CN104134527B - Pouring current transformer and device body fixed structure, casting mold, production method - Google Patents
Pouring current transformer and device body fixed structure, casting mold, production method Download PDFInfo
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- CN104134527B CN104134527B CN201310361402.XA CN201310361402A CN104134527B CN 104134527 B CN104134527 B CN 104134527B CN 201310361402 A CN201310361402 A CN 201310361402A CN 104134527 B CN104134527 B CN 104134527B
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Abstract
The invention discloses a kind of pouring current transformer and device body fixed structure, casting mold, production method, this device body fixed structure includes the device body of positive placement location and is placed in base plate below device body, is provided with cross-over block between device body and base plate；It is additionally provided with two ends between device body and base plate and be fastenedly connected bundle component to bundle device body Secondary Winding with base plate below base plate, the flexible insulation pipe that bundle component includes and be located in the bandage in insulation tube.Device body is fixed with internal model by the way of supporting binding, the insulation distance of device body bottom can be ensured by the thickness of cross-over block it is not necessary to be adjusted it is often more important that, the adopted insulation tube of binding（Except two-port）It has been reserved in cast internal, so may insure that bandage is directly extracted out after being cast in insulation tube, both enabled the fixation of device body, do not affect to pour into a mould the performance of product again, it is convenient in demoulding, reduce the difficulty of demoulding later product processed, save labour force.
Description
Technical field
The present invention relates to a kind of pouring current transformer and device body fixed structure, casting mold, production method.
Background technology
The casting mold that pouring current transformer is used is generally divided into internal model and external mold, wherein internal model is used for the device body of fixed current transformer, what external mold had that the internal model that a confession fixes device body puts into pours into die cavity, and so moulding by casting intracavity in external mold injects the molding that casting solution can achieve current transformer.Traditional casting mold by the way of lifting cast, as shown in Figure 1-2, be inverted by whole device body, and that is, two primary connection terminals 61 of device body primary conductive bar 11 end are down；Three groups of lifting screw rods 41 are vertically coated with the internal model cover plate 31 of side with device, every group of lifting screw rod 41 corresponds to three loop configuration of device body Secondary Winding 21 respectively, and it is connected with, in the lower end of every group of lifting screw rod, the arc boatswain chair 51 being sticked on the arc surface of corresponding loop configuration top that coincide, by insulating cloth tape, boatswain chair 51 is tightened with Secondary Winding 21, you can realize the lifting of device body.
During cast, device body is inverted the moulding by casting intracavity being put in external mold, thus pourable go out current transformer as shown in Figure 3, Figure 4, wherein, Secondary Winding 21, primary conductive bar 11, primary connection terminal 61 and three boatswain chairs 51 are embedded in pour mass 71, and the insulation distance between Secondary Winding and pour mass bottom surface is by Secondary Winding and the decision of the distance between internal model cover plate, the lower deep length realization by adjustment lifting screw rod 41 for this distance.Because the current transformer shown in Fig. 3, Fig. 4 is the reprocessed finished product of the demoulding, for firm moulding by casting and the not demoulding current transformer, first to twist one by one in the demoulding and remove fixing nut on screw rod, could will realize the demoulding, the demoulding is difficult, increased the labor intensity of workman；Importantly, each lifting screw rod of casting mold to be also embedded in cast internal, screw rod to be back-outed or clip the screw portion exposing outside pour mass after demoulding, waste time and energy.
Content of the invention
It is an object of the invention to provide a kind of device body fixed structure of pouring current transformer being easy to the demoulding, in order to the casting mold that solves the problems, such as existing pouring current transformer, using lifting fixed form, the demoulding causing and post processing are wasted time and energy；Simultaneously present invention also offers the cast production method of a kind of casting mold using this fixed structure, the current transformer by the cast of this casting mold and this current transformer.
The device body fixed structure of the pouring current transformer of the present invention adopts the following technical scheme that：A kind of device body fixed structure of pouring current transformer, including the device body of positive placement location be placed in base plate below device body, be provided between device body and base plate for eyelid retractor body and be reserved in the internal cross-over block of cast after device body is poured；It is additionally provided with two ends between device body and base plate and is being fastenedly connected the bundle component to bundle device body Secondary Winding with base plate below base plate, bundle component includes being reserved in the internal flexible insulation pipe of cast after device body is poured and is located in bandage in insulation tube, extracting out after device body is poured.
Described bundle component has three, and three bundle components are rotating around in three loop configuration being contained in Secondary Winding.
Described insulation tube is fiberglass pipe.
The casting mold of the pouring current transformer of the present invention adopts the following technical scheme that：A kind of casting mold of pouring current transformer, including internal model, described internal model includes base plate and is placed on the base plate upper face, cross-over block for supporting the current mutual inductor body of positive placement location, inner membrance also includes two ends and is fastenedly connected bundle component to bundle the Secondary Winding of device body and base plate below base plate, and bundle component includes being reserved in the internal flexible insulation pipe of cast after device body is poured and is located in bandage in insulation tube, extracting out after device body is poured.
Described bundle component has three, and three bundle components are rotating around in three loop configuration being contained in Secondary Winding.
Described insulation tube is fiberglass pipe.
The pouring current transformer of the present invention adopts the following technical scheme that：A kind of pouring current transformer, it is embedded in interior pour mass including device body and by device body, two primary connection terminals of device body are arranged upward, the Secondary Winding bottom of described device body supports to be provided with and is embedded in the internal cross-over block of cast, the bottom surface of cross-over block is concordant with the bottom surface of pour mass, around equipped with being embedded in, cast is internal, the flexible insulation pipe for wearing bandage before the cast of device body in Secondary Winding, the two ends of insulation tube are passed by the bottom surface of pour mass.
Described insulation tube has three, and three insulation tubes are rotating around in three loop configuration being contained in Secondary Winding.
Described insulation tube is fiberglass pipe.
The production method of the pouring current transformer of the present invention adopts the following technical scheme that：A kind of production method of pouring current transformer it is characterised in that：The method is poured into a mould using above-mentioned casting mold, and step is as follows,
1), holder body：First the cross-over block of internal model is placed on base plate, then device body is just being put and be placed on cross-over block, finally using bundle component, device body and base plate are bundled, two bandages, through after base plate, are fastenedly connected below base plate by the two ends of bundle component；
2）, matched moulds：The internal model fixing device body is positioned over the moulding by casting intracavity of external mold；
3）, cast：Inject epoxy resin to the moulding by casting intracavity of external mold, epoxy resin finally solidify to form pour mass；
4）, the demoulding：The bandage of bundle component is extracted out in insulation tube, knocks out base plate.
Using the device body fixed structure of said structure, device body is fixed with internal model by the way of supporting binding, the insulation distance of device body bottom can be ensured by the thickness of cross-over block it is not necessary to be adjusted it is often more important that, the adopted insulation tube of binding（Except two-port）It has been reserved in cast internal, so may insure that bandage is directly extracted out after being cast in insulation tube, both enabled the fixation of device body, do not affect to pour into a mould the performance of product again, it is convenient in demoulding, reduce the difficulty of demoulding later product processed, save labour force.
Brief description
Fig. 1 is the device body of existing pouring current transformer and the assembling schematic diagram of casting mold（Do not comprise external mold）；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the structural representation of the current transformer using the casting mold cast in Fig. 1（After process）；
Fig. 4 is the right view of Fig. 3；
Fig. 5 is a kind of use state figure of embodiment of pouring current transformer casting mold of the present invention（Do not comprise external mold）；
Fig. 6 is the right view of Fig. 4；
Fig. 7 is the structural representation of the current transformer using the casting mold cast in Fig. 4；
Fig. 8 is the right view of Fig. 7.
Specific embodiment
The embodiment of the casting mold of the pouring current transformer of the present invention：As viewed in figures 5-8, mainly by external mold（In figure does not show）Constitute with internal model, internal model includes base plate 5 and is placed on the base plate 5 upper face, cross-over block 6 for supporting current mutual inductor body, the material of cross-over block 6 is politef, its thickness should ensure that the insulation distance between device body and base plate 5 requires, in placement device body, device body should be made just to put, that is, all upward, device body Secondary Winding 3 is supported with cross-over block 6 and is engaged the primary connection terminal 4 at device body primary conductive bar 1 both ends.Six through holes are offered on base plate 5, six through holes are divided into one group two-by-two, three groups of through holes are corresponded with three loop configuration of Secondary Winding 3 respectively, and two through holes in every group of through hole are arranged symmetrically in Secondary Winding 3 axis both sides, rotating around equipped with a bundle component in three loop configuration of Secondary Winding 3, bundle component includes flexible insulation pipe 2, insulation tube 2 adopts fiberglass pipe, the two ends of each insulation tube 2 are passed by below base plate 5 through each self-corresponding two through holes respectively, are equipped with a bandage in each insulation tube 2 respectively（In figure does not show）, bandage adopts iron wire, and the two ends of iron wire are passed by the two ends of corresponding insulation tube 2 respectively, the two ends of each iron wire are screwed together and can achieve that device body and the binding of base plate 5 are fixed.In the present embodiment, base plate 5, cross-over block 6 and bundle component together constitute device body fixed structure.
During cast, device body is just being placed in the moulding by casting intracavity of external mold, so just pourable go out current transformer as shown in Figure 7, Figure 8, wherein Secondary Winding 3, primary conductive bar 1, primary connection terminal 4, cross-over block 6 and insulation tube 2 be embedded in pour mass 7.Because the current transformer shown in Fig. 7, Fig. 8 is the reprocessed finished product of the demoulding, for firm moulding by casting and the not demoulding current transformer, the both ends of insulation tube 2 are all beyond pour mass 7, so in the demoulding, first each iron wire is loosened, then extract out in each self-corresponding insulation tube 2, finally knock out base plate 5.
Above-described embodiment specific operation process is as follows：
Holder body：First device body is just being placed on the cross-over block 6 on base plate 5, three are installed with the insulation tube 2 of iron wire in advance rotating around in three loop configuration being contained in Secondary Winding 3, and so that the two ends of each insulation tube 2 is passed by each self-corresponding two through holes respectively, the two ends of so iron wire are passed by below base plate 5, the two ends that each iron wire is passed are threaded together, to realize tightening of Secondary Winding 3 and base plate 5, each through hole applies sealant sealing before cast；
Matched moulds：The internal model fixing device body is positioned over the moulding by casting intracavity of external mold, equally will ensure the positive placement location of device body；
Cast：Inject a certain amount of epoxy resin to the moulding by casting intracavity of external mold, treat that epoxy resin finally solidify to form pour mass；
The demoulding：After casting complete, each iron wire is extracted out from corresponding insulation tube 2, insulation tube 2（Except two-port）All stay in pour mass with cross-over block 6, pour mass 7 will be exposed and insulate after tube portion cuts, and knock out base plate 5 and complete the demoulding.
In other embodiments, the mode that installs around of Secondary Winding has multiple, can adopt single binding, only tie up the centre position in Secondary Winding, can certainly be intended to ensure that insulation tube and bandage are passed by below base plate using staggered form binding, no matter which kind of bundlees mode using.
The embodiment of the device body fixed structure of the pouring current transformer of the present invention：As shown in Figure 5, Figure 6, its structure is consistent with the structure of the device body fixed structure of above-described embodiment, and its content will not be described here.
The embodiment of the pouring current transformer of the present invention：As Fig. 7, shown in Fig. 8, this current transformer is formed by the casting mold cast of above-described embodiment, it is filled in interior pour mass 7 including device body and by device body, two primary connection terminals 4 on device body primary conductive bar 1 are arranged upward, Secondary Winding 3 bottom of device body supports and is provided with the cross-over block 6 being embedded in pour mass 7, the bottom surface of cross-over block 6 is concordant with the bottom surface of pour mass 7, the top of Secondary Winding 3 is crimped with three respectively rotating around being contained in three loop configuration, it is embedded in the flexible insulation pipe 2 in pour mass 7, insulation tube 2 is fiberglass pipe, the two ends of each insulation tube 2 are passed by the bottom surface of pour mass 7.
The embodiment of the production method of the pouring current transformer of the present invention：The method is poured into a mould using above-mentioned casting mold, and step is as follows,
1）, holder body：First device body is just being placed on the cross-over block 6 on base plate 5, three are installed with the insulation tube 2 of iron wire in advance rotating around in three loop configuration being contained in Secondary Winding 3, and so that the two ends of each insulation tube 2 is passed by each self-corresponding two through holes respectively, the two ends of so iron wire are passed by below base plate 5, the two ends that each iron wire is passed are threaded together, to realize tightening of Secondary Winding 3 and base plate 5, each through hole applies sealant sealing before cast；
2）, matched moulds：The internal model fixing device body is positioned over the moulding by casting intracavity of external mold, equally will ensure the positive placement location of device body；
3）, cast：Inject a certain amount of epoxy resin to the moulding by casting intracavity of external mold, treat that epoxy resin finally solidify to form pour mass；
4）, the demoulding：After casting complete, each iron wire is extracted out from corresponding insulation tube 2, insulation tube 2（Except two-port）All stay in pour mass with cross-over block 6, pour mass 7 will be exposed and insulate after tube portion cuts, and knock out base plate 5 and complete the demoulding.
Claims (10)
1. a kind of pouring current transformer device body fixed structure it is characterised in that：Including the device body of positive placement location be placed in base plate below device body, be provided between device body and base plate for eyelid retractor body and be reserved in the internal cross-over block of cast after device body is poured；It is additionally provided with two ends between device body and base plate and is fastenedly connected bundle component to bundle device body Secondary Winding with base plate below base plate, bundle component includes being reserved in the internal flexible insulation pipe of cast after device body is poured and is located in bandage in insulation tube, extracting out after device body is poured.
2. pouring current transformer according to claim 1 device body fixed structure it is characterised in that：Described bundle component has three, and three bundle components are rotating around in three loop configuration being contained in Secondary Winding.
3. pouring current transformer according to claim 1 and 2 device body fixed structure it is characterised in that：Described insulation tube is fiberglass pipe.
4. a kind of casting mold of pouring current transformer, including internal model it is characterised in that：Described internal model includes base plate and is placed on the base plate upper face, cross-over block for supporting the current mutual inductor body of positive placement location, inner membrance also includes two ends and is fastenedly connected bundle component to bundle the Secondary Winding of device body and base plate below base plate, and bundle component includes being reserved in the internal flexible insulation pipe of cast after device body is poured and is located in bandage in insulation tube, extracting out after device body is poured.
5. pouring current transformer according to claim 4 casting mold it is characterised in that：Described bundle component has three, and three bundle components are rotating around in three loop configuration being contained in Secondary Winding.
6. the pouring current transformer according to claim 4 or 5 casting mold it is characterised in that：Described insulation tube is fiberglass pipe.
7. a kind of pouring current transformer, including device body and by device body be embedded in pour mass, two primary connection terminals of device body arrange upward it is characterised in that：The Secondary Winding bottom of described device body supports to be provided with and is embedded in the internal cross-over block of cast, the bottom surface of cross-over block is concordant with the bottom surface of pour mass, around equipped with being embedded in, cast is internal, the flexible insulation pipe for wearing bandage before the cast of device body in Secondary Winding, the two ends of insulation tube are passed by the bottom surface of pour mass.
8. pouring current transformer according to claim 7 it is characterised in that：Described insulation tube has three, and three insulation tubes are rotating around in three loop configuration being contained in Secondary Winding.
9. the pouring current transformer according to claim 7 or 8 it is characterised in that：Described insulation tube is fiberglass pipe.
10. a kind of production method of pouring current transformer it is characterised in that：The method is poured into a mould using above-mentioned casting mold, and step is as follows,
1), holder body：First the cross-over block of internal model is placed on base plate, then device body is just being put and be placed on cross-over block, finally using bundle component, device body and base plate are bundled, two bandages, through after base plate, are fastenedly connected below base plate by the two ends of bundle component；
2）, matched moulds：The internal model fixing device body is positioned over the moulding by casting intracavity of external mold；
3）, cast：Inject epoxy resin to the moulding by casting intracavity of external mold, epoxy resin finally solidify to form pour mass；
4）, the demoulding：The bandage of bundle component is extracted out in insulation tube, knocks out base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361402.XA CN104134527B (en) | 2013-08-19 | 2013-08-19 | Pouring current transformer and device body fixed structure, casting mold, production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361402.XA CN104134527B (en) | 2013-08-19 | 2013-08-19 | Pouring current transformer and device body fixed structure, casting mold, production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104134527A CN104134527A (en) | 2014-11-05 |
| CN104134527B true CN104134527B (en) | 2017-03-01 |
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| CN201310361402.XA Expired - Fee Related CN104134527B (en) | 2013-08-19 | 2013-08-19 | Pouring current transformer and device body fixed structure, casting mold, production method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304306B (en) * | 2015-12-09 | 2017-04-05 | 天津市百利纽泰克电气科技有限公司 | A kind of packaging technology of state's network metering low-voltage current mutual inductor |
| CN113119370B (en) * | 2019-12-31 | 2024-08-16 | 中国科学院沈阳自动化研究所 | Manufacturing die and manufacturing method for fiber reinforced epoxy resin insulator |
| CN117577443B (en) * | 2024-01-16 | 2024-04-02 | 淄博速悦电子有限公司 | Combined current transformer and preparation process thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5896716A (en) * | 1981-12-04 | 1983-06-08 | Hitachi Ltd | Mold current transformer |
| CN2357403Y (en) * | 1998-11-25 | 2000-01-05 | 李成祥 | Dry-transformer winding conductor |
| CN1266270A (en) * | 1999-03-03 | 2000-09-13 | 黄建西 | Mutual inductor or transformer |
| CN201130598Y (en) * | 2007-12-10 | 2008-10-08 | 河南森源电气股份有限公司 | Low voltage coil locating structure of current transformer |
| CN201340800Y (en) * | 2009-02-13 | 2009-11-04 | 保定天威集团有限公司 | Fixing structure for secondary winding of current transformer |
| CN201689777U (en) * | 2010-04-14 | 2010-12-29 | 衡阳市南方互感器有限公司 | SF6 current transformer |
| CN202948833U (en) * | 2012-11-15 | 2013-05-22 | 平高集团有限公司 | Pouring-type current transformer secondary winding fixed structure and winding fixed frame of the same |
| CN202948838U (en) * | 2012-11-15 | 2013-05-22 | 平高集团有限公司 | Iron core fixing structure for pouring-type voltage transformer manufacture |
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2013
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| CN104134527A (en) | 2014-11-05 |
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Granted publication date: 20170301 |