CN103422399B - A kind of congruence pressure pressue device of wet method insulation molding part and forming method - Google Patents
A kind of congruence pressure pressue device of wet method insulation molding part and forming method Download PDFInfo
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- CN103422399B CN103422399B CN201310369129.5A CN201310369129A CN103422399B CN 103422399 B CN103422399 B CN 103422399B CN 201310369129 A CN201310369129 A CN 201310369129A CN 103422399 B CN103422399 B CN 103422399B
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Abstract
The invention discloses a kind of congruence pressure pressue device and forming method of wet method insulation molding part, device comprises the upper cover of lower ending opening upper end sealing, and base; The lower port of described upper cover is arranged on base by sealing ring; The upper end of described upper cover is provided with water inlet pipe and air bleeding valve; Described water inlet pipe is provided with Pressure gauge.Method applies impartial pressure by water filling dewing ground paper and wet moulding mould in congruence pressure pressue device, make the product produced can reach IEC60641.3.1 international standard, R angle size uniformity, density is at 1.1 ~ 1.25kg/cm3, mechanical strength is good, electrical strength is high, and product is not yielding.Congruence pressure pressue device manufacture craft is simple, is convenient to processing and installs, and forming method is convenient to implement, and implementation cost is low, and production efficiency is high.
Description
Technical field
The present invention relates to a kind of congruence pressure pressue device and forming method of wet method insulation molding part, belong to transformer zero power equipment processing technique field.
Background technology
Sulfate needle paper pulp does not float for raw material with 100% electrician's level in wet method insulation molding part, utilizes special mould, adopts the forming method of specialty to process, in oil-filled transformer power equipment, to ensure apparatus insulated electrical strength, mechanical strength.Wet method insulation molding part, because the complexity of product design, particular manufacturing craft make and the limitation of wet therapy forming process, causes that product wall unevenness is even, the not high (0.6-0.75kg/cm of density
2), the defect such as R angle easily produces space and layering, product is easily out of shape.
Summary of the invention
Goal of the invention: for prior art Problems existing with not enough, the invention provides a kind of congruence pressure pressue device and forming method of wet method insulation molding part, by congruence pressure pressue device and forming method with the use of, make insulation molding part's wall thickness of processing substantially evenly, density can reach 0.9-0.95 kg/cm
2, avoid generation space, R angle and the layering of insulation molding part, reduce deformation of products.
Technical scheme: a kind of congruence pressure pressue device of wet method insulation molding part, comprises the upper cover of lower ending opening upper end sealing, and base; The lower port of described upper cover is arranged on base by sealing ring; The upper end of described upper cover is provided with water inlet pipe and air bleeding valve; Described water inlet pipe is provided with Pressure gauge.
Described upper cover is divided into the two parts be integrated up and down, and top is semicircle cavity, and bottom is circular cylindrical cavity; Described lower port place is provided with radially ring edge outwardly, and ring edge and circular cylindrical cavity are integrated, and for making upper cover be fixedly mounted on cup dolly, further optimally, ring edge vertical thickness is greater than the cavity wall thickness of circular cylindrical cavity.
Described sealing ring is the annular waterstop ring corresponding with ring edge; The ring edge of described upper cover and the edge of base are equipped with corresponding screw; Described upper cover is mounted by means of bolts on base; Described waterstop ring is located between ring edge and base.
Described upper cover is 1800mm along the height of symmetry axis, and lower port diameter is that 2200mm(does not comprise annular edge of part); The water-resistant pressure of upper cover is 1-10kg/cm
2.
The lower end of described upper cover is provided with dewatering outlet; Dewatering outlet place is provided with water drain valve; Further optimally, described dewatering outlet is located at ring edge, radially runs through ring edge.
Further, the vertical height of the exhaust outlet of described air bleeding valve is equal to or greater than the height of upper cover, and the vertical height of water inlet pipe is equal to or greater than the height of upper cover.
Further, the ring edge of described upper cover and the edge of base are respectively equipped with 24 equally distributed screws, enhanced leaktightness effect.
A forming method for the wet method insulation molding part implemented by above-mentioned congruence pressure pressue device, is comprised the steps:
Step 1, is placed on the middle position of base by by lifting after the good l Water Paper base colligation of wet moulding Mold Making;
Step 2, covers high density insulating board semi-finished product l Water Paper on l Water Paper base and exposed wet moulding mould; And then cover upper sealing film slowly, uniformly, the edge of sealing film extends to outside the edge of base seal circle, when installing upper cover, makes the ring edge of upper cover be pressed in the edge of sealing film, thus after injection water, make high density insulating paper and water segregation;
Step 3, presses the upper cover of pressue device to be lifted on base by congruence, by the cooperation of bolt and screw, upper cover is fixedly mounted on base, and realizes water-stop by sealing ring;
Step 4, open air bleeding valve to be vented, open the cavity that water inlet pipe makes water fill (knowing whether hydraulic pressure reaches preset pressure by Pressure gauge) to be formed between upper cover and base, the pressure of water in cavity, film is made tightly to fit on l Water Paper base and wet moulding mould, and the applying pressure from all directions (pressure that produces is slightly different because of height of equalization, negligible, think that l Water Paper base and wet moulding mould bear the equalization of pressure of all directions) on l Water Paper base and wet moulding mould, make the contraction of l Water Paper base, densification by the pressure of water;
Step 5, after leaving standstill a period of time (technological requirement time), opens water drain valve, starts the pressure release that discharges water;
Step 6, after treating that water all discharges, unclamps the fastening bolt of base and upper cover successively, upper cover is removed, and removes sealing film (can reuse) and high density l Water Paper simultaneously, wet moulding mould and l Water Paper base are lifted into subsequent processing.
Further, the high density insulating paper that the high density insulating paper that the position that described l Water Paper base and exposed wet moulding mould protrude covers covers relative to other level and smooth positions is thicker, prevents sharp-pointed projection from damaging sealing film.
Further, when covering sealing film, make the ductility that sealing film keeps certain, to make it to be properly fit onto on l Water Paper base and wet moulding mould after congruence pressure pressue device water inlet pressurization, and do not damage.
Beneficial effect: compared with prior art, the congruence pressure pressue device of wet method insulation molding part provided by the invention and forming method, congruence pressure pressue device manufacture craft is simple, be convenient to processing and install, forming method is convenient to implement, show through measurement and practice, apparatus and method with the use of, the product produced can reach IEC60641.3.1 international standard, R angle size uniformity, density is at 1.1 ~ 1.25kg/cm3, mechanical strength is good, electrical strength is high, product is not yielding, and the domestic moulding process that there is no this series products maturation at present, forming method implementation cost of the present invention is low, production efficiency is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention device.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen into the application's claims limited range.
As shown in Figure 1, the congruence pressure pressue device of wet method insulation molding part, comprises the upper cover 5 of lower ending opening upper end sealing, and base 12; The lower port of upper cover 5 is arranged on base 12 by sealing ring 8; The upper end of upper cover 5 is provided with water inlet pipe 1, water inlet pipe 2 and air bleeding valve 11; Water inlet pipe 1 and water inlet pipe 2 are equipped with Pressure gauge 3.Wherein, upper cover 5 is 1800mm along the height of symmetry axis, and lower port diameter is that 2200mm(does not comprise annular edge of part); The water-resistant pressure of upper cover 5 is 1-10kg/cm
2.
Upper cover 5 is divided into the two parts be integrated up and down, and top is semicircle cavity, and bottom is circular cylindrical cavity; Lower port place is provided with radially ring edge outwardly, and ring edge and circular cylindrical cavity are integrated, and for making upper cover 5 be fixedly mounted on cup dolly 12, further optimally, ring edge vertical thickness is greater than the cavity wall thickness of circular cylindrical cavity.
Sealing ring 8 is the annular waterstop ring 8 corresponding with ring edge; The ring edge of upper cover 5 and the edge of base 12 are equipped with 24 corresponding screws; 24 screws on ring edge distribute a week of ring edge equably, and 24 screws simultaneously on base 12 are evenly distributed in one week of base 12, and upper cover 5 is fixedly mounted on base 12 by M24 bolt 6; Annular waterstop ring 8 is located between ring edge and base 12.
Upper cover 5 ring edge is provided with dewatering outlet, and ring edge is radially run through in dewatering outlet, and dewatering outlet place is provided with water drain valve 7.
The vertical height of the exhaust outlet of air bleeding valve 11 is equal to or greater than the height of upper cover 5, and the vertical height of water inlet pipe 1 and water inlet pipe 2 is equal to or greater than the height of upper cover 5.
The forming method of the wet method insulation molding part implemented by above-mentioned congruence pressure pressue device, is comprised the steps:
1, product l Water Paper base 10 is made with wet moulding mould 9, and good by technological operation guiding book requirement colligation, and surface need be completely coated with clean elastic cord.
2, open congruence pressure pressue device upper cover 5, wet moulding mould 9, l Water Paper base 10 be lifted into base 12(congruence pressure pressue device base 12) on.
3, wet moulding mould 9, l Water Paper base 10 surface high density insulating board semi-finished product l Water Paper are covered, wedge angle position need cover thicker, prevents sharp parts from damaging sealing film 4.
4, sealing film 4 is slow, uniform fold on wet moulding mould 9, l Water Paper base 10, and keeps certain ductility, so that congruence makes it to be properly fit onto on wet moulding mould 9, l Water Paper base 10 after pressing pressue device water inlet, pressurization.
5, congruence pressed pressue device upper cover 5 to be lifted on base 12, the 4-8 root in 24 M24 bolts 6 is aimed at the corresponding screw of base 12, bolt 6 is screwed in base 12 screw certain depth, then slowly put down upper cover 5.
6, successively bolt 6 is screwed in corresponding screwed hole, utilize the fastening good whole bolt 6 of automatic fastening instrument.
7, open air bleeding valve 11 to be vented, water inlet pipe 1, water inlet pipe 2 are connected outside water pipe respectively, opens water intaking valve, current drop down the chamber portion entering upper cover 5 and base 12 formation.
8, after continuing about 40 minutes, water fills whole chamber portion, because (Pressure gauge 3 has display to the pressure of water, preset pressure is 2.5kg/cm2, needing according to product density can up-down adjustment), sealing film 4 is tightly fitted on wet moulding mould 9, l Water Paper base 10, and equalization apply pressure to each position (each site pressure equalization of product as illustrated by the arrows in fig. 1, can be made to be 2.5kg/cm2) of wet moulding mould 9, l Water Paper base 10.
9, after arriving Pressure gauge 3 setting pressure, rely on the pressure of water, l Water Paper base 10 shunk, fine and close.Once have space in upper cover 5, water can supplement at any time and enter space, ensures that the pressure stability in whole upper cover 5 cavity is 2.5kg/cm2.
10, after arriving the process time (30 minutes), open water drain valve 7, start the pressure release that discharges water.
11, after water all discharges, unclamp upper cover 5 successively, fastening bolt 6 that base 12 connects, need slow crawl upper cover 5 carefully to be removed, in case upper cover 5 internal suction damages sealing film 4 and l Water Paper base 10.
12, sealing film 4 is carefully taken away (sealing film 4 can reuse), and remove the high density insulating board semi-finished product l Water Paper covered on l Water Paper base 10, check surperficial pressurized condition.
13, whole pressurization flow process completes, and wet moulding mould 9, l Water Paper base 10 are lifted into baking operation together and dry.
Product wall thickness after this congruence pressure pressue device and forming method pressurization is substantially even, density can reach 0.9-0.95kg/cm
2, effectively can avoid generation space, R angle and layering, reduce deformation of products.
Claims (9)
1. a congruence pressure pressue device for wet method insulation molding part, is characterized in that: the upper cover comprising the sealing of lower ending opening upper end, and base; The lower port of described upper cover is arranged on base by sealing ring; The upper end of described upper cover is provided with water inlet pipe and air bleeding valve; Described water inlet pipe is provided with Pressure gauge;
Described upper cover is divided into the two parts be integrated up and down, and top is semicircle cavity, and bottom is circular cylindrical cavity; Described lower port place is provided with radially ring edge outwardly, and ring edge and circular cylindrical cavity are integrated, and for making upper cover be fixedly mounted on cup dolly, ring edge vertical thickness is greater than the cavity wall thickness of circular cylindrical cavity.
2. the congruence pressure pressue device of wet method insulation molding part as claimed in claim 1, is characterized in that: described sealing ring is the annular waterstop ring corresponding with ring edge; The ring edge of described upper cover and the edge of base are equipped with corresponding screw; Described upper cover is mounted by means of bolts on base; Described waterstop ring is located between ring edge and base.
3. the congruence pressure pressue device of wet method insulation molding part as claimed in claim 1, is characterized in that: described upper cover is 1800mm along the height of symmetry axis, and lower port diameter is 2200mm; The water-resistant pressure of upper cover is 1-10kg/cm
2.
4. the congruence pressure pressue device of wet method insulation molding part as claimed in claim 1, is characterized in that: the lower end of described upper cover is provided with dewatering outlet; Dewatering outlet place is provided with water drain valve; Further optimally, described dewatering outlet is located at ring edge, radially runs through ring edge.
5. the congruence pressure pressue device of wet method insulation molding part as claimed in claim 1, it is characterized in that: the vertical height of the exhaust outlet of described air bleeding valve is equal to or greater than the height of upper cover, the vertical height of water inlet pipe is equal to or greater than the height of upper cover.
6. the congruence pressure pressue device of wet method insulation molding part as claimed in claim 1, is characterized in that: the ring edge of described upper cover and the edge of base are respectively equipped with 24 equally distributed screws, enhanced leaktightness effect.
7. required the forming method of the wet method insulation molding part that the congruence pressure pressue device of the wet method insulation molding part described in 1-6 any one is implemented by above-mentioned profit, it is characterized in that, comprise the steps:
Step 1, is placed on the middle position of base by by lifting after the good l Water Paper base colligation of wet moulding Mold Making;
Step 2, covers high density insulating board semi-finished product l Water Paper on l Water Paper base and exposed wet moulding mould; And then cover upper sealing film slowly, uniformly, the edge of sealing film extends to outside the edge of base seal circle, when installing upper cover, makes the ring edge of upper cover be pressed in the edge of sealing film, thus after injection water, make high density insulating paper and water segregation;
Step 3, presses the upper cover of pressue device to be lifted on base by congruence, by the cooperation of bolt and screw, upper cover is fixedly mounted on base, and realizes water-stop by sealing ring;
Step 4, open air bleeding valve to be vented, open the cavity that water inlet pipe makes water fill to be formed between upper cover and base, the pressure of water in cavity, film is made tightly to fit on l Water Paper base and wet moulding mould, and equalization apply pressure to l Water Paper base and wet moulding mould from all directions, by the pressure of water, l Water Paper base is shunk, fine and close;
Step 5, after leaving standstill a period of time, opens water drain valve, starts the pressure release that discharges water;
Step 6, after treating that water all discharges, unclamps the fastening bolt of base and upper cover successively, upper cover is removed, and removes sealing film and high density l Water Paper simultaneously, and wet moulding mould and l Water Paper base are lifted into subsequent processing.
8. the forming method of wet method insulation molding part as claimed in claim 7, it is characterized in that: the high density insulating paper that the high density insulating paper that the position that described l Water Paper base and exposed wet moulding mould protrude covers covers relative to other level and smooth positions is thicker, prevent sharp-pointed projection from damaging sealing film.
9. the forming method of wet method insulation molding part as claimed in claim 7, it is characterized in that: when covering sealing film, make the ductility that sealing film keeps certain, to make it to be properly fit onto on l Water Paper base and wet moulding mould after congruence pressure pressue device water inlet pressurization.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310369129.5A CN103422399B (en) | 2013-08-22 | 2013-08-22 | A kind of congruence pressure pressue device of wet method insulation molding part and forming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310369129.5A CN103422399B (en) | 2013-08-22 | 2013-08-22 | A kind of congruence pressure pressue device of wet method insulation molding part and forming method |
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| CN103422399A CN103422399A (en) | 2013-12-04 |
| CN103422399B true CN103422399B (en) | 2015-09-02 |
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Citations (6)
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|---|---|---|---|---|
| CA2422997A1 (en) * | 2000-09-22 | 2002-03-28 | Praxair Technology, Inc. | Cold isopressing method |
| CN1490153A (en) * | 2002-10-16 | 2004-04-21 | 朱勉学 | Dividing cylinder style cold isopressing process |
| CN2810953Y (en) * | 2005-07-15 | 2006-08-30 | 毛广华 | Internal pressing type quasi-isostatic pressing device for product formed by cylindrical mold |
| CN101590701A (en) * | 2008-05-27 | 2009-12-02 | 日机装株式会社 | Isostatic compaction device |
| CN101823286A (en) * | 2010-05-11 | 2010-09-08 | 刘先兵 | Method for molding large ceramic element through two steps by using cold isostatic pressing |
| CN203440717U (en) * | 2013-08-22 | 2014-02-19 | 泰州新源电工器材有限公司 | Full-equal-pressure pressurization device of wet insulation forming piece |
-
2013
- 2013-08-22 CN CN201310369129.5A patent/CN103422399B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2422997A1 (en) * | 2000-09-22 | 2002-03-28 | Praxair Technology, Inc. | Cold isopressing method |
| CN1490153A (en) * | 2002-10-16 | 2004-04-21 | 朱勉学 | Dividing cylinder style cold isopressing process |
| CN2810953Y (en) * | 2005-07-15 | 2006-08-30 | 毛广华 | Internal pressing type quasi-isostatic pressing device for product formed by cylindrical mold |
| CN101590701A (en) * | 2008-05-27 | 2009-12-02 | 日机装株式会社 | Isostatic compaction device |
| CN101823286A (en) * | 2010-05-11 | 2010-09-08 | 刘先兵 | Method for molding large ceramic element through two steps by using cold isostatic pressing |
| CN203440717U (en) * | 2013-08-22 | 2014-02-19 | 泰州新源电工器材有限公司 | Full-equal-pressure pressurization device of wet insulation forming piece |
Non-Patent Citations (1)
| Title |
|---|
| 变压器引线绝缘成型件工艺研究;宣白云等;《泰州职业技术学院学报》;20080228;第08卷(第01期);7-9 * |
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Inventor after: Gao Bulin Inventor after: Wang Jun Inventor after: Zhu Hesheng Inventor after: Li Xunbai Inventor before: Wang Jun Inventor before: Zhu Hesheng Inventor before: Li Xunbai |
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