CN114639521A

CN114639521A - Crosslinked cable ultraviolet irradiation device and method

Info

Publication number: CN114639521A
Application number: CN202210257887.7A
Authority: CN
Inventors: 李立军
Original assignee: China Three Gorges University CTGU
Current assignee: China Three Gorges University CTGU
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-06-17

Abstract

A cross-linked cable ultraviolet light irradiation device and method includes multiple roller brackets, a roller arranged on the multiple roller brackets, a cable passing through the center of the roller, multiple rows of reflectors fixed in the roller, each row of reflectors uniformly distributed around the axis of the roller, each reflector fixedly connected with the roller through a support, a lamp holder arranged in the reflector, an ultraviolet lamp tube arranged on the lamp holder, an electricity connecting mechanism arranged at one end of the roller, and a power supply connected with the ultraviolet lamp tube through the electricity connecting mechanism.

Description

Crosslinked cable ultraviolet irradiation device and method

Technical Field

The invention relates to a device and a method for irradiating a cross-linked cable by ultraviolet light.

Background

The existing crosslinked cable is generally manufactured by adopting an irradiation crosslinking mode, a plastic protective layer is injected outside a lead of the cable and then is heated and cured, in order to shorten the curing time, the plastic protective layer is cured by adopting an ultraviolet curing technology, and at present, some technical patents also exist for ultraviolet irradiation of the cable.

For example, patent No. CN 207183000U, a new energy-saving uv irradiation crosslinking cable device, which comprises an uv light box 2, through holes 1 for cables to pass through are provided at both ends of the uv light box 2, and at least three uv light covers 3 are uniformly provided in the uv light box 2 along its circumferential direction.

In the patent, "CN 111243785 a", an insulating high-temperature-resistant corrosion-resistant crosslinked cable and its irradiation crosslinking apparatus "includes (refer to paragraph 0053 and attached drawing 5 in the specification) the second lamp holder 17 and the arc-shaped surface of the first lamp holder 19 are provided with a mounting groove 61, the mounting groove 61 is internally and fixedly provided with a plurality of collimating lenses 6 and ultraviolet LED lamp beads 5, the ultraviolet LED lamp beads 5 and the collimating lenses 6 are paired one by one, when the first lamp holder 19 and the second lamp holder 17 are matched to form a complete circle, the ultraviolet LED lamp beads 5 and the collimating lenses 6 are distributed in an annular array, and ultraviolet light emitted by the ultraviolet LED lamp beads is converted into parallel light by the collimating lenses and then is focused to the first lamp holder 19 and the second lamp holder 17 to form a complete circle.

The patent number is "CN 202887874U", among the radiation device of low-pressure polyethylene insulated cable ultraviolet ray cross-linking irradiation case "irradiation case casing 1 that has irradiation case air outlet 12, in an irradiation unit of irradiation case casing, evenly arrange three ultraviolet mercury lamps along the circumferencial direction and form a set of lamp house as the irradiation source, ventilation window 5 has on the casing of the ultraviolet mercury lamp corresponding position of irradiation case, air outlet 4, air intake 6, every group lamp house is connected through wind fill 3, install flow distribution plate 7 in the lamp house, baffle 8, ultraviolet mercury lamp 9, at the back installation reflector 10 of ultraviolet mercury lamp.

It can be seen that in the technical solution of the above patent, "ultraviolet lamps" are fixed to irradiate the cable surface in one direction, and the irradiation state is as shown in fig. 6 of the figure, as can be seen from fig. 6, the cable surface at the corner between two adjacent ultraviolet lamps (at B in fig. 6) is the weakest in intensity of ultraviolet radiation, and the cable surface closer to the ultraviolet lamps is the stronger in intensity of ultraviolet radiation (at C in fig. 6), so that the entire cable surface has uneven illumination, and the curing of the cable surface is not uniform.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device and a method for ultraviolet irradiation of a cross-linked cable, which are used for solving the problems of uneven ultraviolet irradiation and uneven curing of the existing cross-linked cable.

In order to solve the problems, the technical scheme of the invention is as follows:

a cross-linked cable ultraviolet light irradiation device comprises a plurality of roller brackets, a roller is arranged on the roller brackets, a cable penetrates through the center of the roller, a plurality of rows of reflectors are fixedly arranged in the roller and are uniformly distributed around the axis of the roller, the reflectors are fixedly connected with the roller through a support, a lamp holder is arranged in each reflector, an ultraviolet lamp tube is assembled on the lamp holder, one end of the roller is provided with a power connection mechanism, and the ultraviolet lamp tube is connected with a power supply through the power connection mechanism.

Connect electric mechanism and set up the junction box in the cylinder below including fixed connection's conducting ring outside the cylinder, seted up a plurality of shaft holes on the junction box, be equipped with the electrode shaft in the shaft hole, electrode shaft upper end fixedly connected with graphite block has the spring at the electrode shaft overcoat, and spring one end is supported and is leaned on the junction box, and one end promotes the graphite block and leans on the electrode ring in the conducting ring in addition.

Still including setting up the row's material pipe in cylinder one side, arrange the material pipe and pass through the bell pipe and cylinder switch-on, arrange material pipe one end and insert in keeping off gas cover one end, it has the discharging pipe to keep off the other one end intercommunication of gas cover, the cable passes the cylinder in proper order, the bell pipe, arrange the material pipe, keep off gas cover and discharging pipe, it is equipped with labyrinth seal structure to arrange between material pipe and the gas cover, the intercommunication has the blast pipe on keeping off the gas cover, keep away from at the cylinder and keep off gas cover one end internal fixation and be equipped with the multi-disc flabellum, each flabellum is round cylinder axis evenly distributed.

A rubber pipe is arranged in the discharge pipe, and a plurality of circles of flanges extending inwards are arranged on the inner wall of the rubber pipe.

The beneficial effects of the invention are as follows:

1. firstly, the ultraviolet lamp tube is fixed in the roller, the roller drives the ultraviolet lamp tube to rotate around the cable, the rotating ultraviolet lamp tube is utilized to carry out irradiation curing on the cable, the surface of the cable is uniformly irradiated by ultraviolet light, and the surface curing of the cable is more uniform.

2. Utilize the rotation of cylinder, with the suction of outside air to the cylinder in, the flue gas that produces the cross-linking reaction is pumped and is sent the blast pipe and discharge, has reduced the equipment maintenance cost, and the flue gas is concentrated harmless and is discharged.

Drawings

The invention is further described below with reference to the accompanying drawings:

figure 1 is a front view of the present invention,

FIG. 2 is a schematic cross-sectional view taken along line A-A in FIG. 1,

FIG. 3 is a schematic cross-sectional view of the present invention,

figure 4 is a schematic view of a partially enlarged structure of the present invention,

figure 5 is a schematic view of a partially enlarged structure of the present invention,

fig. 6 is a schematic structural diagram of radiation curing of a crosslinked cable in the prior art.

In the figure: the device comprises a conducting ring 1, a roller bracket 2, a roller 3, a conical tube 4, a discharge tube 5, an air blocking cover 6, an exhaust tube 7, a discharge tube 8, a support 9, a lamp holder 10, a reflecting cover 11, a cable 12, an ultraviolet lamp tube 13, fan blades 14, a rubber tube 15, a labyrinth sealing structure 16, a graphite block 17, a spring 18, an electrode shaft 19 and a junction box 20.

Detailed Description

As shown in fig. 1 to 5, a cross-linked cable ultraviolet irradiation device comprises a plurality of roller brackets 2, a roller 3 is arranged on the plurality of roller brackets 2, a cable passes through the center of the roller 3, three rows of reflectors 11 are fixedly arranged in the roller 3, the reflectors 11 are uniformly distributed around the axis of the roller 3, the reflectors 11 are fixedly connected with the roller 3 through a bracket 9, a lamp holder 10 is arranged in each reflector 11, an ultraviolet lamp tube 13 is arranged on the lamp holder 10, one end of the roller 3 is provided with a power connection mechanism, and the ultraviolet lamp tube 13 is connected with a power supply through the power connection mechanism.

Connect electric mechanism including fixed connection at the outer conducting ring 1 of cylinder 3 and the junction box 20 of setting in the cylinder 3 below, junction box 20 adopts the bakelite to make, a plurality of shaft holes have been seted up on junction box 20, be equipped with the electrode shaft 19 that the brass was made in the shaft hole, electrode shaft 19 upper end fixedly connected with graphite block 17, at electrode shaft 19 overcoat spring 18, spring 18 one end is supported and is leaned on junction box 20, one end promotes graphite block 17 and leans on the electrode ring in conducting ring 1 in addition, the electrode ring passes through wire and ultraviolet fluorescent tube 13 electric connection. The structure can supply power to the ultraviolet lamp tube 13 when the roller 3 rotates, and the phenomenon of winding of the conducting wire can not occur.

The working process of the invention is as follows: after the cable enters the roller 3, the ultraviolet lamp tube 13 is connected with a power supply, meanwhile, the roller bracket 2 drives the roller 3 to rotate, the roller 3 drives the ultraviolet lamp tube 13 to carry out ultraviolet irradiation curing on the cable, and the ultraviolet lamp tube 13 is always in a rotating state, so that the irradiation intensity on each part of the surface of the cable is consistent, the cable curing is more uniform, the device is simple in structure, and the use is safe and reliable.

Still including setting up row material pipe 5 in 3 one sides of cylinder, row material pipe 5 is put through toper pipe 4 and 3 switchings of cylinder, row material pipe 5 one end is inserted in 6 one ends of fender gas hood, the other one end intercommunication of fender gas hood 6 has discharging pipe 8, the cable passes cylinder 3 in proper order, toper pipe 4, row material pipe 5, fender gas hood 6 and discharging pipe 8, row material pipe 5 and keep off and be equipped with labyrinth seal structure 16 between the gas hood 6, the intercommunication has blast pipe 7 on keeping off gas hood 6, keep away from at cylinder 3 and keep off gas hood 6 one end internal fixation and be equipped with multi-disc flabellum 14, each flabellum 14 is round 3 axis evenly distributed of cylinder.

Be equipped with rubber tube 15 in the discharging pipe, be equipped with many rings at rubber tube 15 inner wall and inwards extend the cross-section and be triangle-shaped flange, the flange pastes on the cable surface, prevents that the flue gas from overflowing from the clearance between cable and the discharging pipe.

Under the irradiation of the ultraviolet lamp tube 13, the cable is subjected to a crosslinking reaction by the insulating layer of the irradiated cable, and in the process, because the auxiliary agent, the crosslinking agent and the like in the insulating layer of the irradiated cable are volatilized to generate a large amount of smoke, the smoke exhaust structure is arranged, and the working process is as follows: the rotating drum 3 drives the fan blades 14 to rotate, the rotating fan blades 14 pump outside air into the drum 3, the outside air pushes flue gas to the exhaust pipe, and the exhaust pipe introduces the flue gas into an air purifier (not shown in the figure) and then exhausts the flue gas. In addition, in order to prevent the smoke from being discharged from the gap between the gas-blocking cover 6 and the discharge pipe 5, a labyrinth structure 16 is provided between the discharge pipe 5 and the gas-blocking cover 6 to seal the gap and ensure the discharge pipe 5 to be rotatable.

Claims

1. A crosslinked cable ultraviolet light irradiation device is characterized in that: including many gyro wheel brackets (2), cylinder (3) set up on many gyro wheel brackets (2), the cable passes from cylinder (3) center, be equipped with multirow reflector (11) at cylinder (3) internal fixation, each row reflector (11) are round cylinder (3) axis evenly distributed, each reflector (11) pass through support and cylinder (3) fixed connection, be equipped with lamp stand (10) in reflector (11), be equipped with ultraviolet fluorescent tube (13) on lamp stand (10), be equipped with at cylinder (3) one end and be used for connecing the electric mechanism, ultraviolet fluorescent tube (13) are connected with the power through connecing the electric mechanism.

2. The crosslinked cable ultraviolet radiation apparatus of claim 1, wherein: connect electric mechanism including fixed connection conducting ring (1) outside cylinder (3) and junction box (20) of setting in cylinder (3) below, a plurality of shaft holes have been seted up on junction box (20), be equipped with electrode shaft (19) in the shaft hole, electrode shaft (19) upper end fixedly connected with graphite block (17), spring (18) have been overcoat in electrode shaft (19), spring (18) one end is supported and is leaned on junction box (20), other end promotes graphite block (17) and leans on the electrode ring in conducting ring (1), the electrode ring passes through wire and ultraviolet lamp (13) electric connection.

3. The crosslinked cable ultraviolet irradiation apparatus according to claim 1 or 2, wherein: still including arranging row material pipe (5) that sets up in cylinder (3) one side, arrange material pipe (5) and cylinder (3) switch-on through toper pipe (4), arrange material pipe (5) one end and insert in keeping off gas cover (6) one end, it has discharging pipe (8) to keep off gas cover (6) other one end intercommunication, the cable passes cylinder (3) in proper order, toper pipe (4), arrange material pipe (5), keep off gas cover and discharging pipe, it is equipped with labyrinth seal structure (16) to arrange between material pipe (5) and the gas cover (6), it has blast pipe (7) to communicate on keeping off gas cover (6), keep away from gas cover (6) one end internal fixation at cylinder (3) and be equipped with multi-disc flabellum (14), each flabellum (14) are round cylinder (3) axis evenly distributed.

4. The ultraviolet irradiation device for crosslinked cable according to claim 3, wherein: a rubber pipe (15) is arranged in the discharge pipe, and a plurality of circles of flanges extending inwards are arranged on the inner wall of the rubber pipe (15).

5. A method of using the ultraviolet light irradiation apparatus for crosslinking cable according to claim 3, characterized in that: pass cylinder (3) including the cable in proper order, conical tube (4), row material pipe (5), keep off gas cover and discharging pipe, it is rotatory that gyro wheel bracket (2) drive cylinder (3), ultraviolet fluorescent tube (13) are rotatory round the cable in cylinder (3), rotatory in-process carries out ultraviolet irradiation to the cable surface, rotatory flabellum (14) simultaneously with the outside air suction to cylinder (3) in, carry out refrigerated when ultraviolet fluorescent tube (13), take out the flue gas that the cross-linking reaction produced and send the blast pipe discharge to.