CN101494107B - Method for producing sandstorm resistance insulator core pin with umbrella for railway - Google Patents
Method for producing sandstorm resistance insulator core pin with umbrella for railway Download PDFInfo
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- CN101494107B CN101494107B CN2009100214673A CN200910021467A CN101494107B CN 101494107 B CN101494107 B CN 101494107B CN 2009100214673 A CN2009100214673 A CN 2009100214673A CN 200910021467 A CN200910021467 A CN 200910021467A CN 101494107 B CN101494107 B CN 101494107B
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Abstract
The invention discloses a manufacturing method of a railway-used wind sand-resistant umbrella-shaped core rod with insulators; the method comprises the following steps of: step 1, processing the core rod body. Firstly, the whole core rod is processed and manufactured, and then, the core rod with the whole length is cut into multiple core rod bodies according to the length of the insulator needing to be processed; step 2, the umbrella skirt of the core rod is processed at the outside of the core rod body through the following steps: the outer surface of the core rod body is grinded in a conventional manner, washed with a cleaning liquid, put in an oven for prebaking and evenly and externally coated with a layer of coupling agent; the core rod body coated with the coupling agent is put in the middle of a pressure casting die; then, mixed materials which consist of epoxy resin compound glue liquid and glass fiber are filled into pressure casting die and put in a pressure casting and molding device for pressure casting and molding. The manufacturing method has simple processing technique and convenient operation; the umbrella-shaped core rod processed with the manufacturing method has high safety and long service life and can effectively solve the problem of electrical default caused after the insulating sheaths of compound insulators are broken.
Description
Technical field
The present invention relates to a kind of production method that is applicable to employed High-Voltage Electrical Appliances usefulness composite electric insulator core bar in electric railway industry and the power industry, especially relate to a kind of production method of sandstorm resistance insulator core pin with umbrella for railway.
Background technology
At present, in electric railway industry and power industry, the use of the used composite insulator of High-Voltage Electrical Appliances is very extensive.Common employed composite insulator is that full skirt is formed by plug and the insulating sleeve that is sleeved on the plug outside all; in the actual use; the full skirt that is sleeved on the plug outside often is worn because of a variety of causes and finally loses protective effect; especially concerning railway is used composite insulator; this kind situation is of common occurrence; under particularly lower and the situation that the location dust storm is bigger in the insulator installation site; because of grit, stone etc. impacts on the composite insulator silicon rubber is that insulating sleeve is torn the apparatus failure problem that the back is caused, and comparatively sees more.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of production method of sandstorm resistance insulator core pin with umbrella for railway is provided, its processing technology is simple and easy and simple to handle, good and the long service life of band umbellate form plug security performance of being produced can effectively solve because of the composite insulator insulating sleeve and tear the apparatus failure problem that caused of back.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of production method of sandstorm resistance insulator core pin with umbrella for railway, its band umbellate form plug is made up of plug barred body and the full skirt that is sleeved on the plug barred body outside, it is characterized in that this method may further comprise the steps:
Step 1, processing plug barred body, its course of processing may further comprise the steps:
(a) the employing hauling machine will be through the glass fiber bundle of preforming mould pre-molding with the speed of 7-10cm/min, level is passed from injecting glue extruding equipment and curing molding mould successively, make that the glass fiber bundle of described pre-molding is first after described injecting glue extruding equipment carries out even injecting glue of continuous high pressure vacuum and pultrusion, through the moulding of described curing molding mold cured, make whole section plug again;
Described injecting glue extruding equipment comprise that inside is provided with the high-pressure injection plastic device of vacuum seal glue injection cavities and in described glue injection cavities the even injector of injection ring epoxy resins composite glue solution, described glue injection cavities internal pressure is 25-34MPa; The curing temperature of described curing molding mould is 120-180 ℃; Described epoxy resin composite glue solution is formulated by weight 100: 70～90: 1～2 mixed by epoxy resin, curing agent and promoter, and described epoxy resin is 127 types or 128 type epoxy resin, and described curing agent is an imidazole curing agent;
(b) according to the length of required processing insulator, described whole section plug cut into a plurality of plug barred bodies;
Step 2, at plug barred body outside processing full skirt, its course of processing may further comprise the steps:
(h) outer surface with described plug barred body carries out the routine polishing and with after the cleaning fluid cleaning, puts into baking oven preliminary drying 2-3h, and described oven temperature is 60-80 ℃;
(i) through the outside evenly brushing one deck coupling agent of pre-baked plug barred body, described coupling agent is the epoxy resin composite glue solution described in the step (a);
(j) the plug barred body that will scribble coupling agent is put into casting pressing mold tool middle part, mixing of epoxy resin composite glue solution and glass fibre composition is rolled into a ball in the hole of expecting evenly to insert between described casting pressing mold tool and the plug barred body again; The structure of described casting pressing mold tool is corresponding with the external structure that needs the moulding full skirt; The weight ratio of epoxy resin composite glue solution and glass fibre was 30～35: 70～65 during described mixing was rolled into a ball and expected, described epoxy resin composite glue solution is the epoxy resin composite glue solution described in the step (a);
(k) die casting moulding: described casting pressing mold tool is put into die casting moulding equipment cast pressure, in the die casting moulding process, casting pressure is 150～200 tons, and it is 150-180 ℃ that temperature is pressed in casting, and the die casting moulding time is 1-2h.
Cleaning fluid described in the step (h) is acetone or alcohol.
The thickness of coupling agent is 0.5mm～1.0mm described in the step (i).
The present invention compared with prior art has the following advantages, and 1, modern design, processing technology is simple and easy and simple to handle.2, the band umbellate form mandrel-retracting machine electrical property of being produced is good, fiber content is high, and properties of product are stable and consistent, and in addition, properties of product are difficult for being affected by the external environment.Good and the long service life of band umbellate form plug security performance of 3, being produced can effectively solve because of the composite insulator insulating sleeve and tear the apparatus failure problem that caused of back.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 produces the structural representation of band umbellate form plug for the present invention.
Fig. 2 is a process chart of the present invention.
Description of reference numerals:
1-plug barred body; The 2-full skirt.
Embodiment
Embodiment 1
As shown in Figure 1 and Figure 2, sandstorm resistance insulator core pin with umbrella for railway of the present invention is made up of plug barred body 1 and the full skirt 2 that is sleeved on plug barred body 1 outside, and the production method of its sandstorm resistance insulator core pin with umbrella for railway may further comprise the steps:
Step 1, processing plug barred body 1, its course of processing may further comprise the steps:
(a) the employing hauling machine will be through the glass fiber bundle of preforming mould pre-molding with the speed of 7-10cm/min, level is passed from injecting glue extruding equipment and curing molding mould successively, make that the glass fiber bundle of described pre-molding is first after described injecting glue extruding equipment carries out even injecting glue of continuous high pressure vacuum and pultrusion, through the moulding of described curing molding mold cured, make whole section plug again.
Described injecting glue extruding equipment comprise that inside is provided with the high-pressure injection plastic device of vacuum seal glue injection cavities and in described glue injection cavities the even injector of injection ring epoxy resins composite glue solution, described glue injection cavities internal pressure is 25-34MPa; The curing temperature of described curing molding mould is 120-180 ℃; Described epoxy resin composite glue solution is formulated by weight 100: 70～90: 1～2 mixed by epoxy resin, curing agent and promoter, and described epoxy resin is 127 types or 128 type epoxy resin, and described curing agent is an imidazole curing agent.
In the present embodiment, the speed of described hauling machine is 7cm/min, and described glue injection cavities internal pressure is 25MPa; The curing temperature of described curing molding mould is 120 ℃; Described epoxy resin composite glue solution is formulated by weight 100: 70: 1 mixed by epoxy resin, curing agent and promoter.
(b) according to the length of required processing insulator, described whole section plug cut into a plurality of plug barred bodies 1.
Step 2, at plug barred body 1 outside processing full skirt 2, its course of processing may further comprise the steps:
(h) outer surface with described plug barred body 1 carries out the routine polishing and with after the cleaning fluid cleaning, puts into baking oven preliminary drying 2-3h, and described oven temperature is 60-80 ℃.In the present embodiment, oven temperature is 60 ℃, and the time of putting into the baking oven preliminary drying is 3h.Described cleaning fluid is acetone or alcohol.
(i) through pre-baked plug barred body 1 outside evenly brushing one deck coupling agent, described coupling agent is the epoxy resin composite glue solution described in the step (a).The thickness of described coupling agent is 0.5mm～1.0mm.In the present embodiment, the thickness of described coupling agent is 0.5mm.
(j) the plug barred body 1 that will scribble coupling agent is put into casting pressing mold tool middle part, mixing of epoxy resin composite glue solution and glass fibre composition is rolled into a ball in the hole of expecting evenly to insert between described casting pressing mold tool and the plug barred body (1) again; The structure of described casting pressing mold tool is corresponding with the external structure that needs moulding full skirt 2; The weight ratio of epoxy resin composite glue solution and glass fibre was 30～35: 70～65 during described mixing was rolled into a ball and expected, described epoxy resin composite glue solution is the epoxy resin composite glue solution described in the step (a).
In the present embodiment, the weight ratio of epoxy resin composite glue solution and glass fibre was 30: 70 during described mixing was rolled into a ball and expected.
(k) die casting moulding: described casting pressing mold tool is put into die casting moulding equipment cast pressure, in the die casting moulding process, casting pressure is 150～200 tons, and it is 150-180 ℃ that temperature is pressed in casting, and the die casting moulding time is 1-2h.In the present embodiment, casting pressure is 150 tons, and it is 150 ℃ that temperature is pressed in casting, and the die casting moulding time is 2h.
Embodiment 2
In the present embodiment, during processing plug barred body 1, the speed of described hauling machine is 9cm/min, and described glue injection cavities internal pressure is 34MPa; The curing temperature of described curing molding mould is 180 ℃; Described epoxy resin composite glue solution is formulated by weight 100: 90: 2 mixed by epoxy resin, curing agent and promoter.After plug barred body 1 machines, the outer surface of described plug barred body 1 carried out the routine polishing and clean with cleaning fluid after put into the baking oven preliminary drying, oven temperature is 80 ℃, the time of putting into the baking oven preliminary drying is 2h.Behind preliminary drying, be the 1.0mm coupling agent at plug barred body 1 outside evenly brushing one layer thickness.
When making full skirt 2, the weight ratio of epoxy resin composite glue solution and glass fibre was 35: 65 during described mixing was rolled into a ball and expected.In the die casting moulding process, casting pressure is 200 tons, and it is 180 ℃ that temperature is pressed in casting, and the die casting moulding time is 1h.
The process equipment of remainder and processing technology are all identical with embodiment 1.
Embodiment 3
In the present embodiment, during processing plug barred body 1, the speed of described hauling machine is 8cm/min, and described glue injection cavities internal pressure is 30MPa; The curing temperature of described curing molding mould is 150 ℃; Described epoxy resin composite glue solution is formulated by weight 100: 80: 1.5 mixed by epoxy resin, curing agent and promoter.After plug barred body 1 machines, the outer surface of described plug barred body 1 carried out the routine polishing and clean with cleaning fluid after put into the baking oven preliminary drying, oven temperature is 70 ℃, the time of putting into the baking oven preliminary drying is 2.5h.Behind preliminary drying, be the 0.8mm coupling agent at plug barred body 1 outside evenly brushing one layer thickness.
When making full skirt 2, the weight ratio of epoxy resin composite glue solution and glass fibre was 32: 68 during described mixing was rolled into a ball and expected.In the die casting moulding process, casting pressure is 180 tons, and it is 165 ℃ that temperature is pressed in casting, and the die casting moulding time is 1.5h.
The process equipment of remainder and processing technology are all identical with embodiment 1.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection range of technical solution of the present invention according to the technology of the present invention essence.
Claims (3)
1. the production method of a sandstorm resistance insulator core pin with umbrella for railway, its band umbellate form plug is made up of plug barred body (1) and the full skirt (2) that is sleeved on plug barred body (1) outside, it is characterized in that this method may further comprise the steps:
Step 1, processing plug barred body (1), its course of processing may further comprise the steps:
(a) the employing hauling machine will be through the glass fiber bundle of preforming mould pre-molding with the speed of 7-10cm/min, level is passed from injecting glue extruding equipment and curing molding mould successively, make that the glass fiber bundle of described pre-molding is first after described injecting glue extruding equipment carries out even injecting glue of continuous high pressure vacuum and pultrusion, through the moulding of described curing molding mold cured, make whole section plug again;
Described injecting glue extruding equipment comprise that inside is provided with the high-pressure injection plastic device of vacuum seal glue injection cavities and in described glue injection cavities the even injector of injection ring epoxy resins composite glue solution, described glue injection cavities internal pressure is 25-34MPa; The curing temperature of described curing molding mould is 120-180 ℃; Described epoxy resin composite glue solution is formulated by weight 100: 70～90: 1～2 mixed by epoxy resin, curing agent and promoter, and described epoxy resin is 127 types or 128 type epoxy resin, and described curing agent is an imidazole curing agent;
(b) according to the length of required processing insulator, described whole section plug cut into a plurality of plug barred bodies (1);
Step 2, at plug barred body (1) outside processing full skirt (2), its course of processing may further comprise the steps:
(h) outer surface with described plug barred body (1) carries out the routine polishing and with after the cleaning fluid cleaning, puts into baking oven preliminary drying 2-3h, and described oven temperature is 60-80 ℃;
(i) through the outside evenly brushing one deck coupling agent of pre-baked plug barred body (1), described coupling agent is the epoxy resin composite glue solution described in the step (a);
(j) the plug barred body (1) that will scribble coupling agent is put into casting pressing mold tool middle part, mixing of epoxy resin composite glue solution and glass fibre composition is rolled into a ball in the hole of expecting evenly to insert between described casting pressing mold tool and the plug barred body (1) again; The structure of described casting pressing mold tool is corresponding with the external structure that needs moulding full skirt (2); The weight ratio of epoxy resin composite glue solution and glass fibre was 30～35: 70～65 during described mixing was rolled into a ball and expected, described epoxy resin composite glue solution is the epoxy resin composite glue solution described in the step (a);
(k) die casting moulding: described casting pressing mold tool is put into die casting moulding equipment cast pressure, in the die casting moulding process, casting pressure is 150～200 tons, and it is 150-180 ℃ that temperature is pressed in casting, and the die casting moulding time is 1-2h.
2. according to the production method of the described sandstorm resistance insulator core pin with umbrella for railway of claim 1, it is characterized in that: the cleaning fluid described in the step (h) is acetone or alcohol.
3. according to the production method of claim 1 or 2 described sandstorm resistance insulator core pin with umbrella for railway, it is characterized in that: the thickness of coupling agent is 0.5mm～1.0mm described in the step (i).
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| CN2009100214673A CN101494107B (en) | 2009-03-10 | 2009-03-10 | Method for producing sandstorm resistance insulator core pin with umbrella for railway |
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| CN2009100214673A CN101494107B (en) | 2009-03-10 | 2009-03-10 | Method for producing sandstorm resistance insulator core pin with umbrella for railway |
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| CN101494107B true CN101494107B (en) | 2010-08-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102592760A (en) * | 2012-04-10 | 2012-07-18 | 西安高强绝缘电气有限责任公司 | Method for manufacturing large-diameter post insulator core body |
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| CN101740186B (en) * | 2010-01-29 | 2011-11-23 | 陕西泰普瑞电工绝缘技术有限公司 | Method for preparing double-stage formed high-voltage compound insulator solid core rod |
| CN102568715B (en) * | 2010-12-30 | 2014-06-04 | 国家电网公司 | Insulator umbrella skirt, insulators comprising umbrella skirt as well as manufacturing methods for insulator umbrella skirt and insulators |
| CN103177828A (en) * | 2011-12-24 | 2013-06-26 | 广州聚成电工绝缘材料有限公司 | Insulation mandrel and production method thereof |
| CN105655068B (en) * | 2016-01-28 | 2017-06-30 | 徐传本 | A kind of manufacture method of composite insulator |
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| CN114783699A (en) * | 2022-04-29 | 2022-07-22 | 瑞泰电气有限公司 | Core rod for composite insulator and manufacturing method thereof |
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