Energy-saving adhesive tape and electricity-saving method based on winding of energy-saving adhesive tape

Abstract

The invention discloses an energy-saving adhesive tape and a power-saving method based on winding of the energy-saving adhesive tape, the energy-saving adhesive tape is a composite adhesive tape composed of three layers, the composite adhesive tape comprises an insulating layer arranged on the top layer, a semi-conductive layer arranged on the middle layer and formed by mixing and melting various metals and a metal oxide, and a bonding layer arranged on the bottom layer; the invention discloses an energy-saving method based on winding of an energy-saving adhesive tape. The energy-saving method comprises the steps of confirming the current direction of a cable, confirming the winding direction of the adhesive tape, winding the energy-saving adhesive tape on the cable, confirming a winding point, confirming the number of turns of winding and confirming the width of a winding section. The power-saving device has the advantages of relatively low production cost and better power-saving effect.

Description

Technical Field

[0001] The invention belongs to the technical field of energy saving, and relates to an energy-saving adhesive tape and a power-saving method based on winding the energy-saving adhesive tape. Background Art

[0002] Wrapping energy-saving tape around cables to change the electric field distribution in the cables and thus reduce power loss is a new energy-saving technology.

[0003] For example, the technical solution disclosed in the Chinese patent application with application publication number CN115458245A, entitled "An energy-saving tape, a method for saving electricity based on winding energy-saving tape", discloses an energy-saving tape and a method for saving electricity based on winding energy-saving tape. The energy-saving tape includes aluminum foil and adhesive, wherein the components of the aluminum foil include: 0.50% silicon, 0.27% iron, 0.037% platinum, 0.03% gold, 0.03% zirconium, 1.07% fluorine, 0.03% argon, 0.01% titanium, and the rest is aluminum, the total is 100%. The method for saving electricity based on winding energy-saving tape includes the following steps: Step 1: confirm the current direction of the cable; Step 2: make a fist with the right hand, extend the thumb to point to the direction of the current; Step 3: follow the direction of the four fingers of the right hand as the winding direction, and wind the energy-saving tape on the cable. The power saving method proposed in the present invention does not require changing the existing power supply and load equipment, has a short construction period, and can minimize the impact on industrial production; the method of the present invention can help electrical circuits and loads reduce power consumption, and the power saving efficiency is as high as more than 10%.

[0004] The energy-saving tape using such technology and the power-saving method based on winding the energy-saving tape can certainly achieve the technical purpose of saving electricity, but there are the following shortcomings:

[0005] A. Since the main component of the energy-saving tape, aluminum foil, is a good conductor, it is no problem to wrap it around the cable to change the distribution of the electric field and thus save energy. However, the electric field distribution on the surface of the busbar is not uniform enough, and the energy-saving effect is not good enough;

[0006] B. Since the energy-saving tape is only wound at the beginning and end of each cable section in the electrical circuit, and the energy-saving tape is only wound at intervals in the middle, the electric field distribution on the busbar surface is not uniform enough, and the energy-saving effect is not good enough;

[0007] C. Since precious metals are mixed in energy-saving tapes, the cost is relatively high;

[0008] In summary, the power saving effect of the existing technology is not good enough, the production cost is relatively high, and the use effect is not ideal enough. Summary of the invention

[0009] In order to overcome the deficiencies of the prior art, the present invention provides an energy-saving tape with relatively low cost and better power-saving effect, and a power-saving method based on winding the energy-saving tape.

[0010] The technical solution adopted by the present invention to achieve the above-mentioned technical purpose is: an energy-saving tape, which is a composite tape composed of three layers, including an insulating layer arranged on the top layer, a semi-conductive layer arranged on the middle layer by mixing and melting multiple metals and a metal oxide, and an adhesive layer arranged on the bottom layer.

[0011] The multiple metals include aluminum, iron, nickel, and strontium; the one metal oxide is aluminum oxide; the semiconductive layer is a thin film layer formed by uniformly fusing 20 parts by weight of aluminum, 50 parts by weight of aluminum oxide, 8 parts by weight of iron, 1 part by weight of nickel, and 1 part by weight of strontium at a temperature not lower than 2054°C.

[0012] The multiple metals include copper, iron, nickel, and strontium, and the one metal oxide is copper oxide; the semiconductive layer is a thin film layer formed by uniformly fusing 20 parts by weight of copper, 47 parts by weight of copper oxide, 10 parts by weight of iron, 1 part by weight of nickel, and 1 part by weight of strontium at a temperature not lower than 1538°C.

[0013] The insulating layer is any one of oil paint, polyester paint, polyimide film, epoxy paint and Mara tape.

[0014] The power saving method based on winding energy-saving tape includes:

[0015] Step 1: Confirm the current direction of the cable; when it is AC, set the current direction from the power supply to the load;

[0016] Step 2: Make a fist with your right hand and point your thumb in the direction of the current;

[0017] Step 3: Wind the energy-saving tape on the cable in the direction of the four fingers of the right hand as the winding direction;

[0018] Step 4: The winding points on the cable are: the starting and ending points of each cable segment on the electrical circuit and the bending points of the cable segments where the bending degree of the cable is greater than 0.3;

[0019] Step 5: The number of turns is: if the cable voltage is equal to or lower than 380V, wrap the energy-saving tape around the cable 4 or 5 times; if the cable voltage is greater than 380V, wrap the energy-saving tape around the cable 6 or more times;

[0020] Step 6: The width of the winding section is: the width of the energy-saving tape wound in each section of cable is the same.

[0021] The beneficial effects of the present invention are:

[0022] A. Due to the use of a semi-conductive layer, the electric field distribution on the busbar surface can be more uniform, which can reduce excessive charge concentration, thereby adjusting the potential difference to a certain extent, guiding the originally uneven electric field to become more uniform, reducing the local excessive potential difference, reducing power loss, and avoiding problems such as insulation breakdown;

[0023] B. Since the semi-conductive layer is formed by melting a variety of relatively cheap metals and a metal oxide, the cost is relatively low;

[0024] C. Since the winding points on the cable are specifically set at the starting and ending points of each cable section on the electrical circuit and at the bending points of the cable section with a bending degree greater than 0.3, these three points are where the electric field is most likely to change suddenly. Through targeted settings, the power saving effect is better;

[0025] D. Since an insulating layer is also provided on the energy-saving tape, the electric field distribution of the upper and lower layers can be better evenly distributed when multiple layers are wound, and the power saving effect is better;

[0026] In summary, the present invention has relatively low production cost, better power saving effect and more ideal use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 is a schematic diagram of the adhesive tape of the present invention;

[0029] Figure 2 is a schematic diagram of a fully straight cable of the present invention;

[0030] Figure 3 is a schematic diagram of a cable containing arc segments according to the present invention;

[0031] Figure 4 is a schematic diagram of an arc segment cable.

[0032] The reference numerals in the accompanying drawings are as follows: composite tape 1, insulating layer 1A, semi-conductive layer 1B, adhesive layer 1C, cable arc segment vault height H, cable arc segment span distance L, DETAILED DESCRIPTION

[0033] Embodiment 1 of the present invention, as Figures 1 to 4 As shown, an energy-saving tape is a composite tape 1 composed of three layers, the composite tape 1 includes an insulating layer 1A arranged on the top layer, a semi-conductive layer 1B arranged on the middle layer and formed by melting multiple metals and a metal oxide, and an adhesive layer 1C arranged on the bottom layer.

[0034] The multiple metals include aluminum, iron, nickel, and strontium; the one metal oxide is aluminum oxide; the semiconductive layer 1B is a thin film layer formed by uniformly fusing 20 parts by weight of aluminum, 50 parts by weight of aluminum oxide, 8 parts by weight of iron, 1 part by weight of nickel, and 1 part by weight of strontium at a temperature not lower than 2054°C.

[0035] The insulating layer 1C is any one of oil paint, polyester paint, polyimide film, epoxy paint and Mara tape.

[0036] The power saving method based on winding energy-saving tape includes:

[0037] Step 1: Confirm the current direction of the cable; when it is AC, set the current direction from the power supply to the load;

[0038] Step 2: Make a fist with your right hand and point your thumb in the direction of the current;

[0039] Step 3: Wind the energy-saving tape on the cable in the direction of the four fingers of the right hand as the winding direction;

[0040] Step 4: The winding points on the cable are: the starting and ending points of each cable segment on the electrical circuit and the bending points of the cable segments with a curvature greater than 0.3; the curvature of the cable is the ratio of the cable arc segment arch height H to the cable arc segment span distance;

[0041] Step 5: The number of turns is: if the cable voltage is equal to or lower than 380V, wrap the energy-saving tape around the cable 4 or 5 times; if the cable voltage is greater than 380V, wrap the energy-saving tape around the cable 6 or more times:

[0042] Step 6: The width of the winding section is: the width of the energy-saving tape wound in each section of cable is the same.

[0043] Embodiment 2 of the present invention, as Figures 1 to 4 As shown, an energy-saving tape is a composite tape 1 composed of three layers, the composite tape 1 includes an insulating layer 1A arranged on the top layer, a semi-conductive layer 1B arranged on the middle layer and formed by melting multiple metals and a metal oxide, and an adhesive layer 1C arranged on the bottom layer.

[0044] The multiple metals include copper, iron, nickel, and strontium, and the one metal oxide is copper oxide; the semiconductive layer 1B is a thin film layer formed by uniformly fusing 20 parts by weight of copper, 47 parts by weight of copper oxide, 10 parts by weight of iron, 1 part by weight of nickel, and 1 part by weight of strontium at a temperature not lower than 1538°C.

[0045] The insulating layer 1C is any one of oil paint, polyester paint, polyimide film, epoxy paint and Mara tape.

[0046] The power saving method based on winding energy-saving tape includes:

[0047] Step 1: Confirm the current direction of the cable; when it is AC, set the current direction from the power supply to the load;

[0048] Step 2: Make a fist with your right hand and point your thumb in the direction of the current;

[0049] Step 3: Wind the energy-saving tape on the cable in the direction of the four fingers of the right hand as the winding direction;

[0050] Step 4: The winding points on the cable are: the starting and ending points of each cable segment on the electrical circuit and the bending points of the cable segments with a curvature greater than 0.3; the curvature of the cable is the ratio of the cable arc segment arch height H to the cable arc segment span distance;

[0051] Step 5: The number of turns is: if the cable voltage is equal to or lower than 380V, wrap the energy-saving tape around the cable 4 or 5 times; if the cable voltage is greater than 380V, wrap the energy-saving tape around the cable 6 or more times:

[0052] Step 6: The width of the winding section is: the width of the energy-saving tape wound in each section of cable is the same.

[0053] Further description of the present invention:

[0054] A. Description of the use of semi-conductive film:

[0055] Compared with the film layer composed of all conductive materials such as aluminum and copper, the semi-conductive film layer used in the present invention can better balance the distribution of the electric field on the cable due to its moderate conductivity. When the semi-conductive film is wrapped around the appropriate part of the busbar, it can make the electric field distribution on the surface of the busbar more uniform, thereby adjusting the potential difference to a certain extent, and can guide the originally uneven electric field to be relatively more uniform, reduce the local excessive potential difference, thereby saving energy and avoiding the problem of cable insulation breakdown caused by excessive local electric field.

[0056] The film layer composed of all-conductors does not have the characteristics of automatically adjusting the charge distribution according to the electric field conditions like the semi-conductive film, and cannot control the flow and distribution of the current to balance the potential. The semi-conductive metal film can selectively discharge or redistribute the charge in the area with high electric field strength based on its own semi-conductivity. The metal film layer composed of all-conductors lacks this selectivity and adjustment ability, and cannot well improve the potential difference caused by factors such as uneven electric field at both ends of the busbar. Excessive concentration of charge usually cannot save electricity, but may cause increased power loss. When the charge is concentrated, the electric field strength will be locally strengthened. In electrical systems such as cable busbars, this may cause partial discharge. Partial discharge is a discharge process in a local area of ​​an insulating medium, which consumes energy. In addition, charge concentration may also accelerate the aging and damage of insulating materials and reduce the insulation performance of the system. Once the insulation performance decreases, leakage and other situations may occur, resulting in additional power loss.

[0057] After being wrapped with semi-conductive film, the concentration of charges can be reduced. This is because the semi-conductive film has moderate conductivity. When the electric field around the cable bus is unevenly distributed and charge concentration may occur, the semi-conductive film can disperse the accumulated charges. It is like a buffer area, allowing the charges to be relatively evenly distributed on the cable surface, avoiding excessive charge density in local areas, thereby effectively balancing the electric field and reducing problems such as local discharge and insulation damage caused by excessive charge concentration. Reducing charge concentration can save electricity. When the charge is concentrated, the local electric field strength will be too high, which may cause local discharge. In this process, electrical energy will be consumed in the form of light, heat, etc. In addition, local discharge will accelerate the aging of insulating materials and reduce insulation performance. Once the insulation performance deteriorates, leakage is likely to occur, resulting in additional power loss.

[0058] By reducing charge concentration, such as using semi-conductive aluminum film to wrap the busbar, the electric field distribution can be made more uniform, thereby reducing the probability of local discharge and the risk of leakage, thereby reducing these additional energy losses and achieving the effect of saving electricity.

[0059] B. Explanation on the selection of energy-saving tape winding points:

[0060] In a section of busbar, the following locations are most likely to have charge concentration:

[0061] The end of the busbar: The electric field distribution at the end is easily distorted because the electric field lines at the end of the busbar diverge outward, unlike the relatively parallel and uniform electric field lines in the middle of the busbar, which makes it easy for charges to gather at the end. For example, at the end of the high-voltage busbar, the electric field strength will be relatively high and the charge concentration will be higher.

[0062] The bend of the busbar: When the busbar has a certain bend, the electric field lines will become relatively dense at the bend. Since the distribution of the electric field lines changes along the bend, the electric field strength in the bend area increases, and the charge is more likely to be concentrated there. Just like the speed of a river changes at a bend, the distribution of charge at the bend of the busbar will also change.

[0063] Junction of different media: When the busbar contacts the boundary of other insulating or conductive media, such as the part where the busbar enters from the air into the part wrapped by the insulator, the electric field distribution will change due to the difference in dielectric constants of different media, making it easy for charges to concentrate in this junction area.

[0064] C. Description of the composition of semi-conductive film materials:

[0065] Semiconductive aluminum film and semiconductive copper film each have their own advantages and disadvantages in reducing charge concentration.

[0066] At the same time, which film has better performance in reducing charge concentration depends on the use environment and specific requirements. For example, in situations where there are strict requirements on weight, semi-conductive aluminum film may be more suitable; while in high voltage and strong electric field environments where rapid charge evacuation is required, semi-conductive copper film may be a better choice. The power saving effect of ultra-soft aluminum soft magnetic material film wrapped cable is mainly based on the following principles:

[0067] Soft magnetic materials have the characteristics of high magnetic permeability. When current passes through the cable, a magnetic field is generated. After the film containing soft magnetic materials is wrapped around the cable, its high magnetic permeability can guide and concentrate the magnetic field. This can reduce the disordered divergence of the magnetic field around the cable and reduce the eddy current loss caused by magnetic field leakage.

[0068] Take iron as an example, it is easy to be magnetized and demagnetized. In an alternating current environment, the film containing soft magnetic materials will continuously change its magnetization direction as the direction of the current changes periodically. This change can constrain the magnetic field generated by the current in the cable, so that the electric energy is more concentratedly transmitted inside the cable, reducing unnecessary electromagnetic induction around the cable, thereby reducing energy loss and achieving the purpose of saving electricity.

[0069] At the same time, the synergistic effect of soft iron can optimize the soft magnetic properties. Adding nickel can improve the processing performance and some magnetic properties of the material, and adding strontium can enhance the material's ability to withstand high temperatures and stabilize magnetism. The combination of the three can better control the magnetic field, further reduce reactive power loss during cable operation, and ultimately achieve power saving.

[0070] The semi-conductive layer 1B of the present invention has semi-conductivity, soft magnetism, easy processability, durability and relatively low price through reasonable combination of components.

[0071] D. Instructions for setting the insulation layer of energy-saving tape:

[0072] The reasons for performing insulation treatment between layers in the present invention are as follows:

[0073] To avoid short circuit, if there is no insulation between layers and the upper and lower semi-conductive films are in direct contact, the current will flow directly between the layers and form a short circuit. The purpose of adjusting the potential difference and charge concentration through multi-layer films cannot be achieved, and other electrical problems may also occur, such as local overheating.

[0074] The potential difference can be controlled more accurately after the layers are insulated. The insulating layer can keep the potential between each layer of the semiconductive film independent, so that the potential difference can be controlled and adjusted more accurately, and the potential difference can be distributed and changed according to the design requirements to achieve a better adjustment effect. The insulating layer can also prevent the disordered leakage of charges between layers, so that the charges can be more concentratedly distributed on a specific level, which helps to improve the adjustment efficiency and effect of the charge concentration phenomenon.

Claims

1. An energy-saving tape, characterized in that: The energy-saving tape is a composite tape composed of three layers, including an insulating layer arranged on the top layer, a semiconductive layer arranged on the middle layer formed by melting multiple metals and a metal oxide, and an adhesive layer arranged on the bottom layer.

2. The energy-saving tape according to claim 1, characterized in that: The multiple metals include aluminum, iron, nickel, and strontium; the one metal oxide is aluminum oxide; the semiconductive layer is a thin film layer formed by uniformly fusing 20 parts by weight of aluminum, 50 parts by weight of aluminum oxide, 8 parts by weight of iron, 1 part by weight of nickel, and 1 part by weight of strontium at a temperature not lower than 2054°C.

3. The energy-saving tape according to claim 1, characterized in that: The multiple metals include copper, iron, nickel, and strontium, and the one metal oxide is copper oxide; the semiconductive layer is a thin film layer formed by uniformly fusing 20 parts by weight of copper, 47 parts by weight of copper oxide, 10 parts by weight of iron, 1 part by weight of nickel, and 1 part by weight of strontium at a temperature not lower than 1538°C.

4. The energy-saving tape according to any one of claims 1, 2 or 3, characterized in that: The insulating layer is any one of oil paint, polyester paint, polyimide film, epoxy paint and Mara tape.

5. A power saving method based on winding energy-saving tape, characterized in that: The winding methods of energy-saving tape include: Step 1: Confirm the current direction of the cable; when it is AC, set the current direction from the power supply to the load; Step 2: Make a fist with your right hand and point your thumb in the direction of the current; Step 3: Wind the energy-saving tape on the cable in the direction of the four fingers of the right hand as the winding direction; Step 4: The winding points on the cable are: the starting and ending points of each cable segment on the electrical circuit and the bending points of the cable segments where the bending degree of the cable is greater than 0.3; Step 5: The number of turns is: if the cable voltage is equal to or lower than 380V, wrap the energy-saving tape around the cable 4 or 5 times; if the cable voltage is greater than 380V, wrap the energy-saving tape around the cable 6 or more times: Step 6: The width of the winding section is: the width of the energy-saving tape wound in each section of cable is the same.

Images