CN104143422B - Casting type voltage mutual inductor and device body fixed structure, casting mold, production method - Google Patents
Casting type voltage mutual inductor and device body fixed structure, casting mold, production method Download PDFInfo
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- CN104143422B CN104143422B CN201310361323.9A CN201310361323A CN104143422B CN 104143422 B CN104143422 B CN 104143422B CN 201310361323 A CN201310361323 A CN 201310361323A CN 104143422 B CN104143422 B CN 104143422B
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Abstract
The invention discloses a kind of casting type voltage mutual inductor 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 the base plate below device body, being provided with cross-over block between device body and base plate；Being additionally provided with bundle component winding bundled with base plate between device body and base plate, bundle component includes flexible insulation pipe and the bandage being located in insulation tube.Device body uses the mode supporting binding to fix with interior mould, insulation distance bottom device body can be ensured by the thickness of cross-over block, it is made without regulation, it is often more important that, bundle used insulation tube (except two-port) and be reserved in pour mass, so may insure that bandage is directly extracted out after being cast in insulation tube, the fixation of device body can be realized, the most do not affect the performance of cast product, be 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 casting type voltage mutual inductor and device body fixed structure, casting mold, production method.
Background technology
The casting mold that casting type voltage mutual inductor is used is generally divided into Nei Mo and external mold, interior mould is for the device body of fixed voltage transformer, what external mold had that a confession fixes that the interior mould of device body puts into pours into die cavity, and so moulding by casting intracavity at external mold injects casting solution and can realize the molding of voltage transformer.Traditional casting mold uses the mode of lifting cast, as it is shown in figure 1, whole device body is inverted, i.e. two binding posts 61 in device body Secondary Winding 51 are down；Vertically it is coated with two groups of lifting screw rods 31 with device on the interior die cap plate 41 of side, is often organizing the lower end mouth of connecting trough U-shaped suspension member 21 upward respectively of lifting screw rod 31, the upper side frame of winding 11 of device body is being hung on two U-shaped suspension members 21, the lifting of device body can be realized.
During cast, device body is inverted the moulding by casting intracavity being put in external mold, the most pourable go out voltage transformer as shown in Figure 2 and Figure 3, wherein, winding 11, Secondary Winding 51, binding post 61 and three suspension members 21 are all imbedded in pour mass 71, and the insulation distance between a winding 11 and pour mass 71 bottom surface is determined by the distance between a winding 11 and interior die cap plate 41, this distance is realized by the lower deep length adjusting lifting screw rod 31.Owing to the voltage transformer shown in Fig. 2, Fig. 3 is the reprocessed finished product of the demoulding, for firm moulding by casting and the voltage transformer of the not demoulding, want when the demoulding to twist the most one by one and remove nut fixing on screw rod, could will realize the demoulding, demoulding difficulty, adds the labor intensity of workman；The more important thing is, each lifting screw rod of casting mold is also embedded in pour mass, screw rod to be back-outed or clip the screw portion exposing outside pour mass, wastes time and energy.
Summary of the invention
It is an object of the invention to provide the device body fixed structure of a kind of casting type voltage mutual inductor being easy to the demoulding, in order to solve the problem that the casting mold of existing casting type voltage mutual inductor uses the lifting demoulding that causes of fixed form and post processing to waste time and energy；Present invention also offers simultaneously a kind of use this fixed structure casting mold, by the voltage transformer of this casting mold cast and the cast production method of this voltage transformer.
The device body fixed structure of the casting type voltage mutual inductor of the present invention adopts the following technical scheme that the device body fixed structure of a kind of casting type voltage mutual inductor, including the device body of positive placement location be placed in the base plate below device body, be provided with between device body and base plate for eyelid retractor body and the cross-over block that is reserved in pour mass after device body is poured；Being additionally provided with two ends between device body and base plate and be fastenedly connected the bundle component winding to be bundled with base plate below base plate, bundle component is included in the flexible insulation pipe being reserved in pour mass after device body is poured and is located in bandage in insulation tube, that extract out after device body is poured.
Described bundle component has two, and two bundle components are rotating around on the lower frame being contained in a winding.
Described insulation tube is fiberglass pipe.
The casting mold of the casting type voltage mutual inductor of the present invention adopts the following technical scheme that the casting mold of a kind of casting type voltage mutual inductor, including interior mould, described interior mould includes base plate and is placed on base plate upper face, for supporting the cross-over block of the voltage transformer device body of positive placement location, inner membrance also includes that two ends are fastenedly connected with by bundle component that the one of device body time winding bundles with base plate below base plate, bundle component is included in the flexible insulation pipe being reserved in pour mass after device body is poured and is located in insulation tube, the bandage extracted out after device body is poured.
Described bundle component has two, and two bundle components are rotating around on the lower frame being contained in a winding.
Described insulation tube is fiberglass pipe.
The casting type voltage mutual inductor of the present invention adopts the following technical scheme that a kind of casting type voltage mutual inductor, it is embedded in interior pour mass including device body and by device body, two binding posts of device body are arranged upward, winding bottom support of described device body is provided with the cross-over block being embedded in pour mass, the bottom surface of cross-over block is concordant with the bottom surface of pour mass, around equipped with being embedded in flexible insulation pipe in pour mass, that supply to wear bandage before device body is poured into a mould on winding, the two ends of insulation tube are passed by the bottom surface of pour mass.
Described insulation tube has two, and two insulation tubes are rotating around on the lower frame being contained in a winding.
Described insulation tube is fiberglass pipe.
The production method of the casting type voltage mutual inductor of the present invention adopts the following technical scheme that the production method of a kind of casting type voltage mutual inductor, and the method utilizes above-mentioned casting mold to pour into a mould, and step is as follows,
1), holder body: first the cross-over block of interior mould is placed on base plate, then device body is just being put and be placed on cross-over block, finally utilizing bundle component to be bundled with base plate by device body, two bandages, after base plate, are fastenedly connected below base plate by the two ends of bundle component；
2), matched moulds: the interior mould fixing device body is positioned over the moulding by casting intracavity of external mold；
3), cast: to the moulding by casting intracavity injection ring epoxy resins 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.
Use the device body fixed structure of said structure, device body uses the mode supporting binding to fix with interior mould, insulation distance bottom device body can be ensured by the thickness of cross-over block, it is made without regulation, the more important thing is, bundle used insulation tube (except two-port) to be reserved in pour mass, so may insure that bandage is directly extracted out after being cast in insulation tube, the fixation of device body can be realized, the most do not affect the performance of cast product, it is convenient in demoulding, reduces the difficulty of demoulding later product processed, save labour force.
Accompanying drawing explanation
Fig. 1 is device body and the assembling schematic diagram (not comprising external mold) of casting mold of existing casting type voltage mutual inductor；
Fig. 2 is the structural representation (after process) of the voltage transformer using the casting mold cast in Fig. 1；
Fig. 3 is the right view of Fig. 2；
Fig. 4 is the use state diagram (not comprising external mold) of a kind of embodiment of the casting type voltage mutual inductor casting mold of the present invention；
Fig. 5 is the structural representation of the voltage transformer using the casting mold cast in Fig. 4；
Fig. 6 is the right view of Fig. 5.
Detailed description of the invention
The embodiment of the casting mold of the casting type voltage mutual inductor of the present invention: as Figure 4-Figure 6, mainly it is made up of external mold (not shown) and Nei Mo, interior mould includes base plate 1 and is placed on base plate 1 upper face, for supporting the cross-over block 6 of voltage transformer device body, the material of cross-over block 6 is politef, its thickness should ensure that the insulation distance requirement between device body and base plate 1, when placement device body, device body should be made just to put, i.e. two binding posts 4 in device body Secondary Winding 3 are the most upward, and winding 2 of device body supports with cross-over block 6 and contacts cooperation.Base plate 1 offers four through holes, four through holes are divided into one group two-by-two, often two through holes in group through hole are arranged symmetrically in the both sides of winding 2 lower frame, around equipped with two bundle components the most spaced apart on the lower frame of a winding 2, bundle component includes flexible insulation pipe 5, insulation tube 5 uses fiberglass pipe, the two ends of each insulation tube 5 pass by below base plate 1 through each self-corresponding two through holes respectively, a bandage (not shown) it is equipped with respectively in each insulation tube 5, bandage uses ferrum silk, the two ends of iron wire are passed by the two ends of corresponding insulation tube 5 respectively, the two ends of each iron wire are screwed together and can realize the binding of device body and base plate 1 and fix.In the present embodiment, base plate 1, 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, the most pourable go out voltage transformer as shown in Figure 5, Figure 6, wherein winding 2, Secondary Winding 3, binding post 4, cross-over block 6 and insulation tube 5 are all imbedded in pour mass 7.Owing to the voltage transformer shown in Fig. 5, Fig. 6 is the reprocessed finished product of the demoulding, for firm moulding by casting and the voltage transformer of the not demoulding, the both ends of insulation tube 5 are all beyond pour mass 7, so when the demoulding, first each iron wire is loosened, then extract out in each self-corresponding insulation tube 5, finally knock out base plate 1.
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 1, by bundle component rotating around on the lower frame being contained in a winding 2, and make the two ends of each insulation tube 5 be passed by each self-corresponding two through holes respectively, so two ends of iron wire are passed by below base plate 1, the two ends that each iron wire passes are threaded together, to realize tightening of winding 2 and base plate 1, each through hole is coated with sealant sealing before cast；
Matched moulds: the interior mould fixing device body is positioned over the moulding by casting intracavity of external mold, the positive placement location of device body to be ensured；
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, extracts out each iron wire from corresponding insulation tube 5, and insulation tube 5(is except both ends) and cross-over block 6 all stay in pour mass 7, will expose after pour mass 7 insulation tube part cuts, and knock out base plate 1 and i.e. complete the demoulding.
In other embodiments, the insulation tube mode that installs around on a winding has multiple, can be wound on the upper side frame of each winding, naturally it is also possible to uses staggered form binding, no matter uses which kind of binding mode, is intended to ensure that insulation tube and bandage are passed by below base plate.
The embodiment of the device body fixed structure of the casting type voltage mutual inductor of the present invention: as shown in Figure 4, its structure is consistent with the structure of the device body fixed structure of above-described embodiment, and its content does not repeats them here.
The embodiment of the casting type voltage mutual inductor of the present invention: such as Fig. 5, shown in Fig. 6, this voltage transformer is poured into a mould by the casting mold of above-described embodiment and is formed, including device body and device body to be embedded in interior pour mass 7, two binding posts 4 in device body Secondary Winding 3 are arranged upward, winding 2 bottom support of device body is provided with the cross-over block 6 being flush-mounted in pour mass 7, the bottom surface of cross-over block 6 is concordant with the bottom surface of pour mass 7, be crimped with inside the lower frame of winding 2 two the most spaced apart, the flexible insulation pipe 5 being embedded in pour mass 7, insulation tube 5 is fiberglass pipe, the two ends of each insulation tube 5 are passed by the bottom surface of pour mass 7.
The embodiment of the production method of the casting type voltage mutual inductor of the present invention: the method utilizes above-mentioned casting mold to pour into a mould, and step is as follows,
1), holder body: first device body is just being placed on the cross-over block 6 on base plate 1, by bundle component rotating around on the lower frame being contained in a winding 2, and make the two ends of each insulation tube 5 be passed by each self-corresponding two through holes respectively, so two ends of iron wire are passed by below base plate 1, the two ends that each iron wire passes are threaded together, to realize tightening of winding 2 and base plate 1, each through hole is coated with sealant sealing before cast.
2), matched moulds: the interior mould fixing device body is positioned over the moulding by casting intracavity of external mold, the positive placement location of device body to be ensured；
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, being extracted out by each iron wire from corresponding insulation tube 5, insulation tube 5(is except both ends) and cross-over block 6 all stay in pour mass 7, will expose after pour mass 7 insulation tube part cuts, and knock out base plate 1 and i.e. complete the demoulding.
Claims (10)
1. the device body fixed structure of a casting type voltage mutual inductor, it is characterized in that: include the device body of positive placement location and be placed in the base plate below device body, be provided with between device body and base plate for eyelid retractor body and the cross-over block that is reserved in pour mass after device body is poured；Being additionally provided with two ends between device body and base plate and be fastenedly connected the bundle component winding to be bundled with base plate below base plate, bundle component is included in the flexible insulation pipe being reserved in pour mass after device body is poured and is located in bandage in insulation tube, that extract out after device body is poured.
The device body fixed structure of casting type voltage mutual inductor the most according to claim 1, it is characterised in that: described bundle component has two, and two bundle components are rotating around on the lower frame being contained in a winding.
The device body fixed structure of casting type voltage mutual inductor the most according to claim 1 and 2, it is characterised in that: described insulation tube is fiberglass pipe.
4. the casting mold of a casting type voltage mutual inductor, including interior mould, it is characterized in that: described interior mould includes base plate and is placed on base plate upper face, for supporting the cross-over block of the voltage transformer device body of positive placement location, inner membrance also includes that two ends are fastenedly connected with by the bundle component that the one of device body time winding bundles with base plate below base plate, and bundle component is included in the flexible insulation pipe being reserved in pour mass after device body is poured and is located in bandage in insulation tube, that extract out after device body is poured.
The casting mold of casting type voltage mutual inductor the most according to claim 4, it is characterised in that: described bundle component has two, and two bundle components are rotating around on the lower frame being contained in a winding.
6. according to the casting mold of the casting type voltage mutual inductor described in claim 4 or 5, it is characterised in that: described insulation tube is fiberglass pipe.
7. a casting type voltage mutual inductor, it is embedded in interior pour mass including device body and by device body, two binding posts of device body are arranged upward, it is characterized in that: a winding bottom support of described device body is provided with the cross-over block being embedded in pour mass, the bottom surface of cross-over block is concordant with the bottom surface of pour mass, around equipped with being embedded in flexible insulation pipe in pour mass, that supply to wear bandage before device body is poured into a mould on winding, the two ends of insulation tube are passed by the bottom surface of pour mass.
Casting type voltage mutual inductor the most according to claim 7, it is characterised in that: described insulation tube has two, and two insulation tubes are rotating around on the lower frame being contained in a winding.
9. according to the casting type voltage mutual inductor described in claim 7 or 8, it is characterised in that: described insulation tube is fiberglass pipe.
10. the production method of a casting type voltage mutual inductor, it is characterised in that: the method utilizes above-mentioned casting mold to pour into a mould, and step is as follows,
1), holder body: first the cross-over block of interior mould is placed on base plate, then device body is just being put and be placed on cross-over block, finally utilizing bundle component to be bundled with base plate by device body, two bandages, after base plate, are fastenedly connected below base plate by the two ends of bundle component；
2), matched moulds: the interior mould fixing device body is positioned over the moulding by casting intracavity of external mold；
3), cast: to the moulding by casting intracavity injection ring epoxy resins 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 |
|---|---|---|---|
| CN201310361323.9A CN104143422B (en) | 2013-08-19 | 2013-08-19 | Casting type voltage mutual inductor and device body fixed structure, casting mold, production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310361323.9A CN104143422B (en) | 2013-08-19 | 2013-08-19 | Casting type voltage mutual inductor and device body fixed structure, casting mold, production method |
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| CN104143422A CN104143422A (en) | 2014-11-12 |
| CN104143422B true CN104143422B (en) | 2016-11-23 |
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| 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 |
| CN108389707A (en) * | 2018-02-05 | 2018-08-10 | 河南森源电气股份有限公司 | Voltage transformer and its manufacturing method |
| CN108987097B (en) * | 2018-08-09 | 2020-06-02 | 重庆华虹仪表有限公司 | Mutual inductor coil mold-filling pre-adjusting device and method based on APG |
| CN113628864B (en) * | 2021-07-14 | 2023-06-30 | 山东电力设备有限公司 | Fixed support process method and fixed support structure for built-in CT of reactor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202736706U (en) * | 2012-06-08 | 2013-02-13 | 平高集团有限公司 | Casting type voltage transformer |
| 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 |
| CN203019599U (en) * | 2012-11-29 | 2013-06-26 | 浙江新光电气有限公司 | Casting forming die for current transformer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3095341B2 (en) * | 1995-09-14 | 2000-10-03 | 東光電気株式会社 | Manufacturing method of molded current transformer |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202736706U (en) * | 2012-06-08 | 2013-02-13 | 平高集团有限公司 | Casting type voltage transformer |
| 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 |
| CN203019599U (en) * | 2012-11-29 | 2013-06-26 | 浙江新光电气有限公司 | Casting forming die for current transformer |
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| CN104143422A (en) | 2014-11-12 |
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Granted publication date: 20161123 |