RU1836449C - Continuous tube drying facility - Google Patents

Abstract

A device for continuous drying of pipes can be used to dry coatings applied to the outer surface of pipes and to dry wet pipes. The device comprises a housing 1 in the form of a cylinder, in I-18 of which there is a pipe 2 to be dried. The housing 1 is connected to a heater 3, comprising a fan 4, an inlet channel 5. Outlet channels 6.7 connect both end sections. 1 with an Iengilator 4. Housing 1 is enclosed in a housing 8, equipped with distribution grids at the ends 9. The housing 8 with an air duct 10 forms a channel for supplying atmospheric air to the fan 4. Inserts 12 are placed axisymmetrically inside the housing 1. In the central part of the housing 1, an inlet chamber 14 is formed. In the end part of the housing 1, an outlet chamber 17 is formed. The surface of the insert 12 in the chamber 14 has openings 18 that define the tangential supply of heated air to the pipe 2, The surface of the insert 12 in the chamber 17 has an opening 19 made e in the form of annular slits for insertion circumference. 1 ill. Buffa c c s oo o $ b-b o

Description

The invention relates to metallurgy, in particular to heat treatment, and can be used for drying coated, applied to the outer surface of pipes, and drying wet pipes.

The aim of the invention is to increase the utilization of heat.

This goal is achieved by the fact that the device for continuous drying of pipes, containing a heater, a housing, a fan, leading the outlet channels, is provided with a casing, a distribution grill and replaceable inserts, while the casing covers the casing and together with its walls forms an inlet channel equipped with the mountaineers have distribution grids, and each of the replaceable inserts is made in the form of a cylinder and forms an underwater chamber with the body in the middle part of the cylindrical body and two outlet chambers at the ends of the body, while Suitable conductive and retraction chambers, separated from each other by partitions, each replaceable insert has openings in the middle part forming the tangential inlet of the drying agent to the surface of the pipe, while the ends - openings in the form of annular slits for insertion circumference.

The drawing shows the construction of the device in two forms.

The drying device comprises a housing 1 in the form of a cylinder in which there is a tube 2 to be dried. The housing 1 is connected to a heater 3, comprising a fan 4, a supply duct 5. This connection is made in the central part of the housing 1. The discharge ducts 6.7 are combined there are both end sections of the housing 1 with the fan 4. The housing 1 is enclosed in a casing 8 formed from the ends of the distribution grids 9. The casing 8 together with the air duct 10 forms a channel for supplying an atmospheric air blower to the fan 4. The air duct 10 is equipped with a control flap 11. B inserts 12 are axisymmetrically located inside the housing 2. The surface of the housing 1 forms a supply chamber 14 with the surface of the insert 12 and partitions 13 in the central part. At the end part of the housing 1, its surface together with the surface of the insert 12, partitions 15 and end caps 16 forms a discharge chamber 17. The surface of the insert 12 in the inlet chamber 14 has openings 18 that organize the tangential supply of heated air to the pipe 2. The surface of the entire core 12 in the outlet chamber 17 has openings 19, made in the form of ring slots insertions,

The device operates as follows.

Pipe 2 moves axially through the device body 1 in the axial direction. Its surface is blown by air driven by the fan 4. Air from the fan enters the heater 3. Then, through the inlet channel 5, air enters the inlet chamber 14. Through

holes 17 in the removable insert 12 in the middle part of the housing 1, the air is tangentially supplied to the surface of the pipe 2, blows around this surface and, passing to the end parts of the housing through the holes 19, enters

into the outlet chamber 17, and then through the outlet channels 6.7, enters the fan 4. An air duct 10 with a damper 11 is designed to control the flow of atmospheric air for drying and is connected to

casing 8. Distribution grilles 9 are designed to create a uniform flow of atmospheric air drawn for drying in the gap between the casing 8 and the housing 11. The grill 9 is

a flange with holes having a smaller area near the generatrix of the cylinder located at the junction of the duct 10 with the casing 8, and a large area at the diametrically opposite generatrix. These

areas can be determined by known formulas for calculating hydraulic resistance to gas flow. The holes 18 from the supply chamber 14 are made in accordance with the drawings. Air, a drying agent, is heated in heater 3, which is an electric heater with adjustable power. Multiple air circulation in the circuit formed by the inlet

channel 5, the inlet chamber 13, the gaps between the pipe 2 and removable inserts 11, the outlet chamber 16, the outlet channels 6,7 and fans 4, leads to the fact that the air temperature can be

increased to acceptable values determined by the technology or materials used in the design of the furnace with low heater power.

The gap between the housing 1 and the casing 8,

to which a weak stream of air drawn for drying from the atmosphere moves, is a good heat-insulating layer, and the heat stream that is transferred from the body to the air is returned to

the drying process, and the small air velocity in the gap between the casing and the casing helps to reduce heat transfer from the casing to the casing.

Replaceable inserts can have a diameter that provides the most suitable

heat and mass transfer drying channel, distribution gratings

agent with the surface of the pipe and are corresponding to the ends of the body, each;

The pressure and volume of air are supplied, and the feed-replaceable inserts are made in the form of cylinders.

fo fan 4.ray forms a supply chamber with the housing

Claims (1)

The claims 5 ru in the middle part of the cylindrical A device for continuous drying of the housing, and two outlet chambers at the end: pipes containing a heater, housing, housings, while supplying and removing the jaw fan, inlet and outlet canal cameras are separated by a partition l, characterized in that, with pillars, and each removable insert is made. an increase in utilization factor 10 with openings in the middle part forming. heat, the device is equipped with a casing; limit grids and replaceable agents to the pipe surface and from the hole inserts, while the casing covers the core form of the annular slots at the ends along it with the pus and forms, along with its walls, the entrance-rut.