CN219553273U

CN219553273U - Novel cold-resistant torsion-resistant special variable frequency cable for fan

Info

Publication number: CN219553273U
Application number: CN202223586435.8U
Authority: CN
Inventors: 秦道广; 季传林; 陈磊
Original assignee: SHANGHAI MORN ELECTRIC EQUIPMENT CO Ltd
Current assignee: SHANGHAI MORN ELECTRIC EQUIPMENT CO Ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-08-18
Anticipated expiration: 2032-12-31

Abstract

The utility model provides a novel special variable frequency cable for a cold-resistant torsion-resistant fan, wherein a power wire core and a twisting wire core are of concentric structures, so that the stability of the whole structure of the cable is improved, the torsion of the cable is improved, and the cable is not easy to break; the number of the conductors is increased, the diameter of the monofilaments is reduced, the wires are twisted in the same direction, and the flexibility and the bending property of the conductors are improved; the inner liner is extruded on the cable core, so that the stress uniformity of each power wire core in the cable core is improved, and the bending and torsion performances of the cable are improved; in addition, the outer sheath is made of high-strength novel chlorinated polyethylene mixed rubber material (CPE) with high-quality oil resistance, cold resistance, wear resistance and the like, so that the torsion resistance and cold resistance of the cable are enhanced, and the service life of the cable is prolonged.

Description

Novel cold-resistant torsion-resistant special variable frequency cable for fan

Technical Field

The utility model relates to the technical field of cables, in particular to a novel variable frequency cable special for a cold-resistant torsion-resistant fan.

Background

Wind has long been utilized by people, mainly by pumping water through windmills, grinding surfaces, etc. And it is inexhaustible. Wind energy is a clean and pollution-free renewable energy source, the wind power generation is very environment-friendly, the wind energy is huge, and the wind power generation is very suitable for coastal islands, grassland pastures, mountainous areas and high-altitude areas which are lack of water, fuel and inconvenient in transportation according to local conditions, and is very suitable for the large possibility. Therefore, the wind power generation is becoming the fastest growing energy project in the world, and is increasingly paid attention to all countries in the world. The wind power generation system has wide wind power distribution in China and wide market prospect for developing wind power generation, and simultaneously, china has implemented national wind power franchise demonstration projects for promoting wind power development, and the localization of fans is not less than 70%, and the final assembly is required to be finished in China. Although the wind power industry in China is rapidly developed in recent years and is strongly supported by China, a certain gap exists compared with foreign developed countries. Mainly represented in that the equipment used in the wind power industry mainly depends on import and has strong external dependence. As a matching product of wind power generation, namely a wind power cable, the requirements on the wind power plant are very high due to the special use environment of the wind power plant. The wind power cable for the wind power plant has the characteristics of excellent insulating electrical property, excellent mechanical property, high strength, good toughness, wear resistance, torsion resistance, oil resistance, water resistance, aging resistance, weather resistance, wind resistance, cold resistance, bacteria resistance, mildew resistance, corrosion resistance, ultraviolet resistance, environmental protection and the like, and the common flexible cable is widely applied in various wind power plants which are put into production at present and built, and has short service life. The special cable for wind power generation mainly depends on import, has high price, greatly improves the cost and is unfavorable for the development of wind power generation industry.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the problems existing in the prior art and providing a novel cold-resistant torsion-resistant variable frequency cable special for a fan. The novel electric energy transmission device has the characteristics of compact structure, good torsion resistance, cold resistance, oil resistance, wear resistance, stable electric energy transmission and the like.

In order to solve the problems, the utility model provides the following technical scheme:

the utility model provides a novel cold-resistant antitorque fan special variable frequency cable, cable cross-section is circular, and its outside cladding has the oversheath, and its characterized in that, the cable core includes power core and hank zero line core combination transposition and forms, and power core and hank zero line core are concentric structure, are stranded soft round copper wire stranded soft conductor, first isolation layer, insulating layer, semiconductive layer, double-deck compound zero line concentric layer of weaving from inside to outside in proper order.

Further, the cable core is formed by combining and twisting 3 power wire cores and a twisting zero wire core.

Furthermore, the power wire core and the zero wire core are of concentric structures and stranded in the same direction.

Compared with the prior art, the cable has the beneficial effects that the power wire core and the zero twisting wire core are concentric, so that the stability of the whole structure of the cable is improved, the torsion of the cable is improved, the cable is not easy to break, the bending and torsion performances of the cable are improved, in addition, the outer sheath is made of high-quality oil-resistant, cold-resistant, wear-resistant and other high-strength novel chlorinated polyethylene mixed rubber materials (CPE), the torsion resistance and cold-resistant performances of the cable are improved, and the service life of the cable is prolonged.

Drawings

Fig. 1 is a schematic cross-sectional structure of a novel cold-resistant torsion-resistant fan composite cable according to the present utility model.

Detailed Description

In order to better understand the purpose, structure and function of the utility model, the utility model provides a novel variable frequency cable special for a cold-resistant torsion-resistant fan, which is described in further detail below with reference to fig. 1.

As shown in fig. 1, the novel special variable frequency cable for the cold-resistant torsion-resistant fan is formed by combining and twisting three power wire cores and a twisting zero wire core from inside to outside to form a cable core, a filling and inner protective layer 6, a reinforcing isolation layer 7, a total shielding layer 8, a reinforcing isolation layer 7 and an outer protective sleeve layer 9. The cable cross section is circular, and the reinforcement layer is covered with cold-resistant and oil-resistant oversheath.

The cable core comprises three power wire cores and a zero wire core which are combined and twisted, the filling and inner protecting layer 6 is extruded at one time, two layers of wrapping reinforcing layers 7 are arranged outside the cable core, a total shielding layer 8 is arranged between the two layers of reinforcing isolating layers, and the outermost layer is coated with a cold-resistant and oil-resistant outer protecting sleeve 9. The power wire core and the zero wire core are of concentric structures, and are sequentially a plurality of soft round copper wires stranded soft conductors 1, a first isolation layer 2, an insulation layer 3, a semiconductive layer 4 and a double-layer composite braided zero wire concentric layer 5 from inside to outside.

The total shielding layer 8 in the middle of the two layers of reinforcing isolation layers 7 can effectively play a shielding role when the cable is thin to an external force effect, the reinforcing isolation layers can absorb force in the cavity formed between the two layers, damage to the cable core inside the cable caused by external force in operation is reduced, meanwhile, the reinforcing layers form an effective protection effect on the shielding layers, and the service life of the cable in the later period is prolonged. The power wire core and the zero twisting wire core are concentric, so that the stability of the whole structure of the cable is improved, the torsion of the cable is improved, the cable is not easy to break, the number of conductors is increased, the diameter of monofilaments is reduced, the wires are twisted in the same direction, and the flexibility and the bending property of the conductors are improved. The inner liner is extruded on the cable core, so that the stress uniformity of each power wire core in the cable core is improved, and the bending and torsion performances of the cable are improved. In addition, the outer sheath is made of high-strength novel chlorinated polyethylene mixed rubber material (CPE) with high-quality oil resistance, cold resistance, wear resistance and the like, so that the torsion resistance and cold resistance of the cable are enhanced, and the service life of the cable is prolonged.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the patent claims is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a novel cold-resistant antitorque fan special variable frequency cable, cable cross-section is circular, and its outside cladding has the oversheath, and its characterized in that, the cable core includes power core and hank zero line core combination transposition and forms, and power core and hank zero line core are concentric structure, are stranded soft round copper wire stranded soft conductor (1), first isolation layer (2), insulating layer (3), semiconductive layer (4), double-deck compound zero line concentric layer (5) of weaving from inside to outside in proper order.

2. The variable frequency cable special for the novel cold-resistant torsion-resistant fan according to claim 1, wherein the cable core is formed by combining and twisting 3 power wire cores and a twisting zero wire core.

3. The special variable frequency cable for the novel cold-resistant torsion-resistant fan according to claim 1, wherein the power wire core and the zero wire core are of a concentric structure and stranded in the same direction.

4. The special variable frequency cable for the novel cold-resistant torsion-resistant fan according to claim 2, wherein the outer side of the cable core is provided with a filling and inner protective layer (6) and an outer protective layer (9).

5. The special variable frequency cable for the novel cold-resistant torsion-resistant fan according to claim 4, wherein the outer side of the inner inter-layer is provided with two layers of reinforced isolation layers (7).

6. The novel cold-resistant torsion-resistant fan-dedicated variable frequency cable according to claim 3, wherein a total shielding layer (8) is arranged between the two reinforced isolation layers.