CN103114488B

CN103114488B - A kind of normal pressure hyperchannel paper-making drying cylinder

Info

Publication number: CN103114488B
Application number: CN201310091915.3A
Authority: CN
Inventors: 李春崇
Original assignee: Individual
Current assignee: Guangxi Guang Yi Environmental Protection Technology Co Ltd
Priority date: 2013-03-21
Filing date: 2013-03-21
Publication date: 2016-06-01
Anticipated expiration: 2033-03-21
Also published as: CN103114488A

Abstract

The present invention discloses a kind of normal pressure hyperchannel paper-making drying cylinder, and it comprises cylinder body, it is characterised in that: in the garden tubular casing wall of described cylinder body, laterally or longitudinally it is provided with uniform some passages of heat; One end of described each passage of heat is connected with steam input pipe, and the other end is connected with condensate output transistor; Described steam input pipe, condensate output transistor are connected with condensation-water drain with the steam inlet of swivel joint respectively. The drying cylinder of this structure, steam enters the passage of heat of cylinder body, makes the garden tubular casing wall heating of cylinder body, and heat passes to casing wall and needs dry wet paper on the surface, and wet paper is heated and is evaporated moisture content, thus reaches dry object. Owing to drying cylinder body structure is unlimited, in passage of heat, only there is pressure, so drying cylinder does not belong to pressurized vessel. Therefore, the present invention is a kind of non-pressure vessel drying cylinder, and structure is simple, temperature height, heat transfer efficiency height, and weight is light, steam flow and the unimpeded paper dryer equipment with low cost of manufacture of condensate water discharging.

Description

A kind of normal pressure hyperchannel paper-making drying cylinder

Technical field

The present invention relates to a kind of drying plant, especially the paper drying cylinder in papermaking facility.

Background technology

In papermaking facility general at present, dryer part is the main power consumption part of paper machine, and drying cylinder is the major portion of Dryer Section of Paper Machine. Existing drying cylinder major constituents comprises cylinder body, transmission shaft, steam and water of condensation turnover swivel joint, water of condensation and discharges siphon pipe and attemperator etc. The main task of drying cylinder is dried by the wet paper page through cylinder surfaces. The drying cylinder of this kind of structure is in the process dried by wet paper page, generally there is the bad problem of draining, if water of condensation is got rid of bad in drying cylinder, build up in drying cylinder, water of condensation ring is formed when the higher water of condensation of rotating speed gathers more, owing to water of condensation ring thermal conductivity is low, to greatly increase the thermal resistance of drying cylinder, cause the drying efficiency of drying cylinder to decline; When drying cylinder internal water accumulation, also can greatly increase the power that transmission consumes; When water of condensation discharge smooth off and on time, dryer part electric power load strenuous exercise can be caused, the mass dryness fraction of paper page is unstable, affects the normal operation of paper machine; The transmission balance of drying cylinder also can be made when drying cylinder ponding is serious to be destroyed, thus in causing paper machine to operate, frame produces vibration. Current siphon pipe is mainly used to get rid of drying cylinder water of condensation, but when rotation speed requirements height, drying cylinder water of condensation is got rid of or undesirable. In addition, existing drying cylinder belongs to airtight pressurized vessel, and casing wall and end cap need enough wall thickness to bear vapor pressure. Vapor pressure is more high, and casing wall wall thickness is more big, and thermal resistance power is also more big, thus the throughput raising making drying cylinder is restricted, and the material such as drying cylinder weight and consumption steel increases simultaneously. In order to overcome the shortcoming of tradition drying cylinder, at present also it has been proposed that hyperchannel drying cylinder theory is studied, it is proposed to major programme have: 1, cast groove at drying cylinder inwall, and on groove, cover cover plate; 2, cast groove at drying cylinder outer wall, and on groove, cover cover plate; 3, at drying cylinder inwall, metal corrugated plate is installed. These schemes because of difficulty of processing, by the reason such as power, sealing so far still cannot realize application.

Summary of the invention

It is an object of the invention to provide that a kind of structure is simple, heat transfer efficiency height, condensate water discharging are unimpeded, temperature height and the low normal pressure hyperchannel paper-making drying cylinder of cost.

For reaching above-mentioned purpose, the technical scheme of the present invention is:

A kind of normal pressure hyperchannel paper-making drying cylinder, it comprises cylinder body, it is characterised in that:

In the garden tubular casing wall of described cylinder body, laterally or longitudinally it is provided with uniform some passages of heat;

One end of described each passage of heat is connected with steam input pipe, and the other end is connected with condensate output transistor;

Described steam input pipe, condensate output transistor are connected with condensation-water drain with the steam inlet of swivel joint respectively.

Described each passage of heat is divided into some groups, and the two ends often organized are connected with condensation-water drain respectively with steam inlet respectively.

The drying cylinder of said structure, casing wall is connected with the wheel hub at two ends, and two ends spoke is separately fixed on the transmission shaft of both sides, and one end axle internal fixtion wherein is connected with swivel joint. Hot steam, from the steam inlet of swivel joint to steam input pipe, is redistributed in the passage of heat of cylinder body. Steam enters the passage of heat of cylinder body, makes the garden tubular casing wall heating of cylinder body, and heat passes to casing wall and needs dry wet paper on the surface, and wet paper is heated and is evaporated moisture content, thus reaches dry object. While steam is to wet paper drying, steam is condensed into water, and the steam constantly entered in passage of heat promotes, and shifts water of condensation onto condensation-water drain, finally discharges from the condensation-water drain of swivel joint. Owing to drying cylinder structure is unlimited, because passage of heat is less, higher pressure can be born, and in passage of heat, only have pressure, so drying cylinder does not belong to pressurized vessel. Therefore, the drying cylinder of the present invention is a kind of non-pressure vessel, and structure is simple, heat transfer efficiency height, temperature height, and weight is light, steam flow and the unimpeded paper dryer equipment with low cost of manufacture of condensate water discharging.

Accompanying drawing explanation

Fig. 1 is the sectional structure schematic diagram of transverse annular cloth passage of heat of the present invention.

Fig. 2 is the structural representation analysed and observe along line A-A in Fig. 1.

Fig. 3 is the sectional structure schematic diagram of the longitudinal cloth passage of heat of the present invention.

Fig. 4 is the structural representation analysed and observe along line B-B in Fig. 3.

In the drawings, left axle 1, bearing 2, wheel hub 3, horizontal passage of heat 4, casing wall 5, steam input pipe 6, condensate output transistor 7, right axle 8, steam swivel joint 9, steam-in 10, condensation-water drain 11, the excessive pipe 12 of water of condensation, the excessive pipe 13 of steam, horizontal steam input is in charge of 14, and laterally solidifying water exports and is in charge of 15, longitudinal passage of heat 16, longitudinally solidifying water exports and is in charge of 17, and longitudinal steam input is in charge of 18, siphunculus 19.

Embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

Shown in Fig. 1, it it is the sectional structure schematic diagram of transverse annular cloth passage of heat of the present invention; Shown in Fig. 2, it it is the structural representation analysed and observe along line A-A in Fig. 1. Coming together to see in conjunction with two figure, cylinder body comprises left axle 1, bearing 2, spoke 3, casing wall 5 and right axle 8. Wherein, being fixedly connected with two spokes 3 respectively inside the two ends of casing wall 5, the centre of both sides spoke 3 is fixedly connected with right axle 8 with left axle 1 respectively, and left axle 1 and right axle 8 can be same axle; It is respectively equipped with bearing 2 outside left axle 1 and right axle 8. In garden tubular casing wall 5, laterally it is provided with uniform some horizontal passage of heat 4, one end of each horizontal passage of heat 4 is in charge of 14 by horizontal steam input and is connected with steam input pipe 6, the other end is in charge of 15 by horizontal water of condensation output and is connected with condensate output transistor 7, and the other end of steam input pipe 6, condensate output transistor 7 is connected with condensation-water drain 11 with the steam inlet 10 of swivel joint 9 by the excessive pipe of steam 13, the excessive pipe 12 of water of condensation respectively.

Shown in Fig. 3, it is the sectional structure schematic diagram of the longitudinal cloth passage of heat of the present invention, shown in Fig. 4, it is the structural representation analysed and observe along line B-B in Fig. 3. With reason, coming together to see in conjunction with two figure, compare with Fig. 1 with Fig. 2, the passage of heat just arranged in casing wall 5 is mutually vertical with horizontal passage of heat 4, is longitudinal passage of heat 16, and other structure is basic identical with Fig. 1, Fig. 2. As we know from the figure, longitudinal passage of heat 16 is sequentially in charge of 18 by longitudinal steam input, steam input pipe 6, the excessive pipe 13 of steam are connected with steam-in 10, or sequentially exported by longitudinally solidifying water be in charge of 17, condensate output transistor 7, the excessive pipe 12 of water of condensation and condensation-water drain 11. It is connected by the siphunculus 19 of one end with each passage of heat 4 of group. See again shown in Fig. 3, steam input is in charge of 18, steam input pipe 6, solidifying water export be in charge of 17, condensate output transistor 7 be the outside being arranged in cylinder body, with reason, it is also possible to be arranged in the inner side of cylinder body.

In order to increase the flow velocity of steam in passage of heat 4, each passage of heat 4 can be divided into some groups, and the two ends often organized are connected with condensation-water drain 11 respectively with steam inlet 10 respectively. Meanwhile, in order to increase the temperature homogeneity of casing wall 5, adjacent passage of heat 4 is attributed to different groups respectively and steam flow is contrary.

Steam swivel joint 9 comprises the excessive pipe of water of condensation 12, the excessive pipe 13 of steam, steam-in 10 and condensation-water drain 11, and wherein, the excessive pipe 12 of water of condensation communicates with condensation-water drain 11, the excessive pipe 13 of steam and steam-in 10. Steam swivel joint 9 is prior art products, on sale on the market.

The principle of work of the present invention is: heating steam passes through the excessive pipe 13 of steam from the steam-in 10 of steam swivel joint 9, enter steam input pipe 6, then by horizontal steam input be in charge of 14 or longitudinal steam input be in charge of in the 18 horizontal passages of heat 4 being assigned in casing wall 5 or longitudinal passage of heat 16. Steam enters its heat in passage of heat and is delivered on casing wall 5, and the wet paper of casing wall outside surface is carried out heat drying. Simultaneously steam is condensed into water, and is promoted by the steam in passage of heat, enter horizontal water of condensation export be in charge of 15 or longitudinal water of condensation export and be in charge of 17 and be pooled in the excessive pipe 12 of water of condensation, finally discharge from the condensation-water drain 11 of swivel joint 9.

In the present invention, the method arranging horizontal passage of heat 4 or longitudinal passage of heat 16 in casing wall 5 mainly contains two kinds:

1, the horizontal passage of heat 4 in casing wall 5 or longitudinal passage of heat 16, the pipeline of the metal that employing good heat conductivity, intensity are high or other material, such as steel, iron, aluminium, aluminium alloy or copper pipe etc., is cast as a whole with casing wall. Or

2, the horizontal passage of heat 4 in casing wall 5 or longitudinal passage of heat 16, the pipeline of the metal that employing good heat conductivity, intensity are high or other material, first by a part for casing wall 5 thickness, namely shell is cast or has been manufactured, then at the internal surface layout passage of heat pipeline of this shell; Then adopt the material of another kind of good heat conductivity, such as aluminium, aluminium alloy or copper etc., passage of heat pipeline and shell are cast as and are integrated.

Claims

1. a normal pressure hyperchannel paper-making drying cylinder, it comprises cylinder body, it is characterised in that:

In the round shape casing wall (5) of described cylinder body, laterally or longitudinally it is provided with uniform some passages of heat (4,16);

One end of each described passage of heat (4,16) is connected with steam input pipe (6), and the other end is connected with condensate output transistor (7);

Described steam input pipe (6), condensate output transistor (7) are connected with condensation-water drain (11) with the steam inlet (10) of swivel joint (9) respectively;

Each described passage of heat (4,16) is divided into some groups, and the two ends often organized are connected with condensation-water drain (11) respectively with steam inlet (10) respectively;

Adjacent passage of heat (4,16) is attributed to different groups respectively and steam flow is contrary;

The method arranging horizontal passage of heat (4) or longitudinal passage of heat (16) in casing wall 5 mainly contains two kinds:

(1) the horizontal passage of heat 4 in casing wall (5) or longitudinal passage of heat (16), pipeline and the casing wall of employing good heat conductivity, the metal that intensity is high are cast as a whole; Or

(2) the horizontal passage of heat (4) in casing wall (5) or longitudinal passage of heat (16), the pipeline of employing good heat conductivity, the metal that intensity is high, first by a part for casing wall 5 thickness, namely shell is cast or has been manufactured, then at the internal surface layout passage of heat pipeline of this shell; Then adopt the material of another kind of good heat conductivity, passage of heat pipeline and shell are cast as and are integrated.