CN114334310A - Casing and method for manufacturing the same - Google Patents
Casing and method for manufacturing the same Download PDFInfo
- Publication number
- CN114334310A CN114334310A CN202111651002.3A CN202111651002A CN114334310A CN 114334310 A CN114334310 A CN 114334310A CN 202111651002 A CN202111651002 A CN 202111651002A CN 114334310 A CN114334310 A CN 114334310A
- Authority
- CN
- China
- Prior art keywords
- capacitor core
- casing
- oil
- temperature
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention discloses a casing shell, which comprises a pressure-equalizing ball, a capacitor core, a casing shell shed, a metal flange, an oil conservator and a wiring board, wherein the capacitor core is cylindrical, a central conductive rod is arranged in the capacitor core, an insulating layer is wrapped outside the central conductive rod, an upper insulating layer and a lower insulating layer are arranged outside the capacitor core, the upper insulating layer is connected with the casing shell shed through resin, the metal flange is arranged in the middle of the capacitor core, a shell connecting piece is arranged on the left side surface of the metal flange, the oil conservator is arranged above the casing shell shed, the oil conservator is provided with an oil inlet, the wiring board is arranged on the left side end surface of the oil conservator, a metal piece is arranged on the right side of the metal flange, and the pressure-equalizing ball is arranged on the right side end surface of the metal piece, the surface defects of the casing are reduced, and the strength of the casing is improved.
Description
Technical Field
The invention relates to the field of manufacturing of a sleeve shell, in particular to a sleeve shell capable of meeting various functional requirements and a manufacturing method thereof.
Background
Bushings are an insulating device that introduces a live conductor into an electrical apparatus or through a wall. The former is called an appliance bushing and the latter is called a wall bushing. The bushing structure is generally composed of three parts, a conductor (guide rod), an insulator and a metal flange. The conductor passes along the axis of the cylindrical insulator, and a metal annular flange is mounted outside the insulator for grounding. The sleeve belongs to an insulating structure with a strong vertical electric field component, the electric field intensity at the metal flange is very high, and corona discharge and sliding flash discharge along the surface of a medium are easily generated. The electric field strength in the radial direction between the flange and the guide rod is also high, and the breakdown of an insulating medium is easy to occur. The casing pipe of 35kV or below is made of single solid insulating material, and is usually made of various insulating materials or electric field uniformity measures, so that the axial and tangential electric field distribution tends to be uniform, along with the rapid development of economy in China, the casing pipe is more and more applied, the existing domestic casing pipe has poor anti-seismic and anti-explosion performance, if the internal defects or improper maintenance of the casing pipe cannot be found in time, insulation damage or even breakdown explosion accidents are easy to happen, the service life is short, and the replacement and maintenance period is short.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a casing shell to meet the requirement of the market on the casing shell, and the invention also aims to provide a manufacturing method of the casing shell.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a casing shell, includes equalizer ball, electric capacity core, sleeve pipe shell full skirt, metal flange, conservator, wiring board, the electric capacity core is cylindrical, the inside central conducting rod that is provided with of electric capacity core, the outside parcel of central conducting rod has the insulating layer, the insulating layer is 1 mm's glass fiber layer for thickness, the electric capacity core outside is equipped with insulating layer, lower insulating layer, go up the insulating layer and pass through resin connection sleeve pipe shell full skirt, the metal flange sets up at electric capacity core middle part, and the metal flange left surface is equipped with the casing connecting piece, the conservator sets up in sleeve pipe shell full skirt top, be equipped with the oil inlet on the conservator, the wiring board sets up on conservator left side terminal surface, the metal flange right side is provided with the metalwork, the equalizer ball sets up on metalwork right side terminal surface.
As an optimized technical scheme, an oil level indicator is arranged on the oil conservator.
As an optimized technical scheme, the inclined angle of the umbrella skirt of the casing of the sleeve is 30-45 degrees.
As an optimized technical scheme, oil in the oil conservator is high-brightness yellow diesel oil.
As an optimized technical scheme, the oil inlet is a sealed triangular oil inlet which can be closed at any time.
As an optimized technical scheme, the metal sealing ring is an annular rubber sealing ring made of corrosion-resistant rubber.
The preparation method of the casing comprises the following steps:
(1) winding the capacitor core;
(2) vacuum drying the capacitor core;
(3) manufacturing a casing main body of the casing;
(4) manufacturing an umbrella skirt of the casing of the sleeve;
(5) assembling the sleeve part;
(6) performing a sleeve sealing test;
(7) oil immersion in vacuum;
the method for preparing the casing of the sleeve comprises the steps that in the step (1), insulating paper and aluminum foils are connected in series by taking a central conducting rod as a concentric cylinder, a paper tape with the thickness of 0.04-0.16mm is used for winding 2-10 layers according to a circulating 50% compression joint mode, then a layer of resin is brushed, the coated resin is unsaturated polyester resin, the resin needs to be subjected to heat preservation operation when being brushed, the resin is prevented from being solidified due to temperature reduction, then a layer of 0.1-0.15mm aluminum foil is covered for circulating lap joint, and the alternating operation is repeated until the winding reaches the specified design size, namely the winding is completed.
The preparation method of the casing comprises the following steps of (2) putting the capacitor core to be dried into a container capable of being vacuumized, vacuumizing the container at the vacuum degree of 0-40Pa to keep the product in a certain vacuum state, heating the temperature in the vacuum container to 90-100 ℃, and preserving the temperature for 1-3 hours.
The manufacturing method of the casing comprises the steps of (3) firstly stacking the glass fiber base materials impregnated with the thermoplastic resin into a laminated structure, then covering the surface of the glass fiber base materials with the thermoplastic film, putting the thermoplastic film into a hot-pressing mold, heating the hot-pressing mold to the melting temperature of the thermoplastic resin or the thermoplastic film, combining the mold to form a product, cooling the hot-pressing mold after forming, opening the mold and taking out the product.
The preparation method of the casing comprises the steps of (4) manufacturing the umbrella skirt of the casing shell by directly impregnating resin into glass fibers to carry out bidirectional cross winding until the glass fibers are wound to a specified size, wherein the cross angle of the glass fibers is 90 degrees, and then putting the glass fibers into a 120-140 ℃ oven to be cured to form the casing shell, wherein a steel mould is arranged in a glass fiber insulating layer for demoulding to form a sheath with a certain wall thickness; the umbrella skirt is vulcanized and molded by a silicon rubber high-temperature vulcanizing machine, the vulcanizing temperature is 110-.
The method for manufacturing the casing comprises the steps that in the step (5), the capacitor core is vertically fixed in the general assembly of the casing part, the lower end of the casing part is sleeved with the casing shell main body, the upper end of the casing shell main body is sleeved with the casing shell umbrella skirt, the metal flange and the capacitor core are sealed through the sealing washer, the casing part is fixed through bolts, a metal part is installed below the capacitor core, a pressure equalizing ball is installed at the lower end of the metal part, an oil conservator, an oil level indicator and a wiring board are installed at the upper end of the casing shell main body, and the bolts are locked and fixed by applying 0.5-0.8 ton of pressure.
In the preparation method of the casing, the casing sealing test in the step (6) is to apply nitrogen pressure of 0.2-0.3Mpa in the sample and maintain the pressure for 1-1.5h, and each sealing surface of the sample has no leakage phenomenon, namely the test passes.
In the preparation method of the casing, the vacuum oil immersion in the step (7) is to place the product obtained in the step (6) into a vacuum container, firstly, the container is vacuumized, the vacuum degree is 1333-3999.6Pa, so that the product is in a certain vacuum state, and then, oil with the temperature of 40-80 ℃ is injected into a capacitor core.
As an optimized technical scheme, the material of the thermoplastic film in the step 3 is PC, PMMA, PA, ABS or PC/ABS, and the thickness of the thermoplastic film in the step 3 is 0.1-2 mm.
As an optimized technical solution, the step 3 includes the step of heating the hot pressing mold to the glass transition temperature of the thermoplastic resin or the thermoplastic film, and then continuously raising the temperature to the melting temperature of the thermoplastic resin or the thermoplastic film.
As an optimized technical scheme, the heating temperature of the hot pressing mold in the step 3 is 70-200 ℃, and the temperature of the hot pressing mold is lower than 60 ℃ after the temperature of the hot pressing mold is reduced.
Compared with the prior art, the invention has the beneficial effects that: contain the thermoplastic resin through glass fiber, then heat the shaping product in the heated press die with the multilayer stack mode, this sleeve pipe shell manufacturing approach covers the thermoplastic film at the outer layer of glass fiber substrate, can effectively reduce the gas pocket and the crackle on sleeve pipe surface, the surface defect of sleeve pipe casing has been reduced, and the intensity of sleeve pipe casing has been improved, the insulating layer adopts glass fiber impregnated resin two-way alternately winding to form simultaneously, original breakable insulator has been replaced, good antidetonation and explosion-proof function have, the insulating layer is as external insulation simultaneously, can protect the electric capacity core, there is light in weight, easy transportation and installation, mechanical strength is high, be difficult to the breakage, advantages such as manufacturing process is simple.
Drawings
FIG. 1 is a schematic diagram of the present invention.
FIG. 2 is a schematic diagram of a capacitor core structure according to the present invention.
Fig. 3 is a graph of the moisture content of the insulation paper of the present invention at different humidities.
FIG. 4 is a plot of recommended reference values for casing oil performance in accordance with the present invention.
FIG. 5 is a plot of actual control values for casing oil performance in accordance with the present invention.
Fig. 6 is a flow chart of the manufacturing process of the casing main body of the present invention.
Fig. 7 is a sectional view of a casing of a product completed by the manufacturing method of the casing main body of the present invention.
In the figure: the oil level indicator is characterized in that the oil level indicator is 1, the oil level indicator is 2, the sleeve shell shed is 3, the shell connecting piece is 4, the metal flange is 5, the capacitor core is 6, the metal piece is 7, the pressure equalizing ball is 8, the oil sealing ring is 9, the sleeve shell body is 10, the oil inlet is 11, the oil conservator is 12, the central conducting rod is 13, the upper insulating layer is 14, the lower insulating layer is 15, the thermoplastic film is 16, the glass fiber substrate is 17, and the insulating layer is 18.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, as the term is used in the generic and descriptive sense, and not for purposes of limitation, unless otherwise specified or implied, and the specific reference to a device or element is intended to be a reference to a particular element, structure, or component.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the present invention provides a casing, which comprises a voltage-sharing ball 8, a capacitor core 6, a casing shell shed 3, a metal flange 5, an oil conservator 12 and a wiring board 1, wherein the capacitor core 6 is cylindrical, a central conductive rod 13 is arranged inside the capacitor core 6, an insulating layer 18 is wrapped on the outer side of the central conductive rod 13, the insulating layer 18 is a glass fiber layer with a thickness of 1mm, an upper insulating layer 14 and a lower insulating layer 15 are arranged on the outer side of the capacitor core, the upper insulating layer 14 is connected with the casing shell shed 3 through resin, the metal flange 5 is arranged in the middle of the capacitor core 6, a casing connecting piece 4 is arranged on the left side surface of the metal flange 5, the oil conservator 12 is arranged above the casing shell shed 3, an oil inlet 11 is arranged on the oil conservator 12, the wiring board 1 is arranged on the left side end surface of the oil conservator 12, a metal piece 7 is arranged on the right side of the metal flange 5, the pressure equalizing ball 8 is arranged on the end face of the right side of the metal piece 7.
As an optimized technical scheme, the oil level indicator 2 is arranged on the oil conservator 12, the inclination angle of the umbrella skirt 3 of the casing shell is 30-45 degrees, oil in the oil conservator 12 is high-brightness yellow diesel oil, the oil level indicator 12 is arranged, the residual content of the oil can be observed under the condition that the casing shell main body 10 is not detached, a worker can conveniently control the residual condition of the oil in real time, the selected oil level indicator 12 is a hydraulic column indicator, corresponding liquid column change can be carried out according to the residual condition of the oil, and the oil level indicator is visual and sensitive.
As an optimized technical scheme, the oil inlet 11 is a sealed triangular oil inlet which can be closed at any time, the oil seal ring 9 is an annular rubber seal ring made of corrosion-resistant rubber, the oil inlet 11 is set to be a triangular oil inlet which can be opened and closed at any time, so that timely supplement of oil inside the oil conservator 12 can be guaranteed when oil in the sleeved oil conservator 12 is lost, meanwhile, the corrosion-resistant oil seal ring 9 is arranged at the oil inlet 11, the sealing performance of the oil conservator 12 is guaranteed to a certain extent, and the situation that the oil is accidentally leaked due to the fact that a sealing opening is not tight in sealing is greatly reduced.
Example 1
The embodiment provides a manufacturing method of a casing shell, which comprises the following steps:
(1) rolling the capacitor core 6;
(2) drying the capacitor core 6 in vacuum;
(3) manufacturing a casing shell main body 10;
(4) manufacturing a shed 3 of the casing of the sleeve;
(5) assembling the sleeve part;
(6) performing a sleeve sealing test;
(7) oil immersion in vacuum;
the method for preparing the casing of the sleeve comprises the steps that in the step (1), the capacitor core 6 is coiled by insulating paper and aluminum foil in a concentric cylinder mode by taking the central conducting rod 13 as a concentric cylinder to form a series capacitor, the thickness of the insulating paper is 0.04-0.16mm, 2-10 layers of paper tapes are coiled in a circulating 50% compression joint mode, then a layer of resin is brushed, the smeared resin is unsaturated polyester resin, the resin needs to be subjected to heat preservation operation when being brushed, the resin is prevented from being solidified due to temperature reduction, then a layer of 0.1-0.15mm aluminum foil is covered for circulating overlapping, and the alternating operation is repeated until the coil is coiled to the specified design size, namely the coil is completed.
In the method for preparing the casing, the capacitor core 6 to be dried in the step (2) is vacuum-dried, namely the capacitor core 6 to be dried is put into a container which can be vacuumized, the container is vacuumized at a vacuum degree of 0-40Pa to keep the product in a certain vacuum state, and then the temperature in the vacuum container is heated to 90-100 ℃ and is kept for 1-3 hours.
In the manufacturing method of the casing, the casing shell body 10 in the step (3) is manufactured by firstly stacking the glass fiber base material impregnated with the thermoplastic resin into a layered structure, then covering the surface of the glass fiber base material with the thermoplastic film, placing the thermoplastic film into a hot-pressing mold, heating the hot-pressing mold to the melting temperature of the thermoplastic resin or the thermoplastic film, combining the mold to form a product, cooling the hot-pressing mold after forming, opening the mold, and taking out the product.
The preparation method of the casing comprises the steps that in the step (4), the umbrella skirt 3 of the casing shell is manufactured by directly impregnating glass fiber with resin to perform bidirectional cross winding until the glass fiber is wound to a specified size, the cross angle of the glass fiber is 90 degrees, and then the glass fiber is placed into a 120-140 ℃ oven to be cured to form the casing shell, and a steel mould is arranged in a glass fiber insulating layer to perform demoulding so as to form a sheath with a certain wall thickness; the umbrella skirt is vulcanized and molded by a silicon rubber high-temperature vulcanizing machine, the vulcanizing temperature is 110-.
The method for manufacturing the casing comprises the steps that in the step (5), the capacitor core is vertically fixed in the general assembly of the casing part, the lower end of the casing part is sleeved with the casing shell main body, the upper end of the casing shell main body is sleeved with the casing shell umbrella skirt, the metal flange and the capacitor core are sealed through the sealing washer, the casing part is fixed through bolts, a metal part is installed below the capacitor core, a pressure equalizing ball is installed at the lower end of the metal part, an oil conservator, an oil level indicator and a wiring board are installed at the upper end of the casing shell main body, and the bolts are locked and fixed by applying 0.5-0.8 ton of pressure.
In the preparation method of the casing, the casing sealing test in the step (6) is to apply nitrogen pressure of 0.2-0.3Mpa in the sample and maintain the pressure for 1-1.5h, and each sealing surface of the sample has no leakage phenomenon, namely the test passes.
In the preparation method of the casing, the vacuum oil immersion in the step (7) is to place the product obtained in the step (6) into a vacuum container, firstly, the container is vacuumized, the vacuum degree is 1333-3999.6Pa, so that the product is in a certain vacuum state, and then, oil with the temperature of 40-80 ℃ is injected into a capacitor core.
In this embodiment, the thermoplastic film in step 3 is made of PC, PMMA, PA, ABS or PC/ABS, that is, Polycarbonate (Polycarbonate) film, polymethyl methacrylate (polymethyl methacrylate) film, polyamide (polyamide) film, acrylonitrile (a), butadiene (B), styrene (S) terpolymer film or engineering plastic alloy film, and the thickness of the thermoplastic film in step 3 is 0.1 to 2 mm. The step 3 includes the step of heating the hot press mold to the glass transition temperature of the thermoplastic resin or the thermoplastic film, and then continuously raising the temperature to the melting temperature of the thermoplastic resin or the thermoplastic film. The heating temperature of the hot pressing die in the step 3 is 70-200 ℃, and the temperature of the hot pressing die after cooling is lower than 60 ℃.
In this example, the casing was tested for performance: the test method and the main equipment requirements are as follows:
1. using an instrument: 2500v insulation resistance measuring instrument
2. Measurement requirements: the insulation of the main insulation; insulation of capacitive bushing
Atmospheric conditions:
the temperature is 26 DEG C
Relative humidity: 65 percent of
Product rated parameter
Rated voltage kV (effective value) of the system: 126
System nominal voltage kV (effective value): 110
Rated current A of the product: 1250
Second, insulation withstand test
Third, insulation resistance test
Fourthly, dielectric loss factor testing and capacitance testing:
applied voltage kV: 1077126
Dielectric loss tan δ%: 0.3300.3300.330
Capacitance pF: 542542542
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a casing, includes that equalizer ball, electric capacity core, sleeve pipe shell full skirt, metal flange, conservator, wiring board, its characterized in that: the capacitor core is cylindrical, the inside conducting rod that is provided with of capacitor core, the outside parcel of conducting rod in central authorities has the insulating layer, the insulating layer is 1 mm's glass fiber layer for thickness, the capacitor core outside is equipped with insulating layer, lower insulating layer, go up the insulating layer and pass through resin connection pipe shell full skirt, the metal flange sets up at the capacitor core middle part, and the metal flange left surface is equipped with the casing connecting piece, the conservator sets up in the pipe shell full skirt top, be equipped with the oil inlet on the conservator, the wiring board sets up on conservator left side terminal surface, the metal flange right side is provided with the metalwork, the equalizer ball sets up on the metalwork right side terminal surface.
2. A cannula housing according to claim 1, wherein: and an oil level indicator is arranged on the oil conservator.
3. A cannula housing according to claim 1, wherein: the angle of inclination of the umbrella skirt of the casing of the sleeve is 30-45 degrees.
4. A cannula housing according to claim 1, wherein: the oil in the oil conservator is diesel oil mixed with high brightness and yellow color.
5. A cannula housing according to claim 1, wherein: the oil inlet is a sealed triangular oil inlet which can be closed at any time.
6. A cannula housing according to claim 1, wherein: the metal sealing ring is an annular rubber sealing ring made of corrosion-resistant rubber.
7. The cannula housing of any of claims 1 to 6, wherein: the method comprises the following steps: step 1: and (3) winding the capacitor core: the capacitor core is coiled by insulating paper and aluminum foil which are connected in series by taking a central conducting rod as a concentric cylinder, the insulating paper is a paper tape with the thickness of 0.04-0.16mm, 2-10 layers of the capacitor core are coiled in a circulating 50% compression joint mode, then a layer of resin is brushed, the smeared resin is unsaturated polyester resin, the resin needs to be subjected to heat preservation operation when being brushed, the resin is prevented from being solidified due to temperature reduction, then a layer of 0.1-0.15mm aluminum foil is covered for circulating lap joint, and the alternating operation is repeated until the coiling reaches the specified design size, namely the coiling is completed.
Step 2: and (3) vacuum drying of the capacitor core: putting the capacitor core to be dried into a container capable of being vacuumized, firstly vacuumizing the container to a vacuum degree of 0-40Pa to ensure that the product is in a certain vacuum state, then heating the temperature in the vacuum container to 90-100 ℃, and preserving the temperature for 1-3 h.
And step 3: manufacturing a casing main body of the casing: firstly, stacking glass fiber base materials impregnated with thermoplastic resin into a layered structure, then covering the surface of the glass fiber base materials with a thermoplastic film, putting the glass fiber base materials into a hot pressing mold, heating the hot pressing mold to the melting temperature of the thermoplastic resin or the thermoplastic film, combining the thermoplastic resin or the thermoplastic film to form a product, cooling the hot pressing mold after forming, opening the mold and taking out the product.
And 4, step 4: manufacturing the umbrella skirt of the casing of the sleeve: directly impregnating resin into glass fiber to carry out bidirectional cross winding until the glass fiber is wound to a specified size, wherein the cross angle of the glass fiber is 90 degrees, then putting the glass fiber into an oven at the temperature of 120-; the umbrella skirt is vulcanized and molded by a silicon rubber high-temperature vulcanizing machine, the vulcanizing temperature is 110-.
And 5: assembling sleeve parts: the method comprises the steps of vertically fixing a capacitor core, sleeving a sleeve shell main body at the lower end of the capacitor core, sleeving a sleeve shell umbrella skirt at the upper end of the capacitor core, sealing a metal flange and the capacitor core through a sealing washer, fixing the capacitor core through bolts, installing a metal piece below the capacitor core, installing a pressure equalizing ball at the lower end of the metal piece, installing an oil conservator, an oil level indicator and a wiring board at the upper end of the sleeve shell main body, and applying pressure of 0.5-0.8 ton to lock the bolts for fixing.
Step 6: and (3) casing sealing test: and (3) applying nitrogen pressure of 0.2-0.3Mpa in the test sample, and maintaining for 1-1.5h, wherein each sealing surface of the test sample has no leakage phenomenon, namely the test passes.
And 7: oil immersion in vacuum: putting the product obtained in the step 6 into a vacuum-pumping container, firstly, vacuumizing the container to a vacuum degree of 1333-3999.6Pa to ensure that the product is in a certain vacuum state, and then injecting oil with the temperature of 40-80 ℃ into a capacitor core.
8. A method of manufacturing a cannula housing according to claim 7, characterized in that: the thermoplastic film in the step 3 is made of PC, PMMA, PA, ABS or PC/ABS, and the thickness of the thermoplastic film is 0.1-2 mm.
9. A method of manufacturing a cannula housing according to claim 7, characterized in that: the step 3 includes the step of heating the hot press mold to the glass transition temperature of the thermoplastic resin or the thermoplastic film, and then continuously raising the temperature to the melting temperature of the thermoplastic resin or the thermoplastic film.
10. A method of manufacturing a cannula housing according to claim 7, characterized in that: the heating temperature of the hot pressing die in the step 3 is 70-200 ℃, and the temperature of the hot pressing die after cooling is lower than 60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111651002.3A CN114334310A (en) | 2021-12-30 | 2021-12-30 | Casing and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111651002.3A CN114334310A (en) | 2021-12-30 | 2021-12-30 | Casing and method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114334310A true CN114334310A (en) | 2022-04-12 |
Family
ID=81018659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111651002.3A Pending CN114334310A (en) | 2021-12-30 | 2021-12-30 | Casing and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114334310A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116110666A (en) * | 2023-04-10 | 2023-05-12 | 山东辰祥电气设备有限公司 | High-voltage sleeve with high insulation strength and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469957A (en) * | 2015-12-28 | 2016-04-06 | 南京电气高压套管有限公司 | Vacuum resin impregnated fiber explosion-proof oil paper condenser-type bushing |
| CN205319004U (en) * | 2015-12-28 | 2016-06-15 | 南京电气高压套管有限公司 | Vacuum rubber soaks fibre explosion -proof type oil paper capacitance graded bushing |
| WO2017025037A1 (en) * | 2015-08-11 | 2017-02-16 | 江苏神马电力股份有限公司 | Insulation sleeve and insulation pipe |
| CN106531418A (en) * | 2016-12-26 | 2017-03-22 | 山东彼岸电力科技有限公司 | Composite insulation oil immersion capacitive transformer bushing |
-
2021
- 2021-12-30 CN CN202111651002.3A patent/CN114334310A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017025037A1 (en) * | 2015-08-11 | 2017-02-16 | 江苏神马电力股份有限公司 | Insulation sleeve and insulation pipe |
| CN105469957A (en) * | 2015-12-28 | 2016-04-06 | 南京电气高压套管有限公司 | Vacuum resin impregnated fiber explosion-proof oil paper condenser-type bushing |
| CN205319004U (en) * | 2015-12-28 | 2016-06-15 | 南京电气高压套管有限公司 | Vacuum rubber soaks fibre explosion -proof type oil paper capacitance graded bushing |
| CN106531418A (en) * | 2016-12-26 | 2017-03-22 | 山东彼岸电力科技有限公司 | Composite insulation oil immersion capacitive transformer bushing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116110666A (en) * | 2023-04-10 | 2023-05-12 | 山东辰祥电气设备有限公司 | High-voltage sleeve with high insulation strength and manufacturing method thereof |
| CN116110666B (en) * | 2023-04-10 | 2023-06-20 | 山东辰祥电气设备有限公司 | High-voltage sleeve with high insulation strength and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105469957B (en) | Vacuum glue soaks fiber explosion-proof type Oil-impregnated Paper Condenser Bushing in History | |
| US8402636B2 (en) | Method of manufacturing ground-burial type solid insulated transformer | |
| WO2017025037A1 (en) | Insulation sleeve and insulation pipe | |
| CN105161230B (en) | Synthetic fibers strengthen resin high-pressure sleeve pipe | |
| US3513253A (en) | Cast condenser bushing having tubular metal coated mesh plates | |
| WO2017025036A1 (en) | Insulation pipe and insulation sleeve with such insulation pipe | |
| CN2591820Y (en) | Dry type high voltage sleeves | |
| CN114334310A (en) | Casing and method for manufacturing the same | |
| US6445269B1 (en) | Dry-type high-voltage winding | |
| CN1207733C (en) | Composite high-voltage casing and its production process | |
| CN204991304U (en) | Synthetic fiber reinforced resins high -tension bushing | |
| CN106405269A (en) | Dry-type air-core reactor low temperature performance detection method and system | |
| CN103475174B (en) | The manufacture craft of coil of stator of motor is manufactured by vacuum pressure impregnation | |
| CN108538578A (en) | A kind of capacitance and its preparation process based on nanometer evaporation metal thin film technique | |
| CN205319004U (en) | Vacuum rubber soaks fibre explosion -proof type oil paper capacitance graded bushing | |
| CN209015865U (en) | A kind of dry sleeve | |
| CN114203370B (en) | Low-temperature superconductive AC/DC sleeve and manufacturing method thereof | |
| CN103350553B (en) | Single-side reinforcing mica tape | |
| CN112002463B (en) | High-voltage AC/DC wall bushing of more than 35kV and preparation method thereof | |
| CN113593794A (en) | Automatic pressure gel pure dry type capacitance type high-voltage insulation sleeve and manufacturing method thereof | |
| CN112002504A (en) | Development method of epoxy resin impregnated glass fiber direct current sleeve | |
| CN103762071A (en) | Foil type capacitive coil sintering process | |
| CN204516560U (en) | Transformer | |
| CN107453516A (en) | The manufacture of wind-driven generator SMC insulated end covers | |
| CN109817369B (en) | Photoelectric composite self-adhesive enameled wire and preparation process thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |