CN113437712B - Modular multi-cable via hole insulating sealing structure based on pressure compensation - Google Patents
Modular multi-cable via hole insulating sealing structure based on pressure compensation Download PDFInfo
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- CN113437712B CN113437712B CN202110898060.XA CN202110898060A CN113437712B CN 113437712 B CN113437712 B CN 113437712B CN 202110898060 A CN202110898060 A CN 202110898060A CN 113437712 B CN113437712 B CN 113437712B
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- pressure
- voltage switching
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- decompression module
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Gasket Seals (AREA)
Abstract
A modular multi-cable via insulating seal structure based on pressure compensation, comprising: the high-voltage switching section comprises a high-voltage switching support and a high-voltage switching base body which is arranged in the high-voltage switching support and provided with high-voltage switching conductor columns; the low pressure changeover portion includes: a low voltage switching base with a low voltage switching conductor post; the pressure reduction module includes: the high-voltage switching support, the high-voltage switching base body and the decompression module base body form a high-voltage switching chamber, and the decompression module base body, the decompression module support and the preceding stage decompression module base body form a decompression module chamber. The invention realizes the simultaneous sealing and mutual insulation of a plurality of cables, has a simplified structure and a small volume, can adjust the sealing module according to the requirement and has pressure compensation.
Description
Technical Field
The invention relates to the technology in the field of high-voltage equipment, in particular to a modular multi-cable via hole insulating sealing structure based on pressure compensation.
Background
In industrial production and scientific research and experimental research related to high-pressure vessels, a plurality of power supply or sensor signal cables are generally arranged in the vessels, and the design of a via hole sealing structure from a high-voltage side to a low-voltage side of the plurality of cables is very important. Taking a high-pressure thermal hydraulic experiment as an example, in order to obtain detailed high-precision experimental data, a plurality of various sensors need to be arranged in a test section. The design of a via hole sealing structure of a plurality of cables consisting of control/output signal lines of a sensor is one of the main difficulties in the design of a thermal hydraulic experiment.
The existing cable sealing device is only suitable for sealing of a single cable, needs extra insulation design when the number of the sealed cables is large, can not compensate pressure, and is not suitable for high pressure difference conditions due to the pressure difference born by the sealing structure.
Disclosure of Invention
Aiming at the defect that the low-voltage applicable condition in the prior art cannot be taken into consideration by a detachable sealing structure, the invention provides the pressure compensation-based modular multi-cable via hole insulating sealing structure, which can realize simultaneous sealing and mutual insulation of multiple cables, has a simplified structure and a small volume, can adjust a sealing module according to the requirement and has pressure compensation.
The invention is realized by the following technical scheme:
the invention relates to a modular multi-cable sealing structure, comprising: set up in the high pressure switching section of high pressure side, set up in the low pressure switching section of low pressure side and a plurality of series connection set up in decompression module wherein, wherein: the high-voltage switching section comprises a high-voltage switching bracket and a high-voltage switching base body which is arranged in the high-voltage switching bracket and is provided with a high-voltage switching conductor column; the low pressure changeover portion includes: a low voltage switching base with a low voltage switching conductor post; the pressure reduction module includes: the high-voltage switching support, the high-voltage switching base body and the decompression module base body form a high-voltage switching chamber, and the decompression module base body, the decompression module support and the preceding stage decompression module base body form a decompression module chamber.
And gas or liquid inlet outlets are formed in the high-pressure switching chamber and the pressure reducing module chamber, and pressure compensation is realized by connecting the high-pressure switching chamber and the pressure reducing module chamber with an external stable pressure gas or liquid source.
The pressure compensation is determined by the actual processing material of the module and the sealing pressure satisfied by the mechanical seal design, i.e. the pressure compensation
Wherein:
in order to compensate for the pressure in the nth stage,
depending on the pressure differential that can be satisfied by the mechanical seal between the two stages.
Technical effects
The invention integrally solves the defects that the sealing structure in the prior art can not be disassembled and the sealing application pressure range is low; when improving sealed effect through high-low pressure switching module and decompression module, each part of seal structure is detachable design, the installation of being convenient for maintain, utilizes pressure compensation and modularized design extension application pressure scope, can satisfy the high-pressure sealed demand.
Compared with the prior art, the device supports simultaneous sealing of a plurality of cables, and can be designed and used for sealing any number of cables; all parts of the sealing structure can be disassembled, so that the maintenance is convenient; the pressure is gradually decreased by utilizing an external pressure-stabilizing air source, so that the sealing effect is improved; and external pressure compensation is adopted, so that the pressure application range is widened.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a three-dimensional exploded view of the present invention;
FIG. 3 is a schematic view of the overall assembly of the present invention;
FIG. 4 is a photograph of an embodiment of the present invention;
in the figure: the device comprises a high-voltage adapter section A, a decompression module B, a low-voltage adapter section C, a wall body 1, a high-voltage adapter support 2, a decompression module support 3, a high-voltage adapter base 4, a decompression module base 5, a low-voltage adapter base 6, a high-voltage adapter conductor post 7, a decompression module conductor post 8, a low-voltage adapter conductor post 9, a sealing gasket 10, a sealing groove 11, a high-voltage adapter chamber 12, a decompression module chamber 13, a high-voltage adapter chamber inlet 14, a decompression module chamber inlet 15 and bolt holes 16.
Detailed Description
As shown in fig. 1, the present embodiment relates to a modular multi-cable sealing structure, including: set up in the high pressure switching section A of high pressure side, set up in the low pressure switching section C of low pressure side and a plurality of series connection set up in decompression module B wherein, wherein: the high-voltage switching section A comprises a high-voltage switching bracket 2 and a high-voltage switching base body 4 which is arranged in the high-voltage switching bracket and is provided with a high-voltage switching conductor post 7; the low-voltage adapter section C comprises: a low-voltage switching base body 6 with a low-voltage switching conductor column 9; the pressure reducing module B includes: the high-voltage switching module comprises a voltage reduction module support 3 and a voltage reduction module base body 5 which is arranged in the pressure reduction module support and provided with a voltage reduction module conductor column 8, wherein the high-voltage switching conductor column 7, the voltage reduction module conductor column 8 and a low-voltage switching conductor column 9 are sequentially connected, the high-voltage switching support 2, the high-voltage switching base body 4 and the voltage reduction module base body 5 form a high-voltage switching chamber 12, and the voltage reduction module base body 5, the voltage reduction module support 3 and the preceding stage voltage reduction module base body 5 form a voltage reduction module chamber 13.
The high-voltage switching conductor column 7 is arranged in the high-voltage switching base body 4 in a penetrating mode, and a sealing gasket 10 is arranged on the contact surface of the shoulder of the high-voltage switching conductor column 7 and the high-voltage switching base body 4.
The decompression module conductor column 8 is arranged in the decompression module base body 5 in a penetrating mode, and a sealing gasket 10 is arranged on the contact surface of the shoulder part of the decompression module conductor column 8 and the decompression module base body 5.
The low-voltage switching conductor column 10 is arranged in the low-voltage switching base body 6, and one end of the low-voltage switching conductor column is connected with the decompression module conductor column 8.
The high-pressure switching support 2 is connected with the decompression module support 3 through the sealing grooves 11, and the decompression module support 3 is connected with the high-pressure switching support through the sealing grooves 11.
One side of the high-pressure adapter bracket 2 is a flange surface, the flange surface is preferably fixed on the surface of a wall body of the cable via hole through a bolt, and the flange surface and the wall body can be sealed through a sealing ring or a sealing sheet as required.
The high-voltage switching base body 4, the decompression module base body 5 and the low-voltage switching base body 6 are all made of insulating materials or the surfaces of the high-voltage switching base body, the decompression module base body and the low-voltage switching base body are subjected to insulating treatment.
One end of the high-voltage switching conductor column 7 is connected with each cable on the high-voltage side, and the other end of the high-voltage switching conductor column is connected with the conductor column 8 of the decompression module through threads; one end of the low-voltage switching conductor column 9 is connected with the low-voltage lateral cable, and the other end of the low-voltage switching conductor column is connected with the decompression module conductor column 8 through threads; the conductor columns 8 of the plurality of series-connected decompression modules are connected through screw threads. On one hand, the conductor columns are pressed against the sealing gasket to realize sealing by means of threaded fit among the conductor columns. On the other hand, the pressure difference between the high pressure side and the low pressure side can also enable the conductor column to press the gasket to achieve self-pressing type sealing.
All be equipped with gas or liquid and get into the export on high pressure switching chamber 12 and the decompression module cavity 13, realize pressure compensation through linking to each other with outside steady voltage gas or liquid source, specifically do: by adopting external stable pressure gas or liquid source with gradually reduced pressure, the pressure difference between the high-pressure side and the high-pressure switching chamber, between the high-pressure switching chamber and the decompression module chamber, between the decompression module chambers and between the decompression module chamber and the low-pressure side is reduced, so that the sealing effect between each module conductor column and the substrate is ensured. The number of pressure reduction modules and the pressure of the stabilized gas or liquid source can be arranged as required according to the difference of the actual high-side pressure.
As shown in fig. 4, the brackets are made of 304 stainless steel, the base body is made of polytetrafluoroethylene, the conductor columns are made of red copper, sealing rings between the brackets are made of fluororubber, sealing gaskets between the conductor columns and the base body are made of silicon gaskets, the bolts are 304 stainless steel bolts, the conductor columns are connected with cables through bullet terminals, and the compensation air source is compressed air. Experiments prove that the sealing requirement that the high-pressure side pressure is 1.5MPa can be met under the condition that the pressure-stabilizing air source of the pressure-reducing module B and the high-pressure adapter chamber 12 are not arranged and is 0.8MPa, and all cables are free of leakage.
Compared with the prior art, all sealing parts of the device are in detachable design and convenient to maintain; the sealing performance is improved by utilizing pressure compensation; the modularized design can meet different application scenes, and the decompression module can be added to be suitable for high-pressure sealing conditions.
The foregoing embodiments may be modified in many different ways by those skilled in the art without departing from the spirit and scope of the invention, which is defined by the appended claims and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (7)
1. A modular multi-cable seal structure, comprising: set up in the high pressure switching section of high pressure side, set up in the low pressure switching section of low pressure side and a plurality of series connection set up in decompression module wherein, wherein: the high-voltage switching section comprises a high-voltage switching bracket and a high-voltage switching base body which is arranged in the high-voltage switching bracket and is provided with a high-voltage switching conductor column; the low pressure changeover portion includes: a low voltage switching base with a low voltage switching conductor post; the pressure reduction module includes: the high-voltage adapter support, the high-voltage adapter support and the preceding stage decompression module base body form a high-voltage adapter chamber, and the decompression module base body, the decompression module support and the preceding stage decompression module base body form a decompression module chamber;
all be equipped with gas or liquid and get into the export on high pressure switching cavity and the decompression module cavity, realize pressure compensation through linking to each other with outside steady voltage gas or liquid source, specifically do: by adopting external stable pressure gas or liquid source with gradually reduced pressure, the pressure difference between the high-pressure side and the high-pressure switching chamber, between the high-pressure switching chamber and the decompression module chamber, between the decompression module chambers and between the decompression module chamber and the low-pressure side is reduced, so that the sealing effect between each module conductor column and the substrate is ensured.
2. The modular multi-wire seal arrangement of claim 1, wherein said pressure compensation is based on the actual processing material of the module and the sealing pressure that the mechanical seal design can meet, i.e. the pressure compensation pressure
Wherein:
in order to compensate for the pressure in the nth stage,
depending on the pressure differential that can be satisfied by the mechanical seal between the two stages.
3. The modular multi-cable sealing structure according to claim 1, wherein the high-voltage switching conductor column penetrates through the high-voltage switching base body, and a sealing gasket is arranged on a contact surface between a shoulder of the high-voltage switching conductor column and the high-voltage switching base body;
the decompression module conductor column penetrates through the decompression module base body, and a sealing gasket is arranged on the contact surface of the shoulder part of the decompression module conductor column and the decompression module base body;
the low-voltage switching conductor column is arranged in the low-voltage switching base body, and one end of the low-voltage switching conductor column is connected with the voltage reduction module conductor column.
4. The modular multi-cable seal structure of claim 1, wherein the high pressure transition support is connected to the pressure reduction module support and the pressure reduction module support through seal grooves.
5. The modular multi-cable sealing structure according to claim 1, wherein one side of the high-pressure adapter bracket is a flange surface, the flange surface is fixed on the wall surface of the cable through hole through bolts, and the flange surface and the wall are sealed through a sealing ring or a sealing sheet.
6. The modular multi-cable sealing structure according to claim 1, wherein the high voltage transition substrate, the pressure reduction module substrate and the low voltage transition substrate are made of insulating materials or have surfaces subjected to insulation treatment.
7. The modular multi-cable sealing structure according to claim 1, wherein one end of the high-voltage switching conductor column is connected with each cable on the high-voltage side, and the other end of the high-voltage switching conductor column is connected with the voltage-reducing module conductor column through threads; one end of the low-voltage switching conductor column is connected with the low-voltage lateral cable, and the other end of the low-voltage switching conductor column is connected with the conductor column of the decompression module through threads; and the conductor columns of the plurality of series-connected decompression modules are connected through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898060.XA CN113437712B (en) | 2021-08-05 | 2021-08-05 | Modular multi-cable via hole insulating sealing structure based on pressure compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110898060.XA CN113437712B (en) | 2021-08-05 | 2021-08-05 | Modular multi-cable via hole insulating sealing structure based on pressure compensation |
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| Publication Number | Publication Date |
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| CN113437712A CN113437712A (en) | 2021-09-24 |
| CN113437712B true CN113437712B (en) | 2022-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110898060.XA Active CN113437712B (en) | 2021-08-05 | 2021-08-05 | Modular multi-cable via hole insulating sealing structure based on pressure compensation |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04351413A (en) * | 1991-05-27 | 1992-12-07 | Sumitomo Electric Ind Ltd | Wire penetrating section module and fabrication thereof |
| DE10150075A1 (en) * | 2001-10-10 | 2003-04-17 | Roxtec Ingenieur Gmbh | Module for a sealed passage for cables/pipes, through constructions, has a lateral recess around its outer sealing surfaces with at least one drilling to the interior to test the hermetic sealing |
| CN102308449A (en) * | 2009-02-04 | 2012-01-04 | 烙克赛克有限公司 | A pipe or cable lead-through having modularized modules |
| CN102544879A (en) * | 2010-09-17 | 2012-07-04 | 烙克赛克有限公司 | Modular connector for cables or pipes and system comprising such modular connector |
| CN104641524A (en) * | 2012-07-02 | 2015-05-20 | 泰科电子瑞侃有限公司 | Cable sealing unit with multiple sealing modules |
| CN106465558A (en) * | 2014-06-04 | 2017-02-22 | 西门子股份公司 | Pressure compensator and electrical connection device |
| CN108711797A (en) * | 2018-08-16 | 2018-10-26 | 福州万山电力咨询有限公司 | A kind of modular cable gap bridge expansion compensation device |
| CN208386072U (en) * | 2018-06-27 | 2019-01-15 | 阳光电源股份有限公司 | High voltage cable guiding device through walls |
-
2021
- 2021-08-05 CN CN202110898060.XA patent/CN113437712B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04351413A (en) * | 1991-05-27 | 1992-12-07 | Sumitomo Electric Ind Ltd | Wire penetrating section module and fabrication thereof |
| DE10150075A1 (en) * | 2001-10-10 | 2003-04-17 | Roxtec Ingenieur Gmbh | Module for a sealed passage for cables/pipes, through constructions, has a lateral recess around its outer sealing surfaces with at least one drilling to the interior to test the hermetic sealing |
| CN102308449A (en) * | 2009-02-04 | 2012-01-04 | 烙克赛克有限公司 | A pipe or cable lead-through having modularized modules |
| CN102544879A (en) * | 2010-09-17 | 2012-07-04 | 烙克赛克有限公司 | Modular connector for cables or pipes and system comprising such modular connector |
| CN104641524A (en) * | 2012-07-02 | 2015-05-20 | 泰科电子瑞侃有限公司 | Cable sealing unit with multiple sealing modules |
| CN106465558A (en) * | 2014-06-04 | 2017-02-22 | 西门子股份公司 | Pressure compensator and electrical connection device |
| CN208386072U (en) * | 2018-06-27 | 2019-01-15 | 阳光电源股份有限公司 | High voltage cable guiding device through walls |
| CN108711797A (en) * | 2018-08-16 | 2018-10-26 | 福州万山电力咨询有限公司 | A kind of modular cable gap bridge expansion compensation device |
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| CN113437712A (en) | 2021-09-24 |
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