CN203270374U

CN203270374U - Normal pressure multi-channel papermaking drying cylinder

Info

Publication number: CN203270374U
Application number: CN 201320130565
Authority: CN
Inventors: 李春崇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-03-21
Filing date: 2013-03-21
Publication date: 2013-11-06
Anticipated expiration: 2023-03-21

Abstract

The utility model discloses a normal pressure multi-channel papermaking drying cylinder. The drying cylinder comprises a cylinder body and is characterized in that a plurality of heat conduction channels are evenly distributed in the cylindrical cylinder wall of the cylinder body transversely or longitudinally, one end of each heat conduction channel is communicated with a steam input pipe, the other end of each heat conduction channel is communicated with a condensate water output pipe, and the steam input pipe and the condensate water output pipe are respectively communicated with a steam inlet and a condensate water outlet of a rotating joint. According to the drying cylinder in the structure, steam enter the heat conduction channels of the cylinder body, the cylindrical cylinder wall of the cylinder body is enabled to heat, heat is transferred to wed paper to be dried on the surface of the cylinder wall, the wet paper is heated so as to evaporate moisture, and accordingly the drying goal can be achieved. As the drying cylinder is structurally open, and pressure is only exists in the heat conduction channels, so the drying cylinder does not belong to a pressure container. Therefore, the drying cylinder disclosed by the utility model is paper drying equipment with a normal pressure container drying cylinder, the drying cylinder is simple in structure, high in temperature, high in heat transfer efficiency, light in weight, smooth in steam flow and condensate water discharge and low in manufacturing cost.

Description

A kind of normal pressure multichannel paper-making drying cylinder

Technical field

The utility model relates to a kind of drying equipment, especially the paper drying cylinder in the papermaking facility.

Background technology

In at present general papermaking facility, drying section is the main power consumption part of paper machine, and drying cylinder is the major part of Dryer Section of Paper Machine.Existing drying cylinder is mainly constructed and is comprised cylinder body, power transmission shaft, steam and condensed water turnover swivel joint, condensed water discharge siphon pipe and attemperator etc.The main task of drying cylinder is with the l Water Paper page oven dry through cylinder surfaces.The drying cylinder of this structure is in the process with the oven dry of l Water Paper page, ubiquity impeded drainage problem, build up in drying cylinder if in drying cylinder, the condensed water eliminating is bad, when gathering, the higher condensed water of rotating speed forms the condensation water ring when more, because condensation water ring thermal conductivity factor is low, to greatly increase the thermal resistance of drying cylinder, cause the drying efficiency of drying cylinder to descend; When the drying cylinder internal water accumulation, also can greatly increase the power that transmission consumes; When cold condensed water is discharged not freely off and on, can cause drying section electric load strenuous exercise, the mass dryness fraction of page is unstable, affects the normal operation of paper machine; The transmission balance of drying cylinder is destroyed, thereby caused paper machine running mid frame to produce vibration.Siphon pipe is mainly used to get rid of the drying cylinder condensed water at present, but when the rotating speed requirement was high, the drying cylinder condensed water was got rid of or be undesirable.In addition, existing drying cylinder belongs to airtight pressure vessel, and casing wall and end cap need enough wall thickness to bear steam pressure.Steam pressure is higher, and the casing wall wall thickness is larger, and resistance to heat is also larger, thereby the production capacity raising of drying cylinder is restricted, and the material such as drying cylinder weight and consumption steel increases simultaneously.In order to overcome the shortcoming of traditional drying cylinder, also someone proposes multichannel drying cylinder theory and studies at present, and the major programme of proposition has: 1, at drying cylinder inwall casting groove, and cover cover plate on groove; 2, at drying cylinder outer wall casting groove, and cover cover plate on groove; 3, at the drying cylinder inwall, metal corrugated plate is installed.These schemes still can't realize using because of reasons such as difficulty of processing, stressed, sealings so far.

The utility model content

The purpose of this utility model is to provide a kind of simple in structure, heat transfer efficiency is high, condensate water discharging is unimpeded, temperature is high and cost is low normal pressure multichannel paper-making drying cylinder.

For reaching above-mentioned purpose, the technical solution of the utility model is:

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

In the cylindrical shape casing wall of described cylinder body, laterally or vertically be 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 communicated with condensate output transistor;

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

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

The drying cylinder of said structure, casing wall is connected with the spoke at two ends, and the two ends spoke is separately fixed on the power transmission shaft of both sides, is fixedly connected with swivel joint in an end axle wherein.Vapours is redistributed in the passage of heat of cylinder body from the steam inlet of swivel joint to steam input pipe.Steam enters the passage of heat of cylinder body, makes the cylindrical shape casing wall heating of cylinder body, and heat passes on the casing wall surface and needs the dry wet paper, the wet paper moisture content that evaporates by heat, thus reach dry purpose.When steam was to the wet paper drying, steam was condensed into water, and the Steam Actuation that is constantly entered in passage of heat, shifted condensed water onto condensation-water drain, discharged from the condensation-water drain of swivel joint at last.Because the drying cylinder structure is opened wide, because passage of heat is less, can bear higher pressure, and only pressure be arranged in passage of heat, so drying cylinder does not belong to pressure vessel.Therefore, drying cylinder of the present utility model is a kind of non-pressure vessel, and is simple in structure, and heat transfer efficiency is high, and temperature is high, and is lightweight, the paper drying equipment of the unimpeded and low cost of manufacture of vapor flow and condensate water discharging.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the utility model transverse annular cloth passage of heat.

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

Fig. 3 is the sectional structure schematic diagram of the vertical cloth passage of heat of the utility model.

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

In the drawings, left axle 1, bearing 2, spoke 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 inlet 10, condensation-water drain 11, condensed water transition conduit 12, steam transition conduit 13, laterally the steam input is in charge of 14, and laterally condensed water output is in charge of 15, vertically passage of heat 16, vertically condensed water output is in charge of 17, and vertically the steam input is in charge of 18, siphunculus 19.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Shown in Figure 1, be the sectional structure schematic diagram of the utility model transverse annular cloth passage of heat; Shown in Figure 2, be the structural representation of analysing and observe along the A-A line in Fig. 1.Come 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, the inboard, two ends of casing wall 5 is fixedly connected with two spokes 3 respectively, and 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; Be respectively equipped with bearing 2 at left axle 1 and right axle 8 outsides.In cylindrical shape casing wall 5, laterally be 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 condensed water output and is communicated with condensate output transistor 7, and the other end of steam input pipe 6, condensate output transistor 7 is communicated with steam inlet 10 and the condensation-water drain 11 of swivel joint 9 by steam transition conduit 13, condensed water transition conduit 12 respectively.

Shown in Figure 3, be the sectional structure schematic diagram of the vertical cloth passage of heat of the utility model, shown in Figure 4, be the structural representation of analysing and observe along the B-B line in Fig. 3.In like manner, come together to see in conjunction with two figure, compare with Fig. 2 with Fig. 1, the passage of heat that just arranges in casing wall 5 with laterally passage of heat 4 is mutually vertical, is vertical passage of heat 16, basic identical with Fig. 1, Fig. 2 of other structure.As we know from the figure, vertically passage of heat 16 sequentially by vertical steam input be in charge of 18, steam input pipe 6, steam transition conduit 13 be communicated with steam inlet 10, or sequentially export by vertical condensed water be in charge of 17, condensate output transistor 7, condensed water transition conduit 12 and condensation-water drain 11.Each passage of heat 4 on the same group is communicated with by the siphunculus 19 of an end.See shown in Fig. 3, steam input is in charge of 18, steam input pipe 6, condensed water output are in charge of 17, condensate output transistor 7 is the outsides that are arranged in cylinder body, in like manner, also can be arranged in the inboard of cylinder body again.

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 of every group are communicated with respectively with steam inlet 10 and condensation-water drain 11 respectively.Simultaneously, in order to increase the temperature homogeneity of casing wall 5, adjacent passage of heat 4 be attributed to respectively different groups and steam flow opposite.

Steam swivel joint 9 comprises condensed water transition conduit 12, steam transition conduit 13, steam inlet 10 and condensation-water drain 11, and wherein, condensed water transition conduit 12 communicates with condensation-water drain 11, steam transition conduit 13 and steam inlet 10.Steam swivel joint 9 is prior art products, on sale on the market.

Operation principle of the present utility model is: heating steam is passed through steam transition conduit 13 from the steam inlet 10 of steam swivel joint 9, enter steam input pipe 6, then by the input of horizontal steam be in charge of 14 or vertically the steam input be in charge of 18 be assigned in casing wall 5 horizontal passages of heat 4 or vertically in passage of heat 16.Steam enters that in passage of heat, its heat is delivered on casing wall 5, and the wet paper of casing wall outer surface is carried out heat drying.Simultaneously steam is condensed into water, and by the Steam Actuation in passage of heat, enter horizontal steam input be in charge of 14 or vertically condensed water output be in charge of 17 and be pooled in condensed water transition conduit 12, discharge from the condensation-water drain 11 of swivel joint 9 at last.

In the utility model, the method that horizontal passage of heat 4 or vertical passage of heat 16 are set in casing wall 5 mainly contains two kinds:

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

2, the horizontal passage of heat 4 in casing wall 5 or vertically passage of heat 16, adopt the high metal of good heat conductivity, intensity or the pipeline of other material, first with the part of casing wall 5 thickness, i.e. shell casting or manufacturing are completed, and then arrange the passage of heat pipeline at the inner surface of this shell; Then adopt the material of another kind of good heat conductivity, as aluminium, aluminium alloy or copper etc., passage of heat pipeline and shell are cast as are integrated.

Claims

1. normal pressure multichannel paper-making drying cylinder, it comprises cylinder body, it is characterized in that:

In the cylindrical shape casing wall (5) of described cylinder body, laterally or vertically be provided with uniform some passages of heat (4,16);

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

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

2. normal pressure multichannel paper-making drying cylinder according to claim 1 is characterized in that:

Described each passage of heat (4,16) is divided into some groups, and the two ends of every group are communicated with respectively with steam inlet (10) and condensation-water drain (11) respectively.

3. normal pressure multichannel paper-making drying cylinder according to claim 1 is characterized in that:

Adjacent passage of heat (4,16) be attributed to respectively different groups and steam flow opposite.

4. normal pressure multichannel paper-making drying cylinder according to claim 1 is characterized in that:

Described casing wall (5) is with laterally passage of heat (4) or vertical passage of heat (16) are that a casting is whole.