CN111696817A - High-voltage switch and shell thereof - Google Patents
High-voltage switch and shell thereof Download PDFInfo
- Publication number
- CN111696817A CN111696817A CN202010219917.6A CN202010219917A CN111696817A CN 111696817 A CN111696817 A CN 111696817A CN 202010219917 A CN202010219917 A CN 202010219917A CN 111696817 A CN111696817 A CN 111696817A
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- CN
- China
- Prior art keywords
- voltage switch
- hole
- sealing ring
- component
- shell
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- 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.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
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- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention relates to a high-voltage switch and a shell thereof, wherein the shell of the high-voltage switch is provided with a through hole for inserting a component; the through hole comprises a conical hole section, and the diameter of one end, into which the plug-in component is inserted, of the conical hole section is larger than that of the other end of the conical hole section; and a sealing matching surface is arranged on the conical hole section and used for matching with a sealing ring on the plug-in component. By designing the conical hole section on the through hole, the insertion of the insertion part is facilitated, and the sealing ring on the insertion part is prevented from being damaged in the insertion process; and when the insertion part is inserted into the through hole, the sealing ring on the insertion part is gradually compressed under the action of the conical hole section, so that the sealing ring is ensured to have larger compression amount, and the sealing performance between the insertion part and the wall of the through hole is ensured.
Description
Technical Field
The invention relates to a high-voltage switch and a shell thereof.
Background
In the prior art, in order to realize the electrical connection between the inside and the outside of the high-voltage switch casing or to provide a monitoring device outside the high-voltage switch casing, a through hole is generally formed in the high-voltage switch casing, and a main circuit, a terminal or a pressure switch and other plug-in components are installed in the through hole. The high-voltage switch shell is generally filled with insulating gas to ensure the insulating property among all devices in the high-voltage switch shell, and has higher requirement on the sealing property, so that in order to prevent the insulating gas from leaking at the through hole and the plug-in component, the high-voltage switch shell capable of ensuring the air tightness of the high-voltage switch needs to be provided to ensure the normal use of the high-voltage switch.
Disclosure of Invention
The invention aims to provide a high-voltage switch shell which can better ensure the sealing property between a through hole and an insertion component; the invention also aims to provide the high-voltage switch which can better ensure the sealing property between the through hole and the plug-in component.
In order to achieve the purpose, the technical scheme of the high-voltage switch shell is as follows:
the high-voltage switch shell is provided with a through hole for the insertion of the insertion component;
the through hole comprises a conical hole section, and the diameter of one end, into which the plug-in component is inserted, of the conical hole section is larger than that of the other end of the conical hole section;
and a sealing matching surface is arranged on the conical hole section and used for matching with a sealing ring on the plug-in component.
The beneficial effects are that: by designing the conical hole section on the through hole, the insertion of the insertion part is facilitated, and the sealing ring on the insertion part is prevented from being damaged in the insertion process; and when the insertion part is inserted into the through hole, the sealing ring on the insertion part is gradually compressed under the action of the conical hole section, so that the sealing ring is ensured to have larger compression amount, and the sealing performance between the insertion part and the wall of the through hole is ensured.
Furthermore, the included angle between the central line of the conical hole section and the generatrix thereof is 4-6 degrees.
The beneficial effects are that: the included angle can better extrude the sealing ring under the condition that the insertion component is not influenced to be inserted into the high-voltage switch shell.
Furthermore, a flanging is integrally formed on the high-voltage switch shell in a bending mode, and the through hole is formed by the flanging.
The beneficial effects are that: the welding seam amount of the high-voltage switch shell is reduced, and the air leakage rate of the high-voltage switch shell is further reduced.
Further, the through hole extends inwards from the wall of the high-voltage switch shell.
The beneficial effects are that: the outward protrusion of the through hole is avoided, so that the high-voltage switch shell is more attractive.
In order to achieve the purpose, the technical scheme of the high-voltage switch is as follows:
the high-voltage switch comprises a high-voltage switch shell, an electric element and an insertion component, wherein the electric element is arranged in the high-voltage switch shell, and the insertion component is arranged on the high-voltage switch shell and is connected with the electric element;
the high-voltage switch shell is provided with a through hole, and the plug-in component is inserted into the through hole;
the through hole comprises a conical hole section, and the diameter of one end, into which the plug-in component is inserted, of the conical hole section is larger than that of the other end of the conical hole section;
and a sealing matching surface is arranged on the conical hole section, and the sealing matching surface is matched with a sealing ring on the plug-in component.
The beneficial effects are that: by designing the conical hole section on the through hole, the insertion of the insertion part is facilitated, and the sealing ring on the insertion part is prevented from being damaged in the insertion process; and when the insertion part is inserted into the through hole, the sealing ring on the insertion part is gradually compressed under the action of the conical hole section, so that the sealing ring is ensured to have larger compression amount, and the sealing performance between the insertion part and the wall of the through hole is ensured.
Furthermore, the included angle between the central line of the conical hole section and the generatrix thereof is 4-6 degrees.
The beneficial effects are that: the included angle can better extrude the sealing ring under the condition that the insertion component is not influenced to be inserted into the high-voltage switch shell.
Furthermore, a sealing ring groove is formed in the plug-in component, and the sealing ring is installed in the sealing ring groove;
the depth of the groove wall of the sealing ring groove close to the internal electric element is smaller than that of the groove wall of the other side of the sealing ring groove.
The beneficial effects are that: not only be convenient for the sealing washer install in the sealed annular, in addition at the in-process in the cartridge part inserts the bell mouth section, the sealed annular is close to the groove edge of inside electrical components's cell wall department can dodge the pore wall of bell mouth, guarantees that the inboard of sealing washer can be by abundant compression, further guarantees sealed effect.
Furthermore, a flanging is integrally formed on the high-voltage switch shell in a bending mode, and the through hole is formed by the flanging.
The beneficial effects are that: the welding seam amount of the high-voltage switch shell is reduced, and the air leakage rate of the high-voltage switch shell is further reduced.
Further, the through hole extends inwards from the wall of the high-voltage switch shell.
The beneficial effects are that: the outward protrusion of the through hole is avoided, so that the high-voltage switch shell is more attractive.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the high voltage switch of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
in the figure: 1-a high-voltage switch housing; 2-a through hole; 3-sealing ring; 4-inserting a component; 5-flanging; 6-a stud; 7-a nut; 8-spacer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
as shown in fig. 1, the high-voltage switch includes a high-voltage switch case 1, an electrical component disposed in the high-voltage switch case 1, and a plug-in component 4, where the high-voltage switch case 1 is provided with a through hole 2. The insertion part 4 in this embodiment is a main circuit part, which is inserted into the through hole 2 and connected with an electrical component to form a main circuit of the high-voltage switch housing 1.
As shown in FIG. 2, a gasket 8 is arranged between the insertion part 4 and the hole edge of the through hole 2 to ensure that the force applied to the hole edge of the through hole 2 is uniform when the insertion part 4 is installed.
In this embodiment, the through hole 2 is a tapered hole, a diameter of one end of the tapered hole, into which the insertion component 4 is inserted, is larger than a diameter of the other end of the tapered hole, and a sealing mating surface for mating with the sealing ring 3 on the insertion component 4 is provided on the tapered hole. The included angle between the center line of the taper hole and the bus thereof is 5 degrees, and the included angle can better extrude the sealing ring under the condition that the insertion component is not influenced to be inserted into the high-voltage switch shell.
In this embodiment, the through hole 2 extends inward from the wall of the high voltage switch housing 1 to prevent the through hole 2 from protruding outward, so that the high voltage switch housing 1 is more beautiful. The through hole 2 is formed by a flange 5, and the flange 5 and the high-voltage switch shell 1 are integrally bent and formed through an oil press. The through hole 2 is formed by the bent flanging, so that the welding seam amount of the high-voltage switch shell 1 is reduced, and the air leakage rate of the high-voltage switch shell 1 is further reduced, so that the sealing performance of the high-voltage switch shell 1 is ensured.
In this embodiment, be equipped with the seal ring groove on the cartridge part 4, sealing washer 3 is installed in the seal ring groove, the cell wall degree of depth that the seal ring groove is close to inside electrical component is less than the cell wall degree of depth of its opposite side, the inboard cell wall degree of depth of seal ring groove is less than its outside cell wall degree of depth promptly, so not only be convenient for sealing washer 3 to install in the seal ring groove, and at the in-process in cartridge part 4 inserts the bell mouth, the groove edge that the cell wall department that the seal ring groove is close to inside electrical component can dodge the pore wall of bell mouth, guarantee that sealing washer 3 can be fully compressed.
In this embodiment, the high-voltage switch case 1 is formed by a hydraulic bulging process. Specifically, a 06Cr19Ni10 stainless steel plate with the thickness of 3mm is firstly coiled into a cylinder, then the coiled cylinder is welded in a straight seam mode, then the end face of the cylinder is trimmed, the surface of the cylinder is coated with oil, and then the cylinder is placed into an expanding machine for hydraulic pressure expanding. And after the bulging is finished, the through hole 2 is cut out by laser, then the through hole 2 is flanged by an oil press, and finally the stud 6 is welded beside the through hole. The high-voltage switch housing 1 formed by the hydraulic bulging process has the following advantages: (1) the shell is formed in one step, so that the sealing performance of a product is effectively guaranteed, and the deformation and errors caused by welding are reduced; (2) when the shell is expanded and formed, the material is subjected to plastic deformation, so that the rigidity and the strength of the shell are enhanced; (3) the electric field in the shell is uniform, and the service performance is ensured.
It should be noted that the number and size of the through holes 2 should be set according to the insertion parts 4 to be inserted on the high-voltage switch housing 1, for example, the through holes may be main circuit through holes, pressure switch through holes, terminal through holes, and the like.
When the insertion component 4 is inserted into the through hole 2, the gasket 8 is firstly sleeved on the insertion component 4, then the insertion component 4 is aligned with the through hole 2, then the insertion component 4 is moved from outside to inside along the radial direction of the high-voltage switch shell 1, and finally the insertion component 4 is fixed on the high-voltage switch shell 1 through the threaded matching of the nut 7 and the stud 8. The aperture of the through hole 2 is gradually reduced from outside to inside along the radial direction of the high-voltage switch shell 1, so that the insertion of the insertion component 4 is facilitated, and the sealing ring 3 on the insertion component 4 is prevented from being damaged in the insertion process; and when the insertion part 4 is inserted into the through hole 2, the sealing ring 3 on the insertion part 4 is gradually compressed under the action of the taper hole, so that the sealing ring 3 is ensured to have larger compression amount, and the sealing performance between the insertion part 4 and the hole wall of the through hole 2 is ensured. Wherein, the through hole 2 and the hole wall matched with the sealing ring on the plug-in component 4 form a sealing matching surface.
the difference from embodiment 1 is that in embodiment 1, the through hole 2 is formed by a flange 5 formed by bending integrally with the high-voltage switch housing 1, and in this embodiment, the through hole is formed by a sleeve welded to the high-voltage switch housing.
the difference from embodiment 1 is that, in embodiment 1, the through hole 2 is a tapered hole as a whole, and in this embodiment, the through hole includes a tapered hole section and a straight hole section, and the tapered hole section is provided with a sealing mating surface, and the length of the straight hole section can be set according to the mating position of the sealing mating surface and the sealing ring on the insertion component. Wherein, the plug-in components are firstly inserted into the straight hole section and then are in sealing fit with the conical hole section.
Specific embodiment 4 of the high voltage switch of the present invention:
the difference from the embodiment 1 is that in the embodiment 1, the sealing ring 3 is installed in the sealing ring groove, the depth of the inner groove wall of the sealing ring groove is smaller than that of the outer groove wall, in this embodiment, the sealing ring is installed in the sealing ring groove, and the depth of the inner groove wall of the sealing ring groove is equal to that of the outer groove wall.
the difference from embodiment 1 is that in embodiment 1, the through hole 2 extends inward from the wall of the high-voltage switch housing 1, and in this embodiment, the through hole extends outward from the wall of the high-voltage switch housing.
the difference from the embodiment 1 is that in the embodiment 1, the insertion component is a main circuit component, in the embodiment, the insertion component is a pressure alarm switch, the pressure alarm switch is inserted into a through hole of a high-voltage switch shell, and the pressure alarm switch and the through hole are sealed through a sealing ring.
In the specific embodiment of the high-voltage switch housing of the present invention, the structure of the high-voltage switch housing in this embodiment is the same as that of any one of the high-voltage switch housings described in the above specific embodiments 1 to 6 of the high-voltage switch, and details are not repeated here.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (9)
1. The high-voltage switch shell is provided with a through hole for the insertion of the insertion component;
it is characterized in that the preparation method is characterized in that,
the through hole comprises a conical hole section, and the diameter of one end, into which the plug-in component is inserted, of the conical hole section is larger than that of the other end of the conical hole section;
and a sealing matching surface is arranged on the conical hole section and used for matching with a sealing ring on the plug-in component.
2. The high voltage switch housing of claim 1, wherein a centerline of said tapered bore section is at an angle in the range of 4 ° to 6 ° to a generatrix thereof.
3. The high-voltage switch shell according to claim 1 or 2, wherein a flange is integrally formed on the high-voltage switch shell in a bending mode, and the through hole is formed by the flange.
4. The high voltage switch housing according to claim 1 or 2, wherein the through hole extends inwardly from a wall of the high voltage switch housing.
5. The high-voltage switch comprises a high-voltage switch shell, an electric element and an insertion component, wherein the electric element is arranged in the high-voltage switch shell, and the insertion component is arranged on the high-voltage switch shell and is connected with the electric element;
it is characterized in that the preparation method is characterized in that,
the high-voltage switch shell is provided with a through hole, and the plug-in component is inserted into the through hole;
the through hole comprises a conical hole section, and the diameter of one end, into which the plug-in component is inserted, of the conical hole section is larger than that of the other end of the conical hole section;
and a sealing matching surface is arranged on the conical hole section, and the sealing matching surface is matched with a sealing ring on the plug-in component.
6. The high voltage switch of claim 5, wherein the centerline of the tapered bore section is at an angle in the range of 4 ° to 6 ° to its generatrix.
7. The high-voltage switch according to claim 5, wherein the insertion member is provided with a sealing ring groove, and the sealing ring is mounted in the sealing ring groove;
the depth of the groove wall of the sealing ring groove close to the internal electric element is smaller than that of the groove wall of the other side of the sealing ring groove.
8. The high-voltage switch according to claim 5, 6 or 7, wherein a flange is integrally formed on the high-voltage switch housing in a bending manner, and the through hole is formed by the flange.
9. The high voltage switch according to claim 5, 6 or 7, wherein the through hole extends inwardly from a wall of the high voltage switch housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219917.6A CN111696817A (en) | 2020-03-25 | 2020-03-25 | High-voltage switch and shell thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010219917.6A CN111696817A (en) | 2020-03-25 | 2020-03-25 | High-voltage switch and shell thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111696817A true CN111696817A (en) | 2020-09-22 |
Family
ID=72476284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010219917.6A Pending CN111696817A (en) | 2020-03-25 | 2020-03-25 | High-voltage switch and shell thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111696817A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063965A (en) * | 1989-11-29 | 1992-08-26 | Gec阿尔斯托姆公司 | The primary cut-out of band piezo-resistance |
| JPH05151869A (en) * | 1991-11-29 | 1993-06-18 | Ekutasu Eng:Yugen | High pressure load-break switch |
| CN1142118A (en) * | 1995-05-26 | 1997-02-05 | Abb管理有限公司 | Cut-off device for metal-enclosed and gas-insulated high-voltage switch device |
| CN1206215A (en) * | 1997-07-23 | 1999-01-27 | 株式会社日立制作所 | Vacuum switch and vacuum switch apparatus using the same |
| CN1396613A (en) * | 2001-07-06 | 2003-02-12 | 阿尔斯托姆公司 | Compression circuit breaker electrode capable of mounting and dismounting and without notable air consumption |
| CN101276702A (en) * | 2008-04-29 | 2008-10-01 | 王世有 | Hexafluoride sulphur circuit breaker with heating protecting equipment |
| CN203205323U (en) * | 2011-09-05 | 2013-09-18 | 阿尔斯通电网有限公司 | Electrical switchgear |
| CN105428147A (en) * | 2015-12-18 | 2016-03-23 | 北京双杰电气股份有限公司 | Circuit breaking apparatus |
| CN207302964U (en) * | 2017-09-26 | 2018-05-01 | 湖北网安科技有限公司 | A kind of hermetically sealed high-pressure vacuum breaker of outdoor environmental protection compact |
| CN208938875U (en) * | 2018-11-26 | 2019-06-04 | 湖北网安科技有限公司 | A kind of hermetically sealed breaker of sulfur hexafluoride gas-insulating |
-
2020
- 2020-03-25 CN CN202010219917.6A patent/CN111696817A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063965A (en) * | 1989-11-29 | 1992-08-26 | Gec阿尔斯托姆公司 | The primary cut-out of band piezo-resistance |
| JPH05151869A (en) * | 1991-11-29 | 1993-06-18 | Ekutasu Eng:Yugen | High pressure load-break switch |
| CN1142118A (en) * | 1995-05-26 | 1997-02-05 | Abb管理有限公司 | Cut-off device for metal-enclosed and gas-insulated high-voltage switch device |
| CN1206215A (en) * | 1997-07-23 | 1999-01-27 | 株式会社日立制作所 | Vacuum switch and vacuum switch apparatus using the same |
| CN1396613A (en) * | 2001-07-06 | 2003-02-12 | 阿尔斯托姆公司 | Compression circuit breaker electrode capable of mounting and dismounting and without notable air consumption |
| CN101276702A (en) * | 2008-04-29 | 2008-10-01 | 王世有 | Hexafluoride sulphur circuit breaker with heating protecting equipment |
| CN203205323U (en) * | 2011-09-05 | 2013-09-18 | 阿尔斯通电网有限公司 | Electrical switchgear |
| CN105428147A (en) * | 2015-12-18 | 2016-03-23 | 北京双杰电气股份有限公司 | Circuit breaking apparatus |
| CN207302964U (en) * | 2017-09-26 | 2018-05-01 | 湖北网安科技有限公司 | A kind of hermetically sealed high-pressure vacuum breaker of outdoor environmental protection compact |
| CN208938875U (en) * | 2018-11-26 | 2019-06-04 | 湖北网安科技有限公司 | A kind of hermetically sealed breaker of sulfur hexafluoride gas-insulating |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200922 |
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| RJ01 | Rejection of invention patent application after publication |