阅读说明：本技术 一种异型节能电力电缆 (Special-shaped energy-saving power cable ) 是由 周志 郑旭昭 张熙操 于 2020-05-18 设计创作，主要内容包括：本发明涉及特种电缆技术领域,尤其是一种异型节能电力电缆；它的橡胶护套截面外形符合水滴线曲线,具体来说是：其参数方程式：{(2Sin[t]+Sin[2t])/(5+4Cos[t]),-1-(2Cos[t]+Cos[2t])/(5+4Cos[t])}；其隐函数方程式：3x^4+x^2(4+4y+6y^2)＝(-4-3y)y^3；首先通过奇特的外形设计减少飞石撞击对电缆产生的伤害作用,而后通过填充非牛顿流体进一步降低撞击对电缆产生的形变幅度,可较大程度的提升电缆在采石场等特殊场合的使用寿命。(The invention relates to the technical field of special cables, in particular to a special-shaped energy-saving power cable; the cross section of the rubber sheath of the water-cooled generator conforms to the water drop line curve, and specifically comprises the following steps: the parameter equation is as follows: { (2Sin [ t ] + Sin [2t ])/(5+4Cos [ t ]), -1- (2Cos [ t ] + Cos [2t ])/(5+4Cos [ t ]) }; the implicit function equation is: 3x ^4+ x ^2(4+4y +6y ^2) (-4-3y) y ^ 3; firstly, the damage effect of flying stones on the cable is reduced through the peculiar appearance design, then the deformation amplitude of the cable caused by impact is further reduced by filling non-Newtonian fluid, and the service life of the cable in special occasions such as a quarry and the like can be greatly prolonged.)

1. The utility model provides an energy-conserving power cable of abnormal shape which characterized in that: the cross section of the rubber sheath of the water-jet type water-jet head conforms to the curve of a water drop line.

2. The profile energy-saving power cable according to claim 1, wherein: the water drop line curve is shown as the water drop line curve,

the parameter equation is as follows:

{(2Sin[t]+Sin[2t])/(5+4Cos[t]),-1-(2Cos[t]+Cos[2t])/(5+4Cos[t])}；

the implicit function equation is:

3x^4+x^2(4+4y+6y^2)＝(-4-3y)y^3。

3. the profile energy-saving power cable according to claim 2, wherein: the inner side of the rubber sheath is provided with a lead, and a heat-resistant PVC sleeve is arranged between the lead and the inner side of the rubber sheath.

4. The profile energy-saving power cable according to claim 3, wherein: and a buffer cavity is arranged in the rubber sheath and in the position in front of the lead, and non-Newtonian fluid is filled in the buffer cavity.

5. The profiled energy-saving power cable according to claim 4, wherein: the preparation method of the non-Newtonian fluid comprises the following steps:

mixing 100g/L aromatic polyether and 30g/L aliphatic diisocyanate, adding water to the rest to prepare 50L reaction liquid, stirring and reacting at the temperature of 100 ℃ for 1 hour to obtain a prepolymer with the viscosity of 2000-8000Pa & s (90 ℃); 30L of the prepolymer was mixed with 20g/L of butanediol, and the mixture was stirred at 100 ℃ to react, and after 2 hours, a non-Newtonian fluid was obtained.

6. The profiled energy-saving power cable according to claim 5, wherein: the rubber sheath is made of tear-resistant rubber, and the preparation method comprises the following steps:

s1, weighing raw materials, 100 parts of fluororubber, 6 parts of magnesium oxide, 6 parts of zinc oxide, 4 parts of calcium hydroxide, 2 parts of vulcanizing agent, 6 parts of wear-resistant filler, 1 part of release agent and 15 parts of reinforcing machine;

s2, uniformly mixing magnesium oxide, zinc oxide, calcium hydroxide, wear-resistant filler, a release agent and a reinforcing agent to obtain an auxiliary agent;

s3 plasticating the crude fluororubber in an internal mixer, adding a vulcanizing agent, uniformly mixing, and adding an auxiliary agent into the internal mixer for internal mixing;

s4, back-refining and thinly passing the mixture for 8-12 times on an open mill to obtain the mixed rubber, standing the mixed rubber for 24 hours, carrying out primary vulcanization on the mixed rubber according to a vulcanization curve, wherein the vulcanization pressure is 10-15 MPa, the vulcanization temperature is 170 ℃, the vulcanization time is 20min, carrying out secondary vulcanization in a hot air aging box, the vulcanization temperature is 230 ℃, the vulcanization time is 16 hours, and standing for 24 hours.

7. The profile energy-saving power cable according to claim 6, wherein: the lead is made of aluminum, and a Teflon layer is coated and solidified on the outer surface of the lead.

8. The profile energy-saving power cable according to claim 7, wherein: and a steel cable is arranged in the rubber sheath and at the rear part of the lead.

Technical Field

The invention relates to the technical field of special cables, in particular to a special-shaped energy-saving power cable.

Background

The special-shaped cable is also called as a special-shaped cable, and is a special cable with an improved section shape for adapting to special occasions. For example, some indoor cables have a square cross section or a flat cross section for stable placement, and are called special-shaped cables because of being distinguished from common round cross section cables.

In special occasions such as quarries where blasting is carried out all the year round, the cable is usually clamped into the wire slot so as to ensure that the cable is not damaged by flying stones generated by blasting. However, at some hollowed-out positions of the wire chase or the connecting positions between the wire chases, the wire chases still suffer from flying stones without the protection of the wire chases, and the wiring of the quarry often needs to be adjusted according to production (quarrying position), so that if the wire chases are all connected in a completely closed manner, the cost is huge, and the practicability is low.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the special-shaped cable which is not easy to break even if the special-shaped cable is attacked by flying stones.

The technical scheme of the invention is as follows:

the utility model provides an energy-conserving power cable of abnormal shape which characterized in that: the cross section of the rubber sheath of the water-cooled generator conforms to the water drop line curve, and specifically comprises the following steps:

the parameter equation is as follows:

{(2Sin[t]+Sin[2t])/(5+4Cos[t]),-1-(2Cos[t]+Cos[2t])/(5+4Cos[t])}；

the implicit function equation is:

3x ^4+ x ^2(4+4y +6y ^2) (-4-3y) y ^ 3. It is easy to understand that the big tiptoe of water droplet-shaped object head, when the head receives the striking, the ratio of head surface area and volume is very little, so the impact force is more the internal conduction to the afterbody (be difficult to produce more frequent shake or deformation), the ratio of afterbody surface area and volume is very big and along with the reduction (become sharp) of afterbody and grow, so can spread the impact to its external world of contact, can also consume the energy of striking through modes such as self shake, deformation. Because the content of the cable is a metal wire, the content is not deformed to cause the content to break, but the cable is deformed to cause tearing in a certain direction to expose the metal wire, and the design reduces the tearing effect of impact on the cable by gradually transmitting, dissipating and consuming energy.

Further, the inner side of the rubber sheath is provided with a lead, and a heat-resistant PVC sleeve is arranged between the lead and the inner side of the rubber sheath and has the function of preventing the lead from damaging the physicochemical property of the rubber sheath due to heating of a load.

Furthermore, a buffer cavity is arranged in the rubber sheath and in the position in front of the lead, and non-Newtonian fluid is filled in the buffer cavity. The non-Newtonian fluid has the advantages that the non-Newtonian fluid does not affect the winding and unwinding of the cable at ordinary times, but can generate strong impact resistance and does not generate large deformation when being subjected to external instant impact, so that the rubber sheath is prevented from being torn.

Specifically, the preparation method of the non-Newtonian fluid comprises the following steps:

mixing 100g/L aromatic polyether (containing C15 straight chain alkyl) and 30g/L aliphatic diisocyanate, adding water to the rest to prepare 50L reaction liquid, stirring and reacting at the temperature of 100 ℃, and obtaining a prepolymer with the viscosity of 2000-8000Pa & s (90 ℃) after 1 hour; 30L of the prepolymer was mixed with 20g/L of butanediol, and the mixture was stirred at 100 ℃ to react, and after 2 hours, a non-Newtonian fluid was obtained.

Specifically, the rubber sheath is made of tear-resistant rubber, and the preparation method comprises the following steps:

s1, weighing raw materials, 100 parts of fluororubber, 6 parts of magnesium oxide, 6 parts of zinc oxide, 4 parts of calcium hydroxide, 2 parts of vulcanizing agent, 6 parts of wear-resistant filler, 1 part of release agent and 15 parts of reinforcing machine;

s2, uniformly mixing magnesium oxide, zinc oxide, calcium hydroxide, wear-resistant filler, a release agent and a reinforcing agent to obtain an auxiliary agent;

s3 plasticating the crude fluororubber in an internal mixer, adding a vulcanizing agent (the vulcanizing agent is a composition of bisphenol AF, benzyltriphenylphosphonium chloride and epoxy resin), uniformly mixing, and adding an auxiliary agent into the internal mixer for internal mixing;

s4, back-refining and thinly passing the mixture for 8-12 times on an open mill to obtain the mixed rubber, standing the mixed rubber for 24 hours, carrying out primary vulcanization on the mixed rubber according to a vulcanization curve, wherein the vulcanization pressure is 10-15 MPa, the vulcanization temperature is 170 ℃, the vulcanization time is 20min, carrying out secondary vulcanization in a hot air aging box, the vulcanization temperature is 230 ℃, the vulcanization time is 16 hours, and standing for 24 hours.

In a preferred embodiment, the lead is made of aluminum, and the outer surface of the lead is coated and cured with a Teflon layer. Firstly, the Teflon is a good wire insulation material, and secondly, the Teflon material is used for realizing isolation between the wire and the heat-resistant PVC sleeve, so that heat transfer is further reduced, and direct friction is also reduced.

In a preferred embodiment, a steel cable is disposed within the rubber sheath and behind the wire. Since aluminum as a wire is not suitable for high-strength pulling, and a cable of a quarry is frequently changed in a wiring path, a worker often pulls the cable, and the arrangement of a steel cable reduces the burden of the aluminum wire.

The invention has the beneficial effects that: firstly, the damage effect of flying stones on the cable is reduced through the peculiar appearance design, then the deformation amplitude of the cable caused by impact is further reduced by filling non-Newtonian fluid, and the service life of the cable in special occasions such as a quarry and the like can be greatly prolonged. The invention only needs to dig a groove directly in the mud ground when laying the wires in the quarry, and can backfill the mud after paying off, and the big end faces upwards when paying off.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a graph of the cross-sectional profile of the rubber boot.

In the figure, 1, a rubber sheath; 2. a wire; 3. a layer of Teflon; 4. a heat-resistant PVC jacket; 5. a buffer chamber; 6. a steel cord.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings:

as shown in fig. 1 and 2, a special-shaped energy-saving power cable is characterized in that: the cross section of the rubber sheath of the water-cooled generator conforms to the water drop line curve, and specifically comprises the following steps:

the parameter equation is as follows:

{(2Sin[t]+Sin[2t])/(5+4Cos[t]),-1-(2Cos[t]+Cos[2t])/(5+4Cos[t])}；

the implicit function equation is:

3x ^4+ x ^2(4+4y +6y ^2) (-4-3y) y ^ 3. In this embodiment, Mathematica is used to calculate the equation of the drop shape curve, including a parametric equation, an implicit function equation, and a polar equation. Figure 2 is a plot of the water drop line plotted by the software.

The heat-resistant PVC sheath is arranged between the lead and the inner side of the rubber sheath and has the function of preventing the lead from damaging the physicochemical property of the rubber sheath due to heating of a load.

And a buffer cavity is arranged in the rubber sheath and in the position in front of the lead, and non-Newtonian fluid is filled in the buffer cavity. The non-Newtonian fluid has the advantages that the non-Newtonian fluid does not affect the winding and unwinding of the cable at ordinary times, but can generate strong impact resistance and does not generate large deformation when being subjected to external instant impact, so that the rubber sheath is prevented from being torn.

Specifically, the preparation method of the non-Newtonian fluid comprises the following steps:

mixing 100g/L aromatic polyether (containing C15 straight chain alkyl) and 30g/L aliphatic diisocyanate, adding water to the rest to prepare 50L reaction liquid, stirring and reacting at the temperature of 100 ℃, and obtaining a prepolymer with the viscosity of 2000-8000Pa & s (90 ℃) after 1 hour; 30L of the prepolymer was mixed with 20g/L of butanediol, and the mixture was stirred at 100 ℃ to react, and after 2 hours, a non-Newtonian fluid was obtained.

Specifically, the rubber sheath is made of tear-resistant rubber, and the preparation method comprises the following steps:

s1, weighing raw materials, 100 parts of fluororubber, 6 parts of magnesium oxide, 6 parts of zinc oxide, 4 parts of calcium hydroxide, 2 parts of vulcanizing agent, 6 parts of wear-resistant filler, 1 part of release agent and 15 parts of reinforcing machine;

s2, uniformly mixing magnesium oxide, zinc oxide, calcium hydroxide, wear-resistant filler, a release agent and a reinforcing agent to obtain an auxiliary agent;

s3 plasticating the crude fluororubber in an internal mixer, adding a vulcanizing agent (the vulcanizing agent is a composition of bisphenol AF, benzyltriphenylphosphonium chloride and epoxy resin), uniformly mixing, and adding an auxiliary agent into the internal mixer for internal mixing;

s4, back-refining and thinly passing the mixture for 8-12 times on an open mill to obtain the mixed rubber, standing the mixed rubber for 24 hours, carrying out primary vulcanization on the mixed rubber according to a vulcanization curve, wherein the vulcanization pressure is 10-15 MPa, the vulcanization temperature is 170 ℃, the vulcanization time is 20min, carrying out secondary vulcanization in a hot air aging box, the vulcanization temperature is 230 ℃, the vulcanization time is 16 hours, and standing for 24 hours.

The lead is made of aluminum, and a Teflon layer is coated and solidified on the outer surface of the lead. Firstly, the Teflon is a good wire insulation material, and secondly, the Teflon material is used for realizing isolation between the wire and the heat-resistant PVC sleeve, so that heat transfer is further reduced, and direct friction is also reduced.

And a steel cable is arranged in the rubber sheath and at the rear part of the lead. Since aluminum as a wire is not suitable for high-strength pulling, and a cable of a quarry is frequently changed in a wiring path, a worker often pulls the cable, and the arrangement of a steel cable reduces the burden of the aluminum wire.

The foregoing embodiments and description have been presented only to illustrate the principles and preferred embodiments of the invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as hereinafter claimed.