CN205303005U - Flexible water cooled cable - Google Patents

Abstract

The utility model discloses a flexible water-cooled cable, which comprises a conductor located in the center of the cable, a diameter-expanding support is arranged inside the conductor, a high temperature and high pressure resistant steel wire wound rubber hose sheath is extruded outside the conductor, and a high temperature and high pressure resistant steel wire wound rubber hose The sheath is also equipped with a protective layer of high temperature resistant and flame retardant asbestos cloth. This cable optimizes the cooling performance, load capacity, and service life of the existing water-cooled cable. By adding a central stainless steel pressure spring, it not only makes the cooling channel smoother, but also forms a diameter-expanding structure, which can effectively cool down the entire line; The enamelled round copper wire after softening treatment not only improves its flex resistance, but also forms a split conductor structure, without skin effect, reduces wire loss, improves load capacity, and is protected by insulating paint film to prevent conductors from being in contact with cooling water for a long time Corrosion is formed to ensure the safe and reliable operation of the line.

Description

A flexible water-cooled cable

technical field

The utility model relates to the field of wires and cables, in particular to a flexible water-cooled cable suitable for use in a high-temperature environment in the metallurgical industry.

Background technique

Water-cooled cables widely used in the metallurgical industry generally have the following two shortcomings:

1. Use bare copper wires to make water-cooled cables. When the water-cooled cables are used for a period of time, a layer of green copper rust will form on the surface of the wires, which will damage the mechanical and physical properties of the material and shorten the service life; this is the bare copper wire and cooling water during the operation of the cable. It is caused by a chemical reaction; this is due to the fact that the bare copper wire conductor is carried out in cooling water, which inevitably brings in oxygen, carbon dioxide, etc., and the presence of water vapor, forming basic copper carbonate CuCO ₃ ·Cu(OH) ₂ .

2. The water-cooled medium circulation of the cable generally flows on the surface, and the skin effect of the cable conductor produces eddy current loss, the cooling capacity is weak, and the load capacity of the cable is reduced; The bigger it is, the more obvious its skin effect is, which is caused by the design itself.

Utility model content

In order to overcome the deficiencies in the prior art, provide a flexible water-cooled cable suitable for use in the high-temperature environment of the metallurgical industry, which improves the cooling performance, load capacity, and flex resistance of the cable, has no skin effect, and reduces line loss. Increased service life.

In order to achieve the above purpose, the utility model provides a flexible water-cooled cable, which includes a conductor located in the center of the cable, a diameter-expanding support is arranged inside the conductor, and a high-temperature and high-pressure steel wire wound hose sheath is extruded outside the conductor. The sheath of the high-pressure steel wire wound rubber hose is also equipped with a protective layer of high-temperature resistant and flame-retardant asbestos cloth.

Preferably, the conductor is twisted from softened enamelled round copper wire bundles.

Preferably, the diameter-expanding support is a stainless steel pressure spring. During operation, the cooling water can not only cool the outer surface of the conductor, but also cool the inside of the conductor through the center of the stainless steel pressure spring and the gap between the stainless steel pressure springs, increasing The cooling area of the wire is enlarged, the water channel is unimpeded, there is no cooling dead zone, and the problem of heat dissipation in the center of the large-section cable is solved, which can improve the cooling effect and load capacity.

Preferably, the high temperature and high pressure resistant steel wire wound rubber hose sheath is composed of a high temperature and high pressure resistant steel wire wound rubber hose base and a nano refractory paint layer coated outside the high temperature and high pressure resistant steel wire wound rubber hose base.

The design principle of the utility model is: this product optimizes the cooling performance, load capacity and service life of the existing water-cooled cables. By adding a central stainless steel pressure spring, it not only makes the cooling channel smoother, but also forms a diameter-expanding structure, which can Effective cooling of the entire line; the use of softened enamelled round copper wire not only improves its flex resistance, but also forms a split conductor structure without skin effect, reduces line loss, improves load capacity, and is protected by insulating paint film. Avoid conductor corrosion due to long-term contact with cooling water, and ensure safe and reliable operation of the line.

The beneficial effects of the utility model are:

1. By adding a stainless steel pressure spring in the center of the conductor as a diameter-expanding support, it not only makes the cooling channel smoother, but also forms a diameter-expanding structure, which can not only effectively cool the entire circuit, but also improve the cooling performance, load capacity, and use of the water-cooled cable. Lifespan and other aspects have been optimized;

2. The softened enamelled round copper wire is loosely wound, which not only improves its flex resistance, but also forms a split conductor structure, conducts intermediate frequency and high frequency current, has no skin effect, reduces line loss and increases load Compared with other water-cooled cables with the same cross-section, when the same current passes through, the calorific value is less, the cooling energy consumption is low, and the insulating paint film has the effect of anti-corrosion and anti-corrosion, and the service life of the product is improved; in addition, the insulating paint film is protected to avoid conductors Corrosion due to long-term contact with cooling water ensures safe and reliable operation of the line;

3. The sheath adopts high temperature and high pressure resistant steel wire braided rubber hose as the substrate, the breakdown voltage is higher than 3000V, and the maximum working pressure can reach 8MPa, which increases the cooling pressure.

4. The protective layer is made of high temperature resistant and flame retardant asbestos cloth to prevent splashing high temperature objects from scalding the sheath.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, further set forth the utility model, should be understood that these embodiments are only used for illustrating the utility model and are not intended to limit the scope of the utility model, after having read the utility model, those skilled in the art will understand this utility model The modifications of various equivalent forms of the utility model all fall within the scope defined by the appended claims of the present application.

As shown in Figure 1, the utility model provides a flexible water-cooled cable. A stainless steel pressure spring is used as a diameter-expanding support 1 in the center of the cable. By adding a central stainless steel pressure spring, not only the cooling channel is smoother, but also A diameter-expanding structure is formed, which can effectively cool down the entire circuit; then, the conductor 2 formed by twisting the softened enamelled round copper wire bundle is re-twisted on the central diameter-expanding support 1, and the softened enamelled round copper wire is used. It not only improves its flex resistance, but also forms a split conductor structure without skin effect, reduces line loss, improves load capacity, and is protected by insulating paint film to avoid corrosion of conductors due to long-term contact with cooling water, ensuring safe and reliable operation of the line The conductor 2 is extruded with a high temperature and high pressure steel wire winding rubber hose sheath, and the high temperature and high pressure steel wire winding rubber hose sheath is also provided with a high temperature resistant flame retardant asbestos cloth protective layer 5 to prevent splashing high temperature objects from scalding the rubber hose sheath.

Wherein, the high temperature and high pressure resistant steel wire wound rubber hose sheath is composed of a high temperature and high pressure resistant steel wire wound rubber hose base 3 and a nano refractory coating layer 4 coated outside the high temperature and high pressure resistant steel wire wound rubber hose base, and the maximum working pressure can reach 8MPa, which is Increase the cooling pressure and use forced cooling to provide pre-design.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, on the premise of not departing from the principle of the utility model, some modifications and improvements can also be made, and these should also be considered For belonging to the scope of protection of the present utility model.

Claims (4)

1. a flexible water-cooled cable; including the conductor (2) being positioned at cable center; it is characterized in that: in conductor (2), be provided with expanding supporter (1); outside conductor (2), extrude high temperature high voltage resistant wire spirally-wound hose sheath, be additionally provided with heat-resistant fireproof asbestos cloth protective layer (5) at high temperature high voltage resistant wire spirally-wound hose sheath.

2. a kind of flexible water-cooled cable according to claim 1, it is characterised in that: described conductor (2) is twisted by the enamel insulated round copper wire bundle of softened process and forms.

3. a kind of flexible water-cooled cable according to claim 1, it is characterised in that: described expanding supporter (1) is stainless steel pressure spring.

4. a kind of flexible water-cooled cable according to claim 1, it is characterised in that: described high temperature high voltage resistant wire spirally-wound hose sheath is made up of high temperature high voltage resistant wire spirally-wound hose matrix (3) and nanometer flame-retardant coating layer (4) that is coated on outside high temperature high voltage resistant wire spirally-wound hose matrix.