CN210692221U

CN210692221U - Cable armor preheating device

Info

Publication number: CN210692221U
Application number: CN201921624320.9U
Authority: CN
Inventors: 李苗
Original assignee: Deshengxiang Cable Co ltd
Current assignee: Deshengxiang Cable Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-06-05
Anticipated expiration: 2029-09-27

Abstract

The utility model relates to a cable production facility technical field especially relates to a cable armour preheating device. The device adopts intermediate frequency heating in the earlier stage to remove moisture of the armor and avoid air holes generated in the outer sheath in the extrusion process; high-frequency heating is adopted in the later stage, the temperature of the armor outer layer is only increased, the temperature rise of a wire core is avoided, and the binding force of the armor and the rubber sheath is enhanced; the adoption sets up the air inlet in the position that the equipment shell is close to both ends and lets in dry, clean air to set up the air outlet at equipment shell top, take away the steam that evaporates, make simultaneously keep certain normal pressure in the equipment shell, prevent the dirty air entering in the factory building, avoid adhesion such as dust on the armour or sneak into rubber sheath in, thereby improved the quality of cable.

Description

Cable armor preheating device

Technical Field

The utility model relates to a cable production facility technical field especially relates to a cable armour preheating device.

Background

The principle of the armor cable is that a layer of steel belt is wound outside a wire core to serve as a protective layer, so that the tensile strength and the compressive strength are enhanced, the service life is prolonged, and the anti-interference performance of the cable can be improved through shielding protection. The armor cable is widely applied to places with serious interference, frequent rat damage, lightning protection, explosion prevention and the like.

In the production process, the cable armor needs to be preheated after being wound outside the wire core and before being extruded with the rubber sheath, so that moisture is removed, air holes are prevented from being generated in the outer sheath in the extruding process, the adhesive force between the outer sheath and the armor can be improved, and the internal stress of the cable is reduced. At present, a plurality of manufacturers adopt a mode of preheating the armor, winding the armor outside a wire core, and extruding and coating a rubber sheath. Although moisture is removed from the armor after preheating, the armor will absorb some moisture in later processes, especially in rainy weather, and the armor will have reduced temperature to room temperature and will have poor bonding with the rubber jacket.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the cable armor preheating device is provided to remove moisture by adopting intermediate frequency heating in the early stage aiming at the technical defects; high-frequency heating is adopted in the later stage, the temperature of the armor outer layer is only increased, the temperature rise of a wire core is avoided, and the binding force of the armor and the rubber sheath is enhanced; the adoption sets up the air inlet in the position that equipment shell is close to both ends and lets in dry, clean air to set up the air outlet at equipment shell top, take away the steam that evaporates, make simultaneously keep certain normal pressure in the equipment shell, prevent the dirty air admission in the factory building.

In order to solve the above problems, the utility model adopts the following technical scheme: a cable armor preheating device includes an equipment enclosure; the equipment shell is fixed on the bracket; the left side surface and the right side surface of the equipment shell are respectively provided with a circular feed inlet and a circular discharge outlet; the left side in the equipment shell is provided with an annular intermediate frequency heater; the intermediate frequency heater is positioned on the right side of the feeding hole and is coaxial with the feeding hole; an intermediate frequency heater electrode is arranged at the lower part of the intermediate frequency heater; the intermediate frequency heater electrode penetrates out of the bottom of the equipment shell; a front protection device is arranged on the right side of the intermediate frequency heater; a humidity sensor is arranged on the top of the equipment shell and on the right side of the front protection device; a first temperature measuring instrument is arranged at the bottom of the equipment shell and on the right side of the front protection device; the right side in the equipment shell is provided with a circular high-frequency heater; the high-frequency heater is positioned on the left side of the discharge hole and is coaxial with the discharge hole; the lower part of the high-frequency heater is provided with a high-frequency heater electrode; the high-frequency heater electrode penetrates out of the bottom of the equipment shell; a rear protection device is arranged on the left side of the high-frequency heater; and a second temperature measuring instrument is arranged at the bottom of the equipment shell and on the right side of the high-frequency heater.

As a further improvement of the utility model, the left of equipment shell is provided with supporting roller.

As a further improvement of the utility model, the bottom surface of the equipment shell is provided with a front air inlet below the intermediate frequency heater; and a rear air inlet is formed in the bottom surface of the equipment shell below the position between the high-frequency heater and the rear protection device.

As a further improvement of the utility model, the top of the equipment shell is provided with an air outlet; the air outlet is located between the front air inlet and the rear air inlet.

As a further improvement of the utility model, the rear protection device has the same structure as the front protection device and comprises a support ring; two protective rollers are arranged inside the support ring; two fixing arms are arranged at the lower part of the support ring; the fixed arm is fixed on the bottom surface of the equipment shell.

As a further improvement of the utility model, the first thermometer and the second thermometer are infrared non-contact thermometers.

The utility model discloses a cable armour preheating device, adopt the intermediate frequency to armor and sinle silk heating to appropriate temperature in earlier stage, not only can remove the moisture of armor, can remove the moisture of filler moreover, avoid producing the gas pocket in the outer sheath in the crowded package process; high-frequency heating is adopted to heat only the outer layer of the armor in the later period, so that the heating efficiency is high and the energy is saved; the positive pressure is formed in the equipment by adopting dry and clean air, so that dust and the like are prevented from being adhered to the armor or mixed into the rubber sheath, and the quality of the cable is improved.

Drawings

FIG. 1 is a schematic diagram of a cable armor preheating device.

FIG. 2 is a schematic diagram of a front guard configuration for a cable armor preheating device.

In the figure: 1. a feed inlet; 2. an equipment housing; 3. an intermediate frequency heater; 4. a front guard; 5. a humidity sensor; 6. an air outlet; 7. a rear guard; 8. a high-frequency heater; 9. a discharge port; 10. a support; 11. a second temperature measuring instrument; 12. a high-frequency heater electrode; 13. a rear air inlet; 14. a first temperature measuring instrument; 15. An intermediate frequency heater electrode; 16. a front air inlet; 17. supporting the rollers; 18. winding the wire core of the armor; 41. A fixed arm; 42. a support ring; 43. and (5) protecting the roller.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-2, a cable armor preheating device includes an equipment enclosure 2 fixed to a support 10; a supporting roller 17 is arranged at the left of the equipment shell 2; the left side surface and the right side surface of the equipment shell 2 are respectively provided with a circular feed inlet 1 and a circular discharge outlet 9, and the axes of the feed inlet 1 and the discharge outlet 9 are positioned on the same horizontal line; the intermediate frequency heater 3 is positioned on the left side inside the equipment shell 2 and is positioned on the right side of the feeding hole 1; the intermediate frequency heater 3 is annular and coaxial with the feed port 1; the intermediate frequency heater electrode 15 is arranged at the lower part of the intermediate frequency heater 3 and penetrates out of the bottom of the equipment shell 2 so as to be connected with a power supply; the high-frequency heater 8 is positioned on the right side in the equipment shell 2 and on the left side of the discharge port 9, and the high-frequency heater 8 is annular and coaxial with the discharge port 9; the high-frequency heater electrode 12 is provided at the lower portion of the high-frequency heater 8 and penetrates out from the bottom of the apparatus case 2 so as to be connected to a power supply. A front protection device 4 is arranged on the right side of the intermediate frequency heater 3, and a rear protection device 7 is arranged on the left side of the high frequency heater 8; the rear guard 7 is identical in structure to the front guard 4 and includes a support ring 42; two protective rollers 43 are arranged inside the supporting ring 42; the lower part of the supporting ring 42 is provided with two fixing arms 41; the fixing arm 41 is fixed to the bottom surface of the device case 2. When the wire core 18 wound with the armor passing through the roller sags or bends, the roller can play a supporting role to prevent the medium-frequency heater 3 and the high-frequency heater 8 from being damaged. A front air inlet 16 is formed in the bottom surface of the equipment shell 2 below the intermediate frequency heater 3; the bottom surface of the equipment shell 2 is provided with a rear air inlet 13 below the position between the high-frequency heater 8 and the rear protective device 7, and the rear air inlet is used for introducing clean and dry air into the equipment shell 2 and forming positive pressure in the equipment shell 2 to prevent dirty air in a factory from entering. The top of the equipment shell 2 is provided with an air outlet 6; the air outlet 6 is located between the front intake port 16 and the rear intake port 13 and slightly closer to the rear intake port 13; the hot moisture emanating from the wire core 18, which is wrapped around the armor, rises and flows out of the outlet 6 under positive pressure. The top of the equipment shell 2 is provided with a humidity sensor 5 on the right side of the front protection device 4, the humidity sensor 5 is connected with a control computer and used for detecting the air humidity between the intermediate frequency heater 3 and the high frequency heater 8, and if the humidity is too high, the control computer increases the air flow of the front air inlet 16 and the rear air inlet 13 to reduce the air humidity. The bottom of the equipment shell 2 is provided with a first temperature measuring instrument 14 on the right side of the front protection device 4; a second temperature measuring instrument 11 is arranged at the bottom of the equipment shell 2 on the right side of the high-frequency heater 8, and both the temperature measuring instruments are infrared non-contact temperature measuring instruments and are connected to a control computer, so that the temperature of the armor can be directly measured; the control computer adjusts the power of the medium frequency heater 3 and the high frequency heater 8 in real time, so that the measured temperature meets the process requirements.

The utility model discloses a theory of operation and working process: as shown in fig. 1-2, the armor-wound wire core 18 prepared in the previous step sequentially passes through the feeding hole 1, the intermediate frequency heater 3, the front protection device 4, the rear protection device 7 and the high frequency heater 8 under the support of the support roller 17, and finally passes out of the discharging hole 9. When the wire core 18 wound with the armor passes through the intermediate frequency heater 3, the armor and the wire core are heated, the temperature rises to 50-70 ℃, water adsorbed by the armor and the cable filler begins to volatilize, and when the water reaches the high frequency heater 8, as a period of time passes, the water adsorbed on the armor and the cable filler is thoroughly removed, and the temperature of the water is also reduced; in the high-frequency heater 8, the surface layer of the armor was heated to 70 to 130 ℃ without a significant increase in the core temperature. The preheated armor-wrapped wire core 18 then enters the rubber jacket extrusion process.

The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, belongs to the common general knowledge in this field, and the utility model discloses mainly be used for protecting the machinery setting, so the utility model discloses no longer explain control mode and circuit connection in detail.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a cable armour preheating device, includes support (10) and fixes equipment shell (2) on it, two sides on the left and right of equipment shell (2) are provided with circular shape feed inlet (1) and discharge gate (9) respectively, its characterized in that: the left side in the equipment shell (2) is provided with a circular intermediate frequency heater (3); the intermediate frequency heater (3) is positioned on the right side of the feed port (1) and is coaxial with the feed port; a front protection device (4) is arranged on the right side of the intermediate frequency heater (3); a humidity sensor (5) is arranged on the top of the equipment shell (2) on the right side of the front protection device (4); a first temperature measuring instrument (14) is arranged at the bottom of the equipment shell (2) on the right side of the front protection device (4); a circular high-frequency heater (8) is arranged on the right side in the equipment shell (2); a rear protection device (7) is arranged on the left side of the high-frequency heater (8); and a second temperature measuring instrument (11) is arranged at the bottom of the equipment shell (2) on the right side of the high-frequency heater (8).

2. A cable armor preheating arrangement according to claim 1, wherein: and a supporting roller (17) is arranged on the left side of the equipment shell (2).

3. A cable armor preheating arrangement according to claim 1, wherein: a front air inlet (16) is formed in the bottom surface of the equipment shell (2) below the intermediate frequency heater (3); and a rear air inlet (13) is formed in the bottom surface of the equipment shell (2) below the position between the high-frequency heater (8) and the rear protection device (7).

4. A cable armor preheating arrangement according to claim 1, wherein: an air outlet (6) is formed in the top of the equipment shell (2); the air outlet (6) is positioned between the front air inlet (16) and the rear air inlet (13).

5. A cable armor preheating arrangement according to claim 1, wherein: the rear protection device (7) has the same structure as the front protection device (4) and comprises a support ring (42); two protective rollers (43) are arranged inside the support ring (42); two fixing arms (41) are arranged at the lower part of the support ring (42); the fixing arm (41) is fixed on the bottom surface of the equipment shell (2).

6. A cable armor preheating arrangement according to claim 1, wherein: the first thermometer (14) and the second thermometer (11) are infrared non-contact thermometers.