CN216287699U

CN216287699U - Cold-resistant cable

Info

Publication number: CN216287699U
Application number: CN202122519872.7U
Authority: CN
Inventors: 王建国
Original assignee: Tianjin Shuran Cable Technology Co ltd
Current assignee: Tianjin Shuran Cable Technology Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-12
Anticipated expiration: 2031-10-19

Abstract

The utility model discloses a cold-resistant cable, which relates to the technical field of cables and comprises an inner sheath and a cable core penetrating through the inner sheath, wherein an outer sheath is sleeved outside the inner sheath, a first lead and a second lead are arranged in the outer sheath, a plurality of electric heating sheets are embedded in the outer sheath and electrically connected with the second lead, a second contact is electrically connected onto the electric heating sheets, a control cavity is formed in the outer sheath, a temperature sensing element is arranged in the control cavity, a first contact matched with the second contact for use is arranged on the temperature sensing element, and the first contact is electrically connected with the first lead. The cold-resistant cable provided by the utility model has reliable performance and strong tensile strength.

Description

Cold-resistant cable

Technical Field

The utility model relates to the technical field of cables, in particular to a cold-resistant cable.

Background

Electric energy or signal transmission can not be separated from the cable, in certain high latitude areas, the cable can be hardened and become brittle under the condition that the temperature is too low in winter, the outer skin of the cable can fall off and be damaged under the condition of external force, and the cable is easy to damage particularly under the use working condition that the cable needs to be bent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cold-resistant cable, after the temperature is reduced to a preset value, a temperature sensing element deforms, so that a first contact is in contact with a second contact, an electric heating sheet is connected, and the electric heating sheet generates heat to prevent the cable from being damaged.

The technical purpose of the utility model is realized by the following technical scheme:

the utility model provides a cold-resistant cable, includes the inner sheath and wears to locate the cable core in the inner sheath, the outside cover of inner sheath is equipped with the oversheath, be provided with first wire and second wire in the oversheath, it is equipped with a plurality of electric heating plates to inlay in the oversheath, electric heating plate and second wire electric connection, electric connection has the second contact on the electric heating plate, open in the oversheath and be equipped with the control chamber, be provided with temperature-sensing element in the control chamber, be provided with the first contact that uses with the cooperation of second contact on the temperature-sensing element, first contact and first wire electric connection.

By adopting the technical scheme, the first lead and the second lead are connected with the low-voltage power supply, and the first contact and the second contact are separated from each other under the common condition. After the temperature drops to the predetermined value, temperature-sensing element will take place to warp to make first contact and second contact, the electric heating plate and power switch-on this moment, electric heating plate will slowly generate heat, thereby guarantee that the cable can not receive the damage at low temperature. After the temperature rises to a normal value, the temperature sensing element is restored, so that the first contact point is disconnected from the second contact point, and the electric heating piece stops heating. The cable among the above-mentioned technical scheme can produce heat automatically at low temperature, prevents to freeze and damages, can use in the cold area of high latitude.

The utility model is further configured to: the outer side of the outer sheath is sleeved with a wear-resistant layer, and a fiber layer is fixedly arranged between the wear-resistant layer and the outer sheath.

Through adopting above-mentioned technical scheme, the wearing layer can strengthen the abrasive resistance of this cable, and the fibrous layer has heat retaining effect, can further strengthen the cold-resistant performance of this cable.

The utility model is further configured to: the fiber layer is made of polyester non-woven fabric.

By adopting the technical scheme, the polyester non-woven fabric has strong tensile capacity, and the tensile capacity of the cable can be effectively improved while the heat preservation is realized.

The utility model is further configured to: the electric heating piece is provided with a plurality of positioning holes, connecting columns penetrate through the positioning holes, and the connecting columns and the outer sheath are integrally formed.

Through adopting above-mentioned technical scheme, the spliced pole can fix a position the electric heater piece, guarantees that the electric heater piece can not produce the displacement in the outer sheath, also can strengthen the intensity of oversheath simultaneously.

The utility model is further configured to: the temperature sensing element is a bimetallic strip.

By adopting the technical scheme, the bimetallic strip has stronger deformation capability along with temperature and high sensitivity.

The utility model is further configured to: the first contact is of a long strip structure, one side of the first contact, which is close to the first lead, is fixedly provided with an elastic contact piece, and the contact piece is abutted against the first lead and can slide mutually.

Through adopting above-mentioned technical scheme, thereby the contact piece can contact with first wire and make first contact and first wire switch-on to the contact piece can with keep the oppression power between the first wire, guarantee to contact stably.

The utility model is further configured to: a protective shell is fixed in the control cavity and covers the temperature sensing element.

Through adopting above-mentioned technical scheme, the protective housing can form the guard action to temperature-sensing element to prevent that the cable from receiving damage by external force extrusion in-process temperature-sensing element.

In conclusion, the beneficial technical effects of the utility model are as follows:

(1) the cable is automatically heated by the electric heating sheet at low temperature, so that the good state of the cable in use in a low-temperature environment is ensured, and the cable is prevented from being damaged;

(2) the utility model utilizes the polyester non-woven fabric to insulate the cable, reduces the heat consumption of the cable, saves energy and effectively improves the tensile capacity of the cable.

Drawings

FIG. 1 is a schematic overall structure of one embodiment of the present invention;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Reference numerals: 1. a cable core; 2. an inner sheath; 3. an outer sheath; 4. a first conductive line; 5. a second conductive line; 6. an electrical heating sheet; 7. positioning holes; 8. connecting columns; 9. a second contact; 10. a control chamber; 11. a protective shell; 12. a bimetal; 13. a first contact; 14. a contact piece; 15. a fibrous layer; 16. and a wear-resistant layer.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying examples.

Referring to fig. 1, the cold-resistant cable comprises an inner sheath 2 and a plurality of cable cores 1 arranged in the inner sheath 2 in a penetrating mode, and gaps between the cable cores 1 and the inner sheath 2 are filled with rubber. The outer side cover of inner sheath 2 is equipped with oversheath 3, wears to be equipped with first wire 4 and second wire 5 along its axis direction in the oversheath 3, inlays in the oversheath 3 and is equipped with a plurality of electric heating plate 6, and electric heating plate 6 forms the cladding state to inner sheath 2, has seted up a plurality of locating holes 7 on the electric heating plate 6, wears to be equipped with spliced pole 8 in the locating hole 7, spliced pole 8 and 3 integrated into one piece of oversheath. The electric heating piece 6 is electrically connected with the second lead 5, and one side of the electric heating piece 6 far away from the second lead 5 is electrically connected with a second contact 9.

Referring to fig. 2, a control cavity 10 is formed in the outer sheath 3, the control cavity 10 is located outside the electric heating plate 6, a protective shell 11 is fixed in the control cavity 10, a temperature sensing element is fixedly arranged in the protective shell 11, the temperature sensing element is a bimetallic strip 12, a first contact 13 is fixedly arranged at a movable end of the bimetallic strip 12 in an insulating manner, the end of the second contact 9 extends into the control cavity 10, and after the bimetallic strip 12 is bent due to the reduction of the ambient temperature, the first contact 13 can be in contact with the second contact 9. The first contact 13 is a strip structure, and one side of the first contact 13 close to the first conducting wire 4 is fixedly provided with an elastic contact piece 14, and the contact piece 14 is abutted against the first conducting wire 4 and can slide mutually.

The fixed fibrous layer 15 that is provided with in outside of oversheath 3, this fibrous layer 15's material is dacron non-woven fabrics, when playing the heat preservation effect to the cable, effectively improves the tensile strength of cable. The outer side of the fiber layer 15 is fixedly provided with a wear-resistant layer 16 which plays a role in protecting the internal structure of the cable.

The working principle of the embodiment is as follows: in use, the first and second conductors 4, 5 are connected to a low voltage power supply and the first and second contacts 13, 9 are normally separated from each other. When the temperature is lowered to a predetermined value in a low temperature environment, the bimetal strip 12 will bend, so that the first contact 13 is in contact with the second contact 9, the electric heating strip 6 is connected to the power supply, the electric heating strip 6 will slowly generate heat, and after the temperature is raised to a normal value, the first contact 13 is disconnected from the second contact 9, and the electric heating strip 6 stops heating. Therefore, the cable can automatically generate heat at a low temperature to perform self protection, prevent damage caused by freezing and can be used in cold regions at high latitudes.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a cold-resistant cable, includes inner sheath (2) and wears to locate cable core (1) in inner sheath (2), its characterized in that: the utility model discloses a temperature sensing device, including inner sheath (2), outer sheath (2), be provided with first wire (4) and second wire (5) in outer sheath (3), it is equipped with a plurality of electric heating plate (6) to inlay in outer sheath (3), electric heating plate (6) and second wire (5) electric connection, electric connection has second contact (9) on electric heating plate (6), it has control chamber (10) to open in outer sheath (3), be provided with temperature sensing element in control chamber (10), be provided with on the temperature sensing element first contact (13) that use with second contact (9) cooperation, first contact (13) and first wire (4) electric connection.

2. The cold-resistant cable according to claim 1, wherein: the outer side of the outer sheath (3) is sleeved with a wear-resistant layer (16), and a fiber layer (15) is fixedly arranged between the wear-resistant layer (16) and the outer sheath (3).

3. The cold-resistant cable according to claim 2, wherein: the fiber layer (15) is made of polyester non-woven fabric.

4. The cold-resistant cable according to claim 1, wherein: a plurality of positioning holes (7) are formed in the electric heating sheet (6), connecting columns (8) penetrate through the positioning holes (7), and the connecting columns (8) and the outer sheath (3) are integrally formed.

5. The cold-resistant cable according to claim 1, wherein: the temperature sensing element is a bimetallic strip (12).

6. The cold-resistant cable according to claim 1, wherein: the first contact (13) is of a long strip structure, one side, close to the first lead (4), of the first contact (13) is fixedly provided with an elastic contact piece (14), and the contact piece (14) is abutted to the first lead (4) and can slide mutually.

7. The cold-resistant cable according to claim 1, wherein: a protective shell (11) is fixed in the control cavity (10), and the protective shell (11) covers the temperature sensing element.