CN110415906B

CN110415906B - Self-cleaning type nanometer glaze porcelain umbrella-shaped insulator for coastal area

Info

Publication number: CN110415906B
Application number: CN201910715769.4A
Authority: CN
Inventors: 罗杰
Original assignee: Jiangsu Nanci Insulators Co ltd
Current assignee: Jiangsu Nanci Insulators Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2021-02-12
Anticipated expiration: 2039-08-02
Also published as: CN110415906A

Abstract

The invention discloses a self-cleaning type umbrella-shaped insulator of nano glazed porcelain for coastal areas, belonging to the technical field of electrical ceramics. Including plug, first order full skirt, second level full skirt and third level full skirt, both ends are equipped with the metal accessories about the plug, and first order full skirt has two, locates respectively and is close to left and right metal accessories department, is equipped with a plurality of groups second level full skirt and third level full skirt between two first level full skirts, just second level full skirt and third level full skirt set up in turn, and the plug surface material is self-cleaning nanometer glaze. The surface glaze used by the insulator is a ceramic glaze which is famous for super water resistance, and can play an irreplaceable role in the aspects of pollution prevention, mould prevention, water resistance, snow prevention, ice prevention and the like; set up multistage full skirt, increase first order full skirt umbrella interval and stretch out, improve the product from tying up nature and prevent rainfall capacity, reasonable big small umbrella inclination guarantees that the umbrella disk surface sleet is not detained, and filthy few accumulation, self-cleaning nature improves.

Description

Self-cleaning type nanometer glaze porcelain umbrella-shaped insulator for coastal area

Technical Field

The invention belongs to the technical field of electrical ceramics, and particularly relates to a self-cleaning type nano glaze porcelain umbrella-shaped insulator for coastal areas.

Background

The coastline (continental coastline and island coastline) of our country extends for 3 kilometres or more, with the continental coastline being 1.8 kilometres. Catenary lines in coastal areas and islands are also subject to salt spray for a long time. Pollution sources in coastal areas: mainly salt fog from sea, dust from offshore and industrial smoke dust, and is characterized by small ash density and relatively large salt density, and the salt mainly comprises monovalent easily soluble inorganic salt. Salt-containing water drops or seawater foam blown from seasides subsides on the surface of the insulator along with the wind direction in the advancing process, the temperature is higher due to direct sunlight in the daytime, and the water of the salt-containing water drops or the seawater foam is evaporated so that salt-containing dirt is firmly adsorbed on the surface of the insulator. At night, the temperature drops, the solubility of salt in water also drops, sea salt is likely to be crystallized and subside on the surface of the insulator along with the wind direction in the process, so that pollution flashover occurs on the line, and the pollution flashover is a great threat to the safe operation of a power grid. Because pollution flashover accident's harmfulness is big, the area is wide, and a big accident often can cause many circuits in same region to trip simultaneously, therefore the electric power department has prevented pollution flashover accident and has guaranteed the important work of safe operation as electric power system, and the performance of insulator so will directly influence the emergence of pollution flashover condition, and the insulator among the prior art is relatively weak in this performance of aspect.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the defects in the prior art, the invention aims to provide a self-cleaning type nano glaze umbrella-shaped porcelain insulator for coastal areas, which has the characteristics of long-term effective durability, self-cleaning function and long service life.

The technical scheme is as follows: in order to solve the problems, the technical scheme adopted by the invention is as follows:

a self-cleaning type nano glaze porcelain umbrella-shaped insulator for coastal areas comprises a core rod, two first-stage umbrella skirts, two second-stage umbrella skirts and three third-stage umbrella skirts, wherein metal accessories are arranged at the left end and the right end of the core rod, the two first-stage umbrella skirts are respectively arranged close to the left metal accessory and the right metal accessory, a plurality of groups of second-stage umbrella skirts and third-stage umbrella skirts are arranged between the two first-stage umbrella skirts, and the second-stage umbrella skirts and the third-stage umbrella skirts are alternately arranged; the diameter of the first-stage umbrella skirt is 200-220mm, the diameter of the second-stage umbrella skirt is 150-180mm, and the diameter of the third-stage umbrella skirt is 130-145 mm; the minimum distance between the first-stage umbrella skirt and the second-stage umbrella skirt is 30-50mm, and the minimum distance between the first-stage umbrella skirt and the third-stage umbrella skirt is 80-100 mm; the surface of the core rod is made of self-cleaning nano glaze. The umbrella skirt is arranged by arranging the umbrella skirt with the largest diameter close to the left and right metal accessories, so that the operation accidents such as electrical bridging and the like caused by heavy rain are thoroughly solved, and the umbrella skirt has excellent antifouling performance. The distance between the first-stage umbrella skirt and the first-stage umbrella skirt is increased, and the self-tying performance and the strong rainfall prevention capability of the product are improved.

The self-cleaning nano glaze porcelain umbrella-shaped insulator is used in the coastal region, and the ratio of the umbrella space of the umbrella skirt to the extending length of the umbrella is 0.6-0.8.

The self-cleaning type nano glaze porcelain umbrella-shaped insulator for the coastal area has the advantages that the included angle between the upper umbrella edge of the first-stage umbrella skirt, the upper umbrella edge of the second-stage umbrella skirt and the upper umbrella edge of the third-stage umbrella skirt and the horizontal plane is 5-8 degrees, the reasonable umbrella inclination angle ensures that rain and snow on the surface of the umbrella disc are not retained, dirt is less accumulated, and the self-cleaning performance is improved.

The self-cleaning type nanometer glaze porcelain umbrella-shaped insulator for the coastal region is characterized in that the first-stage umbrella skirt, the second-stage umbrella skirt and the third-stage umbrella skirt are all of bilateral symmetry type umbrella structures, and the core rod is used as a symmetry axis.

The self-cleaning type nano glaze porcelain umbrella-shaped insulator for the coastal region comprises quartz, ceramic microspheres, calcite, kaolin, calcium metal, zinc oxide, epoxy resin, silicon oxide micro powder, toluene diisocyanate, polyvinylidene fluoride and titanium dioxide.

The self-cleaning nano glaze umbrella-shaped porcelain insulator for the coastal region comprises 40-50 parts of quartz, 20-30 parts of ceramic microspheres, 20-30 parts of calcite, 10-15 parts of kaolin, 11-14 parts of calcium metal, 11-14 parts of zinc oxide, 5-10 parts of epoxy resin, 5-8 parts of silicon oxide micro powder, 5-8 parts of toluene diisocyanate, 5-8 parts of polyvinylidene fluoride and 5-8 parts of titanium dioxide.

The self-cleaning nano glaze umbrella-shaped porcelain insulator for the coastal region comprises 30-45 parts of quartz, 23-27 parts of ceramic microspheres, 25-28 parts of calcite, 14-15 parts of kaolin, 13-14 parts of calcium metal, 12-13 parts of zinc oxide, 7-9 parts of epoxy resin, 5-6 parts of silicon oxide micro powder, 7-8 parts of toluene diisocyanate, 6-8 parts of polyvinylidene fluoride and 5-7 parts of titanium dioxide.

The self-cleaning type nano glaze porcelain umbrella-shaped insulator for the coastal region comprises 38 parts of quartz, 25 parts of ceramic microspheres, 27 parts of calcite, 14 parts of kaolin, 14 parts of calcium metal, 13 parts of zinc oxide, 8 parts of epoxy resin, 5 parts of silicon oxide micro powder, 7 parts of toluene diisocyanate, 8 parts of polyvinylidene fluoride and 7 parts of titanium dioxide.

The self-cleaning type nano glaze umbrella-shaped porcelain insulator for the coastal area is characterized in that the preparation method of the self-cleaning nano glaze comprises the following steps:

(1) respectively grinding solid quartz, ceramic microspheres, calcite, kaolin, calcium metal, zinc oxide, silicon oxide micro powder and titanium dioxide by using a ball mill, wherein the grinding particle size is 300-400 meshes; fully mixing different substances obtained by grinding to obtain mixed powder;

(2) crushing epoxy resin, toluene diisocyanate and polyvinylidene fluoride, adding deionized water, stirring uniformly, and then performing oscillation homogenization in an ultrasonic oscillator to obtain a homogeneous liquid for later use;

(3) adding the mixed powder obtained by grinding in the step (1) into the homogeneous liquid in the step (2), stirring at the temperature of 100-150 ℃, controlling the specific gravity to be 1.40-1.50 and the flow rate to be 110-150s, and uniformly stirring to obtain the self-cleaning nano glaze.

Has the advantages that: compared with the prior art, the invention has the advantages that:

(1) the surface glaze used by the self-cleaning nano glaze umbrella-shaped porcelain insulator for the coastal region is a ceramic glaze which is famous for high hardness, high durability and super water splashing (water resistance). Can be used for a long time in the field environment, and has the characteristics of long-term effective heat resistance, acid and alkali resistance, frosting prevention, icing prevention and the like. Meanwhile, the glaze has antifouling property, so that the glaze can play an irreplaceable role in the aspects of antifouling, mildew proofing, water proofing, snow proofing, icing proofing and the like. Long-term effectual durability adds self-cleaning function, and long service life has removed the later stage from the maintenance to the insulator.

(2) Aiming at the climates such as rainstorm, ice and snow, the self-cleaning type nanometer glazed porcelain umbrella-shaped insulator for coastal areas is characterized in that the umbrella skirt is arranged near the left and right metal accessories and provided with the umbrella skirt with the largest diameter, so that the operation accidents such as electrical bridging and the like caused by heavy rain are thoroughly solved, and the self-cleaning type nanometer glazed porcelain umbrella-shaped insulator has excellent antifouling property. The umbrella spacing and the extension of the first-stage umbrella skirt are increased, the self-bonding performance and the strong rainfall prevention capability of the product are improved, and the reasonable umbrella inclination angle ensures that rain and snow on the surface of the umbrella disk are not retained, dirt is less accumulated, and the self-cleaning performance is improved; the self-cleaning nano glaze used in the invention has the functions of cold resistance and self cleaning.

Drawings

FIG. 1 is a schematic structural view of a self-cleaning nano glazed umbrella-shaped insulator used in coastal areas;

FIG. 2 is a comparison graph of the product effect of the power frequency wet withstand voltage test.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with examples are described in detail below.

Example 1

A self-cleaning type nanometer glaze porcelain umbrella-shaped insulator for coastal areas comprises a core rod 1, a first-stage umbrella skirt 2, a second-stage umbrella skirt 3 and a third-stage umbrella skirt 4, wherein the left end and the right end of the core rod 1 are respectively provided with a metal accessory; the two first-stage umbrella skirts 2 are respectively arranged at the positions close to the left and right metal accessories, the two first-stage umbrella skirts 2 are directly provided with a plurality of second-stage umbrella skirts 3 and third-stage umbrella skirts 4, and the second-stage umbrella skirts 3 and the third-stage umbrella skirts 4 are alternately arranged; the diameter of the first-stage umbrella skirt 2 is 200mm, the diameter of the second-stage umbrella skirt 3 is 150mm, and the diameter of the third-stage umbrella skirt 4 is 130 mm; the core rod is provided with a coating which is made of silicon rubber; the minimum distance between the first-stage umbrella skirt 2 and the second-stage umbrella skirt 3 is 30mm, and the minimum distance between the first-stage umbrella skirt 2 and the third-stage umbrella skirt 4 is 80 mm; the ratio of the umbrella space of the umbrella skirt to the extension length of the umbrella is 0.6; the first umbrella skirt 2, the second umbrella skirt 3 and the third umbrella skirt 4 are symmetrically arranged relative to the core rod 1, the core rod is made of self-cleaning nano glaze, and then the insulator crude product is placed in a 50 ℃ drying oven for drying.

The preparation method of the self-cleaning nano glaze comprises the following steps:

(1) respectively grinding 38 parts of solid quartz, 25 parts of ceramic microspheres, 27 parts of calcite, 14 parts of kaolin, 14 parts of calcium metal, 13 parts of zinc oxide, 5 parts of silicon oxide micropowder and 7 parts of titanium dioxide by using a ball mill, wherein the grinding particle size is 350 meshes; fully mixing different substances obtained by grinding to obtain mixed powder;

(3) and (3) adding the mixed powder obtained by grinding in the step (1) into the homogeneous liquid obtained in the step (2), stirring at the temperature of 150 ℃, controlling the specific gravity to reach 1.50 and the flow rate to reach 130s, and uniformly stirring to obtain the self-cleaning nano glaze.

The umbrella skirt is arranged by arranging a first-stage umbrella skirt close to the left and right metal accessories, the diameter of the first-stage umbrella skirt is larger than that of the second-stage umbrella skirt and that of the third-stage umbrella skirt, so that the operation accidents such as electrical bridging and the like caused by heavy rain are thoroughly solved, and the umbrella skirt has excellent antifouling performance. The distance between the large umbrellas is increased, the large umbrellas extend out, the self-bonding performance and the strong rainfall prevention capability of the product are improved, the reasonable inclination angle of the large and small umbrellas ensures that rain and snow on the surface of the umbrella disk are not retained, the dirt is less accumulated, and the self-cleaning performance is improved.

The power frequency wet withstand voltage test is carried out on the self-cleaning nano glaze umbrella-shaped porcelain insulator (test article) used in the coastal region, and 5 treatment groups are arranged by taking an ordinary glaze porcelain insulator (reference article) taking alumina as a ceramic glaze as a reference article. When the wet withstand pressure test is carried out, artificial rain is sprayed on the test article and the reference article for 15 min. The test results after spraying are shown in table 1, and the comparison graph of the effects of the power frequency wet withstand voltage test products is shown in fig. 2.

As can be seen from Table 1, the withstand voltage values of the test products in the 5 groups of experiments are almost higher than those of the reference products, which indicates that the test effect of the power frequency wet withstand voltage of the test products is good. As can be seen from the graph 1, artificial rain forms small water drops on the surfaces of the test article and the comparison article, but contact angles formed by the water drops and the surfaces of the insulators are quite different, and the contact angle between the water drops on the test article and the surfaces of the test article is obviously larger than the contact angle between the water drops on the comparison article and the surfaces of the comparison article, so that the self-cleaning nano-glazed umbrella-shaped porcelain insulator used in the coastal areas is not easily wetted by outside water, has better self-cleaning performance, and further brings better insulating performance. And the larger the contact angle between the water drop and the surface of the insulator is, the easier the rain drop is to drop and not stay on the surface of the insulator, so that the dirt is not easy to stay in the actual use process, and the insulator has better self-cleaning performance.

The hydrophobicity test of the self-cleaning type nanometer glaze umbrella-shaped porcelain insulator (test article) used in the coastal region is carried out by referring to the standard DL/T810-.

Table 1 example 1 power frequency wet withstand voltage test results

Product classification	1	2	3	4	5
						Test article/KV	174	182	172	176	181
reference/KV	162	165	172	168	164

Example 2

A self-cleaning type nanometer glaze porcelain umbrella-shaped insulator for coastal areas comprises a core rod 1, a first-stage umbrella skirt 2, a second-stage umbrella skirt 3 and a third-stage umbrella skirt 4; the left end and the right end of the core rod 1 are respectively provided with a metal accessory; the two first-stage umbrella skirts 2 are respectively arranged at the positions close to the left and right metal accessories, the two first-stage umbrella skirts 2 are directly provided with a plurality of second-stage umbrella skirts 3 and third-stage umbrella skirts 4, and the second-stage umbrella skirts 3 and the third-stage umbrella skirts 4 are alternately arranged; the diameter of the first-stage shed 2 is 220mm, the diameter of the second-stage shed 3 is 180mm, and the diameter of the third-stage shed 4 is 145 mm; the core rod is made of self-cleaning nano glaze, and the raw materials and the preparation method are the same as those of the embodiment 1; the minimum distance between the first-stage umbrella skirt 2 and the second-stage umbrella skirt 3 is 50mm, and the minimum distance between the first-stage umbrella skirt 2 and the third-stage umbrella skirt 4 is 100 mm; the ratio of the umbrella space of the umbrella skirt to the extension length of the umbrella is 0.8; the first shed 2, the second shed 3 and the third shed 4 are symmetrical umbrella-shaped structures, and the symmetry axis is a core rod 1; the included angle between the umbrella edges of the first umbrella skirt 2, the second umbrella skirt 3 and the third umbrella skirt 4 and the horizontal plane is 5 degrees. The silicon rubber material is fixed on the core rod in a high-temperature spraying mode, and then the insulator crude product is placed in a 50 ℃ oven to be dried to obtain an insulator finished product for the following performance test.

The self-cleaning nano glazed porcelain umbrella-shaped insulator for the coastal area is applied to a power transmission line of the coastal area, the sea area near the Yangtze river basin is selected, the test time is selected to be two months of 7 months and 8 months, the test time is in rainy and thundery weather in the 7-8 month period of the Yangtze river basin, the midday temperature is about 35 ℃ at least for 30 days, the seawater water drops adhered to the surface of the insulator are easier to evaporate due to the high temperature, the salt dirt is easier to firmly fix on the insulator, the badness of the use environment of the insulator is increased, and the performance of the insulator is easier to detect.

The result shows that the insulator has no pollution flashover phenomenon caused by the performance problem of the insulator in the use process of more than two months, the use condition is good, and then the insulator which is blown by wind and rain for two months is taken down and taken back to a laboratory for carrying out hydrophobicity and power frequency wet withstand voltage tests, so that the performance of the insulator after use is detected. The test method of the power frequency wet withstand voltage test is the same as that of example 1, the test result of the reference substance is the experiment result in example 1, and the test result is shown in table 2. As can be seen from Table 2, the power frequency wet withstand voltage test results of the used insulator are all larger than 150KV, and the insulator can still be normally put into use, so that the service life of the insulator is prolonged, the cost is saved, and the occurrence of accidents is reduced. The hydrophobicity test method is the same as that in example 1, and the test result shows that the hydrophobicity of the used insulator can reach HC2 level.

Table 2 example 2 power frequency wet withstand voltage test results

Product classification	1	2	3	4	5
						Test article/KV	170	178	169	171	175
reference/KV	162	165	172	168	164

Claims

1. A self-cleaning type nano glaze porcelain umbrella-shaped insulator for coastal areas is characterized by comprising a core rod (1), first-stage umbrella skirts (2), second-stage umbrella skirts (3) and third-stage umbrella skirts (4), wherein metal accessories are arranged at the left end and the right end of the core rod (1), two first-stage umbrella skirts (2) are respectively arranged at positions close to the left metal accessories and the right metal accessories, a plurality of second-stage umbrella skirts (3) and third-stage umbrella skirts (4) are arranged between the two first-stage umbrella skirts (2), and the second-stage umbrella skirts (3) and the third-stage umbrella skirts (4) are alternately arranged; the diameter of the first-stage umbrella skirt (2) is 200-220mm, the diameter of the second-stage umbrella skirt (3) is 150-180mm, and the diameter of the third-stage umbrella skirt (4) is 130-145 mm; the minimum distance between the first-stage umbrella skirt (2) and the second-stage umbrella skirt (3) is 30-50mm, and the minimum distance between the first-stage umbrella skirt (2) and the third-stage umbrella skirt (4) is 80-100 mm; the surface of the core rod (1) is made of self-cleaning nano glaze; the self-cleaning nano glaze comprises 40-50 parts of quartz, 20-30 parts of ceramic microspheres, 20-30 parts of calcite, 10-15 parts of kaolin, 11-14 parts of calcium metal, 11-14 parts of zinc oxide, 5-10 parts of epoxy resin, 5-8 parts of silicon oxide micro powder, 5-8 parts of toluene diisocyanate, 5-8 parts of polyvinylidene fluoride and 5-8 parts of titanium dioxide.

2. The self-cleaning nano-glazed umbrella-shaped porcelain insulator for the coastal areas as claimed in claim 1, wherein the ratio of the umbrella spacing of the umbrella skirt to the extension length of the umbrella is 0.6-0.8.

3. The self-cleaning nano-glazed umbrella-shaped porcelain insulator for the coastal areas according to claim 1, wherein the included angle between the upper umbrella edge of the first-stage umbrella skirt (2), the upper umbrella edge of the second-stage umbrella skirt (3) and the upper umbrella edge of the third-stage umbrella skirt (4) and the horizontal plane is 5-8 degrees.

4. The self-cleaning nano-glazed umbrella-shaped porcelain insulator for the coastal areas according to claim 1, wherein the first-stage umbrella skirt (2), the second-stage umbrella skirt (3) and the third-stage umbrella skirt (4) are all of bilaterally symmetrical umbrella structures, and the core rod (1) is taken as a symmetry axis.

5. The self-cleaning nano-glazed umbrella-shaped porcelain insulator for the coastal areas according to claim 1, wherein the self-cleaning nano-glaze comprises 30-45 parts of quartz, 23-27 parts of ceramic microspheres, 25-28 parts of calcite, 14-15 parts of kaolin, 13-14 parts of calcium metal, 12-13 parts of zinc oxide, 7-9 parts of epoxy resin, 5-6 parts of silicon oxide micro powder, 7-8 parts of toluene diisocyanate, 6-8 parts of polyvinylidene fluoride and 5-7 parts of titanium dioxide.

6. The self-cleaning nano-glazed umbrella-type porcelain insulator for the coastal areas according to claim 1, wherein the self-cleaning nano-glaze comprises 38 parts of quartz, 25 parts of ceramic microspheres, 27 parts of calcite, 14 parts of kaolin, 14 parts of calcium metal, 13 parts of zinc oxide, 8 parts of epoxy resin, 5 parts of silicon oxide micropowder, 7 parts of toluene diisocyanate, 8 parts of polyvinylidene fluoride and 7 parts of titanium dioxide.

7. The self-cleaning type nano glazed umbrella insulator for the coastal areas according to claim 5 or 6, wherein the preparation method of the self-cleaning nano glaze comprises the following steps: