CN104290335A - Production process of insulation pull rod - Google Patents
Production process of insulation pull rod Download PDFInfo
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- CN104290335A CN104290335A CN201410517558.7A CN201410517558A CN104290335A CN 104290335 A CN104290335 A CN 104290335A CN 201410517558 A CN201410517558 A CN 201410517558A CN 104290335 A CN104290335 A CN 104290335A
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- insulated tension
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Abstract
The invention discloses a production process of an insulation pull rod. The production process comprises an insulation pipe blank pipe curing and molding phase, an insulation pipe blank pipe machining phase and a connector bonding phase, wherein in the insulation pipe blank pipe curing and molding phase, fiber materials are dried in vacuum; resin is impregnated under a vacuum environment and the fiber materials are subjected to primary curing; after de-molding, the fiber materials are subjected to secondary curing to obtain an insulation pipe blank pipe; the insulation pipe blank pipe is machined; the insulation pipe blank pipe is bonded with a connector by adopting a heat-expansion and cold-contraction principle; and finally, the insulation pull rod is obtained. According to the production process of the insulation pull rod, the technical defects of a production process of the insulation pull rod that air gaps, micro-cracks, concentrated stress and layering are easy to generate, the connection of the connector is not reliable, the air gaps are easy to generate in a bonding layer of the connector and the insulation pipe and the like are overcome.
Description
Technical field
The present invention relates to a kind of production technology of insulated tension pole, refer in particular to a kind of production technology of fibre reinforced composites insulated tension pole.
Background technology
Insulated tension pole, as the vitals of divide-shut brake in high-tension switch gear, requires good insulating properties, very high mechanical performance and the gas attack of resistance to SF6 performance, and need possess lightweight feature simultaneously.What insulated tension pole used for high-voltage switch extensively adopted is intermediate insulation part poured with epoxy resin, and the production technology of two ends cast joint, it is poor that the insulated tension pole of this kind of explained hereafter exists mechanical performance, the shortcoming that weight is large.
In order to improve these shortcomings, current modal method is the intermediate insulation part adopting vacuum pressure varnished insulation pipe to substitute insulated tension pole, and having the pull bar insulation tube two ends compared with high-mechanical property requirement by screw thread or bonding way connection metal joint as required, but this manufacturing technique method also also exists a lot of hidden danger, be mainly reflected in the quality of vacuum pressure varnished insulation pipe and connection reliability two aspects of two end connectors.
Vacuum pressure varnished insulation pipe is fibrous material and resin curing molding and the hollow insulation tube obtained under vacuum.Insulation tube easily produces air gap in process of production, micro-crack, and stress is concentrated, the mass defects such as layering, thus the mechanical performance and the electric property that greatly reduce insulated tension pole.In addition, the bonding process of two ends metal joint and insulation tube easily causes bond properties unreliable, unstable, and binder course easily produces the defects such as air gap, thus directly affects the mechanical performance of insulated tension pole, electric property and operating reliability.
Summary of the invention
The present invention will provide a kind of high electrical property and mechanical performance, the production technology of the insulated tension pole that operating reliability is high, thus solving that insulated tension pole easily produces air gap in process of production, micro-crack, stress are concentrated, layering, joint connects unreliable, joint and insulation tube binder course easily produces the technological deficiencies such as air gap.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of production technology of insulated tension pole, is characterized in that, comprises the following steps:
Step 1: cleaning is preheating core rod also, and is wound around fibrous material on core rod, then the core rod being tied with fibrous material is placed in die cavity;
Step 2: carry out high-temperature vacuum drying to the fibrous material in die cavity, removes the residual air of fibrous material and moisture;
Step 3: according to proportioning epoxy resin, curing agent and promoter is mixed to get resin under impregnation technology temperature conditions and vacuum outgas is for subsequent use;
Step 4: resin step 3 obtained injects die cavity from die cavity lower end feeding mouth, fills rear closedown die cavity upper end discharging opening, under dwell pressure, at least pressurize 1 hour, makes resin impregnated fibrous material;
Step 5: under dwell pressure, carries out circulating-heating to core rod, and simultaneously from feeding mouth resin by injection, carries out one-step solidification from top to bottom, from the inside to the outside;
Step 6: lowered the temperature by mould, slough die cavity and core rod, obtains insulation pipe pipe;
Step 7: insulation pipe pipe is put into baking oven and carries out regelate;
Step 8: the outer surface of insulation pipe pipe and bonding location are processed, then insulation pipe pipe and joint are carried out technique for sticking, bonding complete after obtain insulated tension pole.
Preferably, to be that one or more in aramid fiber, polyster fibre and alkali-free glass fibre are mixed knit or purely wovenly to form described fibrous material.
Preferably, the epoxy resin in described resin, curing agent and promoter adopt 100:98:3 proportioning.
Preferably, described in step 2 to fibrous material carry out high-temperature vacuum drying process high temperature adopt 100 DEG C, vacuum 0-5mbar.
Preferably, the impregnation technology temperature described in step 3 is at 40-60 DEG C.
Preferably, step 4 and the dwell pressure described in step 5 are 5bar.
Further, in step 8, processing and bonding is carried out to insulation pipe pipe, comprises the following steps:
Step a: machined is carried out to the outer wall of insulation pipe pipe and bonding location, bonding location head is processed into inclined-plane, bonding plane is processed with multiple groove in glue, and the large grade of the diameter tolerance of the diameter tolerance of bonding plane and joint, make joint and insulation pipe pipe form interference fit;
Step b: joint cleans and carries out the processing of increase surface roughness and slot machining in glue;
Step c: clean the insulation pipe pipe processed according to step a, then puts into baking oven heating 10-20 minute, makes insulation pipe tube swelling;
Steps d: by adhesive coated at the bonding location of pipe pipe and joint that insulate, be evenly full of binding agent in groove in glue;
Step e: be positioned on assembly machine by the joint having applied binding agent, aligns joint with insulation pipe pipe, and assembly machine is by joint press-in insulation pipe pipe;
Step f: bonding insulated tension pole is put into baking oven and solidification in 16 hours is carried out to binding agent.
Preferably, described binding agent is that 100 parts of epoxy resin and 35 parts of curing agent are uniformly mixed to form.
Preferably, the oven temperature described in step c is 120 DEG C, and the oven temperature described in step f is 60 DEG C.
Adopt the beneficial effect of technical scheme of the present invention:
1, fiber vacuumized and carry out high-temperature heating simultaneously, fully removing the gas comprised in fibre gap and moisture;
2, utilize that resin viscosity is low, the feature of good penetrability, low temperature at the uniform velocity material feeding is carried out from die cavity lower end feeding mouth at vacuum condition, after resin material fills die cavity, close discharging opening and keep at least 1 hour with the dwell pressure of 5bar, fibrous material is fully soaked into;
3, the feature that core rod Inner eycle oil heating-up temperature is even, temperature-controllable precision is high is utilized, from the oil-feed of core rod upper end, lower end is fuel-displaced, make insulation tube piece base pipe according to from inside to outside, solidification from top to bottom order be cured, be beneficial to epoxy resin constringency cleft in the curing process obtain sufficient resin supplement, insulation tube is produced air gap, micro-crack, stress are concentrated, the probability of layering drops to minimum;
4, after the demoulding, regelate is carried out to insulation pipe pipe, fully eliminate the internal stress of insulation tube;
5, the principle utilizing object to expand with heat and contract with cold, heats insulation tube, makes it expand, and is convenient to joint and loads, and when after insulation tube cooling, insulation tube shrinks, and the magnitude of interference of insulation tube and joint is increased;
6, process some grooves in glue at the link position of insulation tube and joint, and ensure that the slot in glue of insulation tube and joint is put and mutually stagger, to make adhesive strength be further enhanced, further ensure that the operating reliability of insulated tension pole.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is the structure chart of vacuum pressure varnished insulation pipe pipe curing molding in the present invention;
Fig. 2 is insulate in the present invention pipe pipe and joint bonded structure figure;
Fig. 3 is the A portion enlarged drawing of Fig. 2 in the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
The pipe of vacuum pressure varnished insulation shown in Fig. 1 pipe curing molding mould comprises temperature sense control device 1, circulating line device 2, die cavity 3, core rod 4, vavuum pump 5, mixing device 6 and air compressor 7, temperature sense control device 1 connects circulating line device 2, heating agent is full of in circulating line device 2, and form closed circuit by flowline and oil return pipe and core rod 4, die cavity 3 upper end connects vavuum pump 5, lower end connects mixing device 6, and simultaneously mixing device 6 and vavuum pump 5 are connected with air compressor 7 and form the pipe pipe production mould that insulate.
Insulation pipe pipe and joint bonded structure shown in Fig. 2, Fig. 3, the two ends bonded joint 9 of insulation pipe pipe 8, insulation pipe pipe 8 bonding location head is processed into inclined-plane 81, bonding plane is processed with the insulation pipe pipe groove in glue 82 according to certain intervals arrangement, the diameter tolerance of bonding location differs one-level with joint 9 diameter tolerance, form interference fit, the bonding plane of joint 9 is also processed with the joint groove in glue 91 according to certain intervals arrangement.
The specific embodiment of composition graphs 1 to Fig. 3 to insulated tension pole production technology comprises the following steps:
Step 1: cleaning mould, core rod 4 evenly to coat after releasing agent at 60 DEG C of temperature preheating 1 hour, is wrapped in by fibrous material on core rod 4, is then positioned in die cavity 3 by core rod 4 after preheating is complete;
Step 2: die cavity 3 lower end is closed, upper end and vavuum pump 5 contact, to fibrous material under temperature 100 DEG C, the vacuum high-temperature condition of pressure at 0-5mbar dry 4 hours, the gas comprised in abundant removal fibrous material gap and moisture, reduce insulation pipe pipe to greatest extent and produce air gap and electrically bad risk, after fibrous material dries, mold temperature is down to 40-60 DEG C;
Step 3: mix in mixing device 6 according to the proportioning of 100 parts of epoxy resin, 98 parts of curing agent, 3 parts of promoter, then 40-60 DEG C, pressure is degassed for subsequent use under the vacuum condition being less than 1.5mbar;
Step 4: resin is injected die cavity 3 from die cavity 3 lower end feeding mouth even speed, after resin fills die cavity 3, close the discharging opening of die cavity 3 upper end, regulate air compressor 7, pressure is made to remain under 5bar condition at least pressurize 1 hour, ensure fibrous material dipping fully, prevent bubble and layering from producing;
Step 5: air compressor 7 keeps compressed air air pressure under 5bar condition, circulating line device 2 heats heating agent and enters core rod 4 to entering after 100-120 DEG C from upper end, through core rod 4, reflux from the lower end of core rod 4 again, heating agent is carried out from inside to outside core rod 4, from top to bottom uniform circulation heating, resin simultaneously in mixing device 6 injects loading mould cavity 3 from the feeding mouth of die cavity 3 and carries out pressurize, forms one-step solidification, from the inside to the outside from top to bottom simultaneously;
Step 6: after one-step solidification terminates, places the ingot stripper demoulding by after mould cooling, obtains insulation pipe pipe;
Step 7: insulation pipe pipe is put into baking oven, carries out regelate at the temperature of 120 DEG C;
Step 8: machined is carried out to the outer wall of insulation pipe pipe 8 and bonding location, bonding location head is processed into inclined-plane 81, bonding plane is processed with multiple insulation pipe pipes groove in glue 82, and the large grade of the diameter tolerance of the diameter tolerance of bonding plane and joint, makes joint 9 and insulation pipe pipe 8 form interference fit;
Step 9: joint 9 clean and carry out increase surface roughness processing and joint groove in glue 91 process;
Step 10: clean the insulation pipe pipe 8 processed according to step 8, then put into baking oven and heat 10-20 minute at 120 DEG C of temperature, make insulation pipe tube swelling;
Step 11: by adhesive coated at the bonding location of pipe pipe 8 and joint 9 that insulate, be evenly full of binding agent in edge pipe pipe groove in glue 82 and joint groove in glue 91;
Step 12: the joint 9 having applied binding agent is positioned on assembly machine, utilize the inclined-plane 81 of insulation pipe pipe 8 head to be alignd with insulation pipe pipe 8 by joint 9, joint 9 is pressed into insulation pipe pipe 8 by assembly machine;
Step 13: bonding insulated tension pole is put into baking oven, at 60 DEG C of temperature, carry out solidification in 16 hours to binding agent, insulated tension pole completes.
In above-mentioned technique, to be that one or more in aramid fiber, polyster fibre and alkali-free glass fibre are mixed knit or purely wovenly to form fibrous material, and binding agent is that 100 parts of epoxy resin and 35 parts of curing agent are uniformly mixed to form.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.
Claims (9)
1. a production technology for insulated tension pole, is characterized in that, comprises the following steps:
Step 1: cleaning is preheating core rod also, and is wound around fibrous material on core rod, then the core rod being tied with fibrous material is placed in die cavity;
Step 2: carry out high-temperature vacuum drying to the fibrous material in die cavity, removes the residual air of fibrous material and moisture;
Step 3: according to proportioning epoxy resin, curing agent and promoter is mixed to get resin under impregnation technology temperature conditions and vacuum outgas is for subsequent use;
Step 4: resin step 3 obtained injects die cavity from die cavity lower end feeding mouth, fills rear closedown die cavity upper end discharging opening, under dwell pressure, at least pressurize 1 hour, makes resin impregnated fibrous material;
Step 5: under dwell pressure, carries out circulating-heating to core rod, and simultaneously from feeding mouth resin by injection, carries out one-step solidification from top to bottom, from the inside to the outside;
Step 6: lowered the temperature by mould, slough die cavity and core rod, obtains insulation pipe pipe;
Step 7: insulation pipe pipe is put into baking oven and carries out regelate;
Step 8: the outer surface of insulation pipe pipe and bonding location are processed, then insulation pipe pipe and joint are carried out technique for sticking, bonding complete after obtain insulated tension pole.
2. the production technology of a kind of insulated tension pole according to claim 1, is characterized in that: carry out processing and bonding to insulation pipe pipe in step 8, comprise the following steps:
Step a: machined is carried out to the outer wall of insulation pipe pipe and bonding location, bonding location head is processed into inclined-plane, bonding plane is processed with multiple groove in glue, and the large grade of the diameter tolerance of the diameter tolerance of bonding plane and joint, make joint and insulation pipe pipe form interference fit;
Step b: joint cleans and carries out the processing of increase surface roughness and slot machining in glue;
Step c: clean the insulation pipe pipe processed according to step a, then puts into baking oven heating 10-20 minute, makes insulation pipe tube swelling;
Steps d: by adhesive coated at the bonding location of pipe pipe and joint that insulate, be evenly full of binding agent in groove in glue;
Step e: be positioned on assembly machine by the joint having applied binding agent, aligns joint with insulation pipe pipe, and assembly machine is by joint press-in insulation pipe pipe;
Step f: bonding insulated tension pole is put into baking oven and solidification in 16 hours is carried out to binding agent.
3. the production technology of a kind of insulated tension pole according to claim 2, is characterized in that: described binding agent is that 100 parts of epoxy resin and 35 parts of curing agent are uniformly mixed to form.
4. the production technology of a kind of insulated tension pole according to claim 2, is characterized in that: the oven temperature described in step c is 120 DEG C, the oven temperature described in step f is 60 DEG C.
5. the production technology of a kind of insulated tension pole according to claim 1, is characterized in that: to be that one or more in aramid fiber, polyster fibre and alkali-free glass fibre are mixed knit or purely wovenly to form described fibrous material.
6. the production technology of a kind of insulated tension pole according to claim 1, is characterized in that: the epoxy resin in described resin, curing agent and promoter adopt 100:98:3 proportioning.
7. the production technology of a kind of insulated tension pole according to claim 1, is characterized in that: described in step 2 to fibrous material carry out high-temperature vacuum drying process adopt temperature be 100 DEG C, vacuum 0-5mbar.
8. the production technology of a kind of insulated tension pole according to claim 1, is characterized in that: the impregnation technology temperature described in step 3 is at 40-60 DEG C.
9. the production technology of a kind of insulated tension pole according to claim 1, is characterized in that: step 4 and the dwell pressure described in step 5 are 5bar.
Priority Applications (1)
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| CN201410517558.7A CN104290335A (en) | 2014-09-30 | 2014-09-30 | Production process of insulation pull rod |
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| CN201410517558.7A CN104290335A (en) | 2014-09-30 | 2014-09-30 | Production process of insulation pull rod |
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| CN104290335A true CN104290335A (en) | 2015-01-21 |
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| CN201410517558.7A Pending CN104290335A (en) | 2014-09-30 | 2014-09-30 | Production process of insulation pull rod |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261497A (en) * | 2015-08-25 | 2016-01-20 | 国网智能电网研究院 | High voltage level insulation pull rod prefabticated part and preparation process therefor |
| CN105328920A (en) * | 2015-12-07 | 2016-02-17 | 江苏神马电力股份有限公司 | Dipping molding device and method for insulating pull rods |
| CN106182800A (en) * | 2016-06-28 | 2016-12-07 | 上海腾炎新材料有限公司 | A kind of SF6 primary cut-out insulated tension pole production technology |
| CN106229170A (en) * | 2016-07-29 | 2016-12-14 | 全球能源互联网研究院 | A kind of insulated tension pole and preparation method thereof |
| CN106548888A (en) * | 2015-09-16 | 2017-03-29 | 郑州大鼎新材料科技有限公司 | Prestressing force insulated tension pole production method |
| CN107310178A (en) * | 2017-07-04 | 2017-11-03 | 上海思源高压开关有限公司 | A kind of preparation method of aramid fiber insulated tension pole |
| WO2018006713A1 (en) * | 2016-07-05 | 2018-01-11 | 江苏神马电力股份有限公司 | Insulation pull bar |
| CN107877888A (en) * | 2017-10-31 | 2018-04-06 | 全球能源互联网研究院有限公司 | A kind of insulated tension pole prefabricated component preparation technology |
| CN108000900A (en) * | 2016-05-19 | 2018-05-08 | 西华大学 | Novel carbon fiber tube for university student formula car suspension and bonding process |
| CN109866439A (en) * | 2019-04-15 | 2019-06-11 | 郑州大鼎新材料科技有限公司 | A kind of insulating bar injection mold and the lever production technology that insulate |
| WO2024192904A1 (en) * | 2023-03-17 | 2024-09-26 | 华能昭觉风力发电有限公司 | Machining system for drop-out switch operating rod, and drop-out switch operating rod |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105261497A (en) * | 2015-08-25 | 2016-01-20 | 国网智能电网研究院 | High voltage level insulation pull rod prefabticated part and preparation process therefor |
| CN105261497B (en) * | 2015-08-25 | 2018-09-14 | 国网智能电网研究院 | A kind of voltage levels insulated tension pole prefabricated component and its preparation process |
| CN106548888B (en) * | 2015-09-16 | 2020-06-12 | 郑州大鼎新材料科技有限公司 | Production method of prestressed insulated pull rod |
| CN106548888A (en) * | 2015-09-16 | 2017-03-29 | 郑州大鼎新材料科技有限公司 | Prestressing force insulated tension pole production method |
| CN105328920B (en) * | 2015-12-07 | 2018-01-23 | 江苏神马电力股份有限公司 | The dip forming device and method of insulated tension pole |
| CN105328920A (en) * | 2015-12-07 | 2016-02-17 | 江苏神马电力股份有限公司 | Dipping molding device and method for insulating pull rods |
| CN108000900B (en) * | 2016-05-19 | 2019-08-06 | 西华大学 | Novel carbon fiber tube for university student formula car suspension and bonding process |
| CN108000900A (en) * | 2016-05-19 | 2018-05-08 | 西华大学 | Novel carbon fiber tube for university student formula car suspension and bonding process |
| CN106182800A (en) * | 2016-06-28 | 2016-12-07 | 上海腾炎新材料有限公司 | A kind of SF6 primary cut-out insulated tension pole production technology |
| WO2018006713A1 (en) * | 2016-07-05 | 2018-01-11 | 江苏神马电力股份有限公司 | Insulation pull bar |
| CN106229170A (en) * | 2016-07-29 | 2016-12-14 | 全球能源互联网研究院 | A kind of insulated tension pole and preparation method thereof |
| CN107310178A (en) * | 2017-07-04 | 2017-11-03 | 上海思源高压开关有限公司 | A kind of preparation method of aramid fiber insulated tension pole |
| CN107877888A (en) * | 2017-10-31 | 2018-04-06 | 全球能源互联网研究院有限公司 | A kind of insulated tension pole prefabricated component preparation technology |
| CN107877888B (en) * | 2017-10-31 | 2023-11-14 | 全球能源互联网研究院有限公司 | Preparation process of insulation pull rod prefabricated member |
| CN109866439A (en) * | 2019-04-15 | 2019-06-11 | 郑州大鼎新材料科技有限公司 | A kind of insulating bar injection mold and the lever production technology that insulate |
| WO2024192904A1 (en) * | 2023-03-17 | 2024-09-26 | 华能昭觉风力发电有限公司 | Machining system for drop-out switch operating rod, and drop-out switch operating rod |
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Application publication date: 20150121 |