left and right sides of described bottom heating room, side is connected with pre-hot leg pipe, and opposite side is provided with opposing steam flow pipe.The steam come from pre-hot leg pipe enters pre-thermofin and after Preheated steam casing, can recycle after entering external heater heating from opposing steam flow pipe, discharges the condensed water in pre-thermofin simultaneously.
Described first base plate is distributed with multiple through hole, second base plate is distributed with multiple shoulder hole (wherein, the diameter of macropore matches with the external diameter of steam-jet siphon, the diameter of aperture and the diameter compatible cover of steam-jet siphon, macropore and aperture have identical center line, the steam entering steam-jet siphon is sprayed onto on paper by aperture), shoulder hole one_to_one corresponding on through hole on first base plate and the second base plate, and form sets of vias, each sets of vias correspondence installs a steam-jet siphon, and the bottom of steam-jet siphon is embedded in shoulder hole; As a kind of preferred version, the injection porch of steam-jet siphon exceeds about 10mm than the height residing for the first base plate.
Be provided with multiple dividing plate in described steam casing, the compartition of steam box house is become multiple independently steaming chamber by each dividing plate.
The inlet end of described main steam range is provided with main steam range control valve, and for controlling the steam flow in main steam range, main steam range is provided with organizes steam branch pipe more, often organizes steam branch pipe correspondence and is connected with a steaming chamber; Along the throughput direction of paper, the top, two side, front and back of each steaming chamber is respectively equipped with steam inlet, often organizes steam branch pipe and comprises two steam branch pipes being symmetrically set in main steam range both sides, and each steam branch pipe correspondence is connected with steam inlet; Steam enters steaming chamber from the top, two side, front and back of each steaming chamber, can prevent steam from directly impacting steam-jet siphon and spraying, and also can ensure the uniformity of steam in steaming chamber simultaneously.
Often organize steam branch pipe and comprise major diameter arm and minor diameter arm, major diameter arm and minor diameter arm are located at the both sides, front and back of steaming chamber respectively, and major diameter arm is also provided with steam branch pipe control valve, for controlling the steam flow entering steaming chamber; The end of main steam range is provided with house steward's drain valve;
Condensate pipe is provided with bottom steaming chamber; Pre-hot leg pipe is provided with pre-hot leg pipe control valve.
Above-mentioned steam chest can realize a kind of method preventing condensed water from dripping: main steam range first provides steam to pre-hot leg pipe, after steam enters pre-thermofin, carries out preheating to steam casing and steam-jet siphon; After preheating completes, regulate pre-hot leg pipe control valve, reduce the steam flow in pre-hot leg pipe, meanwhile, main steam range is by each steam branch pipe to steam casing delivering vapor, and steam is ejected into paper by steam-jet siphon after entering steam casing.
The utility model, relative to prior art, has following beneficial effect:
1, this steam chest structure is simple, manufacture and maintenance cost lower, while can effectively prevent condensed water from dripping, improve paper surface quality.
2, this steam chest is by arranging preheating casing in steam chest external body, in conjunction with the structural design of steam-jet siphon, effectively prevent condensed water and drips and be ejected into paper surface.
3, in this steam chest, the steam inlet of steam-jet siphon outer wall is tapered, and the condensed water that steam-jet siphon outer wall is formed can not flow in steam-jet siphon, and directly can enter on the base plate of steam chest along outer wall, is then drained by drainpipe.
4, when this steam chest uses, while preheating being carried out to steam casing by pre-thermofin, also preheating is carried out to steam-jet siphon, effectively prevent the phenomenon of steam condensation in steam-jet siphon.
5, in this steam chest, the quantity of steam branch pipe control valve can be arranged according to actual needs, decreases the quantity of valve as far as possible, can reduce equipment cost further.
Accompanying drawing explanation
Fig. 1 is the structural representation of this steam chest.
Fig. 2 is the A-A cross sectional view of Fig. 1.
Fig. 3 is the structural representation of steam-jet siphon.
Fig. 4 is the structural representation of the first base plate.
Fig. 5 is the structural representation of the second base plate.
Fig. 6 is the B-B cross sectional view of Fig. 5.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
A kind of steam chest preventing condensed water from dripping of the present embodiment, as shown in Figure 1 or 2, comprise steam casing 1, preheating casing 2, main steam range 3, steam branch pipe 4 and pre-hot leg pipe 5, steam chest external week is located at by preheating casing, and form pre-thermofin between preheating casing and steam casing, the two side that steam casing is relative is respectively equipped with steam inlet, and main steam range is connected with each steam inlet by steam branch pipe, and main steam range is connected with pre-thermofin by pre-hot leg pipe.
Steam casing bottom part is furnished with multiple steam-jet siphon 6, and the upper end of steam-jet siphon, higher than the inner surface of steam bottom half, can prevent the condensed water that may be formed in steam casing from falling into steam-jet siphon and being ejected into paper surface.As shown in Figure 3, steam-jet siphon is pipe, and the upper end of steam-jet siphon is for spraying entrance, spray that entrance is tapered upwards shrinks, and tube wall is thinned to zero gradually, thus under making the condensed water that steam-jet siphon may be formed can flow to along skew wall, and can not flow in the steam channel of playpipe.
Steam casing comprises steam chest body and the first base plate 7, and steam chest body is the box like structure that bottom opens, and the first base plate is located at steam chest body bottom portion; Preheating casing comprises preheating cabinet body and the second base plate 8, and preheating cabinet body is the box like structure that bottom opens, and the second base plate is located at preheating cabinet body bottom portion.
Second base plate is positioned at below the first base plate, is connected between the second base plate with the first base plate by each steam-jet siphon; Along the throughput direction of paper 9, the left and right sides of the first base plate is concordant with steam chest body (as shown in Figure 1), the front and back two side direction steam chest body extension of the first base plate is to connecting (as shown in Figure 2) with preheating cabinet body, make the bottom heating room of formation and casing preheating chamber relatively independent and communicate, strengthen pre-heat effect, also can share Preheated steam and jointly discharge condensed water;
Jacket space between second base plate and the first base plate is bottom heating room 10, bottom heating room is used for preheating first base plate, the second base plate and each steam-jet siphon, jacket space between preheating cabinet body and steam chest body is casing preheating chamber 11, casing preheating chamber is used for Preheated steam case body, and bottom heating room and casing preheating chamber form pre-thermofin.
Along the throughput direction of paper, in the left and right sides of bottom heating room, side is connected with pre-hot leg pipe, and opposite side is provided with opposing steam flow pipe 12.The steam come from pre-hot leg pipe enters pre-thermofin and after Preheated steam casing, can recycle after entering external heater heating from opposing steam flow pipe, discharges the condensed water in pre-thermofin simultaneously.
As shown in Figure 4, first base plate is distributed with multiple through hole, as shown in Figure 5 or Figure 6, second base plate is distributed with multiple shoulder hole (wherein, the diameter of macropore matches with the external diameter of steam-jet siphon, the diameter of aperture and the diameter compatible cover of steam-jet siphon, macropore and aperture have identical center line, the steam entering steam-jet siphon is sprayed onto on paper by aperture), shoulder hole one_to_one corresponding on through hole on first base plate and the second base plate, and form sets of vias, each sets of vias correspondence installs a steam-jet siphon, the bottom of steam-jet siphon is embedded in shoulder hole, as a kind of preferred version, the injection porch of steam-jet siphon exceeds about 10mm than the height residing for the first base plate.
As shown in Figure 1, be provided with multiple dividing plate 13 in steam casing, the compartition of steam box house is become multiple independently steaming chamber by each dividing plate.
The inlet end of main steam range is provided with main steam range control valve 14, and for controlling the steam flow in main steam range, main steam range is provided with organizes steam branch pipe more, often organizes steam branch pipe correspondence and is connected with a steaming chamber; Along the throughput direction of paper, the top, two side, front and back of each steaming chamber is respectively equipped with steam inlet, often organizes steam branch pipe and comprises two steam branch pipes being symmetrically set in main steam range both sides, and each steam branch pipe correspondence is connected with steam inlet; Steam enters steaming chamber from the top, two side, front and back of each steaming chamber, can prevent steam from directly impacting steam-jet siphon and spraying, and also can ensure the uniformity of steam in steaming chamber simultaneously.
Often organize steam branch pipe and comprise major diameter arm and minor diameter arm, major diameter arm and minor diameter arm are located at the both sides, front and back of steaming chamber respectively, major diameter arm is also provided with steam branch pipe control valve 15, for controlling the steam flow entering steaming chamber, minor diameter arm does not establish steam branch pipe control valve; The end of main steam range is provided with house steward's drain valve 16;
Condensate pipe 17 (as shown in Figure 2) is provided with bottom steaming chamber; Pre-hot leg pipe is provided with pre-hot leg pipe control valve 18.
The method preventing condensed water from dripping that above-mentioned steam chest realizes, mainly: main steam range first provides steam to pre-hot leg pipe, after steam enters pre-thermofin, carries out preheating to steam casing and steam-jet siphon; After preheating completes, regulate pre-hot leg pipe control valve, reduce the steam flow in pre-hot leg pipe, meanwhile, main steam range is by each steam branch pipe to steam casing delivering vapor, and steam is ejected into paper by steam-jet siphon after entering steam casing.Be specially:
First steam off house steward control valve, opens the pre-hot leg pipe control valve on pre-hot leg pipe and the recycle control valve on opposing steam flow pipe, carries out preheating for whole steam casing, produces condensed water when preventing steam from entering in steam casing; When the temperature in steam casing reaches the temperature of steam, preheating completes, and steam chest starts normal work, now suitably turns down the steam flow of pre-hot leg pipe, turns down recycle control valve simultaneously.
Open main steam range control valve, steam enters into corresponding steaming chamber by often organizing steam branch pipe, steam branch pipe enters in steaming chamber from the side, that is the direction of admission is vertical with the direction of steam ejected towards paper, such one side avoids the adverse effect that steam impringement paper produces, to prevent on the other hand in steam may with condensed water be sprayed onto on paper; Steam is sprayed onto on paper by steam-jet siphon after entering into steaming chamber again, because Preheated steam has carried out preheating to steam-jet siphon, therefore steam is by producing condensed water during playpipe, the steam inlet of simultaneous steam injection pipe outer wall is tapered, the condensed water that steam-jet siphon outer wall is formed can not flow in steam-jet siphon, and directly can enter on the first base plate along outer wall, then drained by condensate pipe; In addition the steam inlet of steam-jet siphon is than the first base plate height about 10mm, thus the condensed water formed in steam chest can be avoided to enter in steam-jet siphon.
Steam branch pipe is uniformly distributed along the transverse direction of paper machine, corresponding with the steaming chamber of steam casing, each steaming chamber communicates with two steam branch pipes, the steam branch pipe being positioned at steaming chamber side is provided with steam branch pipe control valve, the steam branch pipe being positioned at steaming chamber opposite side do not have steam branch pipe control valve, caliber due to steam branch pipe one (namely with the steam branch pipe of steam branch pipe control valve) is greater than the caliber of steam branch pipe two (namely without the steam branch pipe of steam branch pipe control valve), thus the steam flow of corresponding steaming chamber can be controlled by controlling separately steam branch pipe one, decrease valve consumption, reach the object regulating paper banner water content simultaneously.
As mentioned above, just can realize the utility model preferably, above-described embodiment is only preferred embodiment of the present utility model, is not used for limiting practical range of the present utility model; Namely all equalizations done according to the utility model content change and modify, all by the utility model claim scope required for protection is contained.
Claims (9)
1. the steam chest preventing condensed water from dripping, it is characterized in that, comprise steam casing, preheating casing, main steam range, steam branch pipe and pre-hot leg pipe, steam chest external week is located at by preheating casing, and form pre-thermofin between preheating casing and steam casing, the two side that steam casing is relative is respectively equipped with steam inlet, and main steam range is connected with each steam inlet by steam branch pipe, and main steam range is connected with pre-thermofin by pre-hot leg pipe.
2. a kind of steam chest preventing condensed water from dripping according to claim 1, it is characterized in that, described steam casing bottom part is furnished with multiple steam-jet siphon, and the upper end of steam-jet siphon is higher than the inner surface of steam bottom half.
3. a kind of steam chest preventing condensed water from dripping according to claim 2, it is characterized in that, described steam casing comprises steam chest body and the first base plate, and steam chest body is the open box like structure in bottom, and the first base plate is located at steam chest body bottom portion;
Described preheating casing comprises preheating cabinet body and the second base plate, and preheating cabinet body is the box like structure that bottom opens, and the second base plate is located at preheating cabinet body bottom portion.
4. a kind of steam chest preventing condensed water from dripping according to claim 3, it is characterized in that, described second base plate is positioned at below the first base plate, is connected between the second base plate with the first base plate by each steam-jet siphon;
Along the throughput direction of paper, the left and right sides of the first base plate is concordant with steam chest body, and the front and back two side direction steam chest body extension of the first base plate is to connecting with preheating cabinet body;
Jacket space between second base plate and the first base plate is bottom heating room, and the jacket space between preheating cabinet body and steam chest body is casing preheating chamber, and bottom heating room and casing preheating chamber form pre-thermofin.
5. a kind of steam chest preventing condensed water from dripping according to claim 4, it is characterized in that, along the throughput direction of paper, in the left and right sides of described bottom heating room, side is connected with pre-hot leg pipe, and opposite side is provided with opposing steam flow pipe.
6. a kind of steam chest preventing condensed water from dripping according to claim 4, it is characterized in that, described first base plate is distributed with multiple through hole, second base plate is distributed with multiple shoulder hole, shoulder hole one_to_one corresponding on through hole on first base plate and the second base plate, and form sets of vias, each sets of vias correspondence installs a steam-jet siphon, the bottom of steam-jet siphon is embedded in shoulder hole, and the injection porch of steam-jet siphon exceeds 10mm than the height residing for the first base plate.
7. a kind of steam chest preventing condensed water from dripping according to claim 2, it is characterized in that, described steam-jet siphon is pipe, and the upper end of steam-jet siphon, for spraying entrance, sprays that entrance is tapered upwards to be shunk, and tube wall is thinned to zero gradually.
8. a kind of steam chest preventing condensed water from dripping according to claim 1, it is characterized in that, be provided with multiple dividing plate in described steam casing, the compartition of steam box house is become multiple independently steaming chamber by each dividing plate.
9. a kind of steam chest preventing condensed water from dripping according to claim 7, it is characterized in that, the inlet end of described main steam range is provided with main steam range control valve, and main steam range is provided with organizes steam branch pipe more, often organizes steam branch pipe correspondence and is connected with a steaming chamber; Along the throughput direction of paper, the top, two side, front and back of each steaming chamber is respectively equipped with steam inlet, often organizes steam branch pipe and comprises two steam branch pipes being symmetrically set in main steam range both sides, and each steam branch pipe correspondence is connected with steam inlet;
Often organize steam branch pipe and comprise major diameter arm and minor diameter arm, major diameter arm and minor diameter arm are located at the both sides, front and back of steaming chamber respectively, and major diameter arm is also provided with steam branch pipe control valve; The end of main steam range is provided with house steward's drain valve;
Condensate pipe is provided with bottom steaming chamber; Pre-hot leg pipe is provided with pre-hot leg pipe control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520494787.1U CN204825502U (en) | 2015-07-08 | 2015-07-08 | Prevent steam chest of comdenstion water drippage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520494787.1U CN204825502U (en) | 2015-07-08 | 2015-07-08 | Prevent steam chest of comdenstion water drippage |
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| Publication Number | Publication Date |
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| CN204825502U true CN204825502U (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520494787.1U Withdrawn - After Issue CN204825502U (en) | 2015-07-08 | 2015-07-08 | Prevent steam chest of comdenstion water drippage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088852A (en) * | 2015-07-08 | 2015-11-25 | 华南理工大学 | Steam box and method for preventing condensate water from dripping |
| CN112714811A (en) * | 2018-09-12 | 2021-04-27 | 三星电子株式会社 | Clothes nursing device |
-
2015
- 2015-07-08 CN CN201520494787.1U patent/CN204825502U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088852A (en) * | 2015-07-08 | 2015-11-25 | 华南理工大学 | Steam box and method for preventing condensate water from dripping |
| CN105088852B (en) * | 2015-07-08 | 2017-04-19 | 华南理工大学 | Steam box and method for preventing condensate water from dripping |
| CN112714811A (en) * | 2018-09-12 | 2021-04-27 | 三星电子株式会社 | Clothes nursing device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151202 Effective date of abandoning: 20170419 |
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| AV01 | Patent right actively abandoned |