CN108054714B - Novel cable conductor seal structure - Google Patents
Novel cable conductor seal structure Download PDFInfo
- Publication number
- CN108054714B CN108054714B CN201810030738.0A CN201810030738A CN108054714B CN 108054714 B CN108054714 B CN 108054714B CN 201810030738 A CN201810030738 A CN 201810030738A CN 108054714 B CN108054714 B CN 108054714B
- Authority
- CN
- China
- Prior art keywords
- gasket
- cable
- step surface
- middle pressure
- bearing
- 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.)
- Active
Links
- 239000004020 conductor Substances 0.000 title claims description 5
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 230000008901 benefit Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
Classifications
-
- 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
- H02G15/00—Cable fittings
- H02G15/013—Sealing means for cable inlets
-
- 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
- H02G15/00—Cable fittings
- H02G15/20—Cable fittings for cables filled with or surrounded by gas or oil
- H02G15/32—Cable inlets
Abstract
The novel cable sealing structure comprises an oil chamber shell, wherein the oil chamber shell is provided with a threading hole, the threading hole is divided into a primary step surface, a secondary step surface and a tertiary step surface which are arranged at intervals from inside to outside, a lower pressure bearing gasket is matched on the primary step surface, a middle pressure bearing gasket is matched on the secondary step surface, the tertiary step is exposed out of the surface of the oil chamber shell, a cable pressing plate is matched on the tertiary step, and the cable pressing plate is fixed on the oil chamber shell through a fastener; a cable buckle piece, an upper gasket and an upper sealing gasket are sequentially arranged between the cable pressing plate and the middle pressure-bearing gasket from top to bottom, and a lower sealing gasket is arranged between the middle pressure-bearing gasket and the lower pressure-bearing gasket; the upper surface of the middle pressure-bearing gasket supports an upper sealing gasket, and the lower surface of the middle pressure-bearing gasket presses down the sealing gasket; the cable cramp is equipped with annular protruding, and annular protruding wears out the cable clamp plate, and annular protruding is the taper to cooperate with cable clamp plate inclined plane. The cable sealing structure of this scheme has triple seal, prevents drawing, occupation space advantage little.
Description
Technical Field
The invention belongs to the technical field of deep-well pumps, and particularly relates to a novel cable sealing structure.
Background
At present, the cable sealing structure of the deep-well pump mainly comprises an integrated vulcanization cable, an epoxy cable and a rubber sealing cable, but along with market demands, the size of the deep-well pump is smaller and larger, and the requirements can not be met particularly on the size, the process, the mechanical structure and the space of the integrated vulcanization cable and the epoxy cable.
Disclosure of Invention
The invention aims to provide a novel cable sealing structure, which solves the problems that the existing cable sealing structure of a deep well pump below 2.5 inches can not be pulled, and a cable is easy to damage and seal is easy to damage.
The purpose of the invention is realized in the following way: the utility model provides a novel cable conductor seal structure, includes the oil chamber casing, is equipped with the through wires hole on the oil chamber casing, its characterized in that: the threading hole is divided into a primary step surface, a secondary step surface and a tertiary step surface which are arranged at intervals from inside to outside, the primary step surface is matched with a lower pressure bearing gasket, the secondary step surface is matched with a middle pressure bearing gasket, the tertiary step is exposed out of the surface of the oil chamber shell, a cable pressing plate is matched on the tertiary step, and the cable pressing plate is fixed on the oil chamber shell through a fastener;
a cable buckle piece, an upper gasket and an upper sealing gasket are sequentially arranged between the cable pressing plate and the middle pressure-bearing gasket from top to bottom, and a lower sealing gasket is arranged between the middle pressure-bearing gasket and the lower pressure-bearing gasket; the upper surface of the middle pressure-bearing gasket supports an upper sealing gasket, and the lower surface of the middle pressure-bearing gasket presses down the sealing gasket; the cable buckle piece is provided with an annular bulge, the annular bulge penetrates through the cable pressing plate, and the annular bulge is conical and is matched with the inclined plane of the cable pressing plate;
the cable sheath layer downwards passes through the annular bulge and the lower gasket and is in sealing fit with the upper sealing gasket; the cable insulating layer in the cable sheath layer downwards passes through the middle pressure bearing gasket, the lower sealing gasket and the lower pressure bearing gasket and is connected with an internal circuit of the oil chamber.
Wherein, the hardness of the lower sealing gasket is smaller than that of the upper sealing gasket.
Wherein, the annular bulge inner wall is arranged with tooth form slot axially.
The hole section of the threading hole between the three-stage step surface and the two-stage step surface is a large hole section, the hole Duan Weixiao hole section of the threading hole between the two-stage step surface and the one-stage step surface is a large hole Duan Checun, the outer diameters of the cable buckle piece, the upper gasket and the upper sealing gasket are matched with the large hole, and the outer diameters of the lower sealing gasket and the lower pressure-bearing gasket are matched with the small hole section in size; the upper part of the middle pressure-bearing gasket is provided with an annular flange clamped on the secondary step surface, and the lower part of the middle pressure-bearing gasket is inserted into the small hole section.
Compared with the prior art, the invention has the following outstanding and beneficial technical effects:
1. the inclined plane structure outside the annular bulge enables the annular bulge to radially compress the cable sheath layer in the axial downward pressing process of the cable pressing plate, so that the cable of the deep-well pump is not pulled to pull out the tensile force, the tensile force passes through the toothed groove structure with the inner hole not being windy, the tensile force can reach 3 times of the weight of the pump, and meanwhile, a sealing structure with the sheath layer and the insulating layer radially mutually extruded is formed;
2. the lower sealing gasket is compressed by the axial transmission force of the cable buckle sheet, the upper gasket, the upper sealing gasket and the middle pressure-bearing gasket, the lower pressure-bearing gasket bears pressure to prevent the lower sealing gasket from falling off, and the sealing of the cable insulating layer is formed; the motor cavity is prevented from being overflowed by oil, and the mutual isolation between water and the inside of the motor is realized.
3. The hardness of the lower sealing gasket is smaller than that of the upper sealing gasket, the lower sealing gasket is fixedly compressed first, when the lower sealing gasket is compressed in place, the annular flange on the middle pressure-bearing gasket is abutted against the secondary step surface and does not move downwards any more, the lower sealing gasket is prevented from being over-compressed, and the compression amount is ensured; at this time, the upper sealing gasket is compressed to form the sealing of the cable sheath layer, so that external water is prevented from entering between the cable sheath layer and the insulating layer, the inside of the cable is ensured to be dry, and the two seals of the water and the inside of the motor are also achieved.
4. The structure benefits from the structural advantage, occupies a small space, and provides a feasible and reliable cable sealing mode for a deep well pump or a small submersible pump with the size below 2.5 inches.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a top view of the present invention;
fig. 3 is a block diagram of the cable of the present invention.
Reference numerals: 1. an oil chamber housing; 2. a threading hole; 3. a lower pressure-bearing gasket; 4. a lower gasket; 5. a middle pressure-bearing gasket; 5a, an annular flange; 6. an upper gasket; 7. a gasket is arranged on the upper part; 8. a cable cleat; 8a, annular protrusions; 8b, tooth-like grooves; 9. a cable pressing plate; 10. a fastener; A. a first level step surface; B. a second step surface; C. three-stage step surfaces; x, cable wires; xa, cable sheath layer; xb, cable insulation layer; xc, cable core.
Detailed Description
The invention is further described in the following embodiments with reference to the figures, see fig. 1-3:
the utility model provides a novel cable conductor seal structure, includes oil chamber casing 1, is equipped with through wires hole 2 on the oil chamber casing 1, its characterized in that: the threading hole 2 is divided into a primary step surface A, a secondary step surface B and a tertiary step surface C which are arranged at intervals from inside to outside, the primary step surface A is matched with a lower pressure bearing gasket 3, the secondary step surface B is matched with a middle pressure bearing gasket 5, the tertiary step is exposed on the surface of the oil chamber shell 1, a cable pressing plate 9 is matched on the tertiary step, and the cable pressing plate 9 is fixed on the oil chamber shell 1 through a fastener 10;
a cable buckle piece 8, an upper gasket 7 and an upper sealing gasket 6 are sequentially arranged between the cable pressing plate 9 and the middle pressure-bearing gasket 5 from top to bottom, and a lower sealing gasket 4 is arranged between the middle pressure-bearing gasket 5 and the lower pressure-bearing gasket 3; the upper surface of the middle pressure-bearing gasket 5 supports an upper sealing gasket 6, and the lower surface of the middle pressure-bearing gasket presses down the sealing gasket 4; the cable buckle piece 8 is provided with an annular bulge 8a, the annular bulge 8a penetrates through the cable pressing plate 9, and the annular bulge 8a is conical and is matched with the cable pressing plate 9 in an inclined plane;
the cable sheath Xa passes through the annular bulge 8a and the lower gasket downwards and is in sealing fit with the upper sealing gasket 6; the cable insulating layer Xb in the cable jacket layer Xa downwards passes through the middle pressure bearing gasket 5, the lower sealing gasket 4 and the lower pressure bearing gasket 3 and is connected with an internal circuit of the oil chamber.
Wherein the lower gasket 4 has a hardness less than that of the upper gasket 6.
Wherein, the inner wall of the annular bulge 8a is axially arranged with tooth-shaped grooves 8b.
The threading hole 2 is a large hole section between the three-stage step surface C and the two-stage step surface B, a hole Duan Weixiao hole section between the two-stage step surface B and the one-stage step surface A, the outer diameters of the cable buckle piece 8, the upper gasket 7 and the upper sealing gasket 6 are matched with the large hole Duan Checun, and the outer diameters of the lower sealing gasket 4 and the lower pressure-bearing gasket 3 are matched with the small hole section in size; the upper part of the middle pressure-bearing gasket 5 is provided with an annular flange 5a clamped on the secondary step surface B, and the lower part of the middle pressure-bearing gasket 5 is inserted into the small hole section.
The technical effects of this scheme have:
1. the inclined surface structure outside the annular bulge 8a enables the annular bulge 8a to radially compress the cable sheath Xa in the axial pressing process of the cable pressing plate 9, so that the deep-well pump cable is not pulled to pull out the tensile force, the tensile force can reach 3 times of the weight of the pump through the toothed groove 8b structure with the inner hole not being windy, and meanwhile, a sealing structure in which the sheath and the insulating layer are radially extruded mutually is formed;
2. the lower sealing gasket 4 is compressed through the axial transmission force of the cable buckle sheet 8, the upper gasket 7, the upper sealing gasket 6 and the middle pressure-bearing gasket 5, the lower pressure-bearing gasket 3 bears the pressure to prevent the lower sealing gasket 4 from falling off, and the sealing of the cable insulating layer Xb is formed; the effects of preventing outside water from entering the motor cavity and preventing oil in the motor cavity from overflowing are achieved, and mutual isolation between water and the inside of the motor is achieved.
3. The hardness of the lower sealing gasket 4 is smaller than that of the upper sealing gasket 6, the lower sealing gasket 4 is fixedly compressed first, when the lower sealing gasket 4 is compressed in place, the annular flange 5a on the middle pressure-bearing gasket 5 is abutted against the secondary step surface B and does not move downwards any more, the lower sealing gasket 4 is prevented from being over-compressed, and the compression amount is ensured; at this time, the upper sealing gasket 6 compresses to form a seal of the cable sheath layer Xa, so as to prevent external water from entering between the cable sheath layer Xa and the insulating layer, ensure the inside of the cable to be dry, and also achieve two seals of water and the inside of the motor to be isolated.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (4)
1. The utility model provides a novel cable conductor seal structure, includes oil chamber casing (1), is equipped with through wires hole (2), its characterized in that on oil chamber casing (1): the threading hole (2) is divided into a primary step surface (A), a secondary step surface (B) and a tertiary step surface (C) which are arranged at intervals from inside to outside, the primary step surface (A) is matched with the lower pressure bearing gasket (3), the secondary step surface (B) is matched with the middle pressure bearing gasket (5), the tertiary step is exposed out of the surface of the oil chamber shell (1), the cable pressing plate (9) is matched on the surface of the oil chamber shell, and the cable pressing plate (9) is fixed on the oil chamber shell (1) through a fastener (10);
a cable buckle piece (8), an upper gasket (7) and an upper sealing gasket (6) are sequentially arranged between the cable pressing plate (9) and the middle pressure-bearing gasket (5) from top to bottom, and a lower sealing gasket (4) is arranged between the middle pressure-bearing gasket (5) and the lower pressure-bearing gasket (3); the upper surface of the middle pressure-bearing gasket (5) supports an upper sealing gasket (6) and the lower surface of the middle pressure-bearing gasket presses down the sealing gasket (4); the cable buckle piece (8) is provided with an annular bulge (8 a), the annular bulge (8 a) penetrates out of the cable pressing plate (9), and the annular bulge (8 a) is conical and is matched with the inclined surface of the cable pressing plate (9);
the cable sheath layer (Xa) downwards passes through the annular bulge (8 a) and the lower gasket and is in sealing fit with the upper sealing gasket (6); the cable insulating layer (Xb) in the cable sheath layer (Xa) downwards passes through the middle pressure-bearing gasket (5), the lower sealing gasket (4) and the lower pressure-bearing gasket (3) and is connected with an oil chamber internal circuit.
2. A novel cable seal structure according to claim 1, wherein: the hardness of the lower sealing gasket (4) is smaller than that of the upper sealing gasket (6).
3. A novel cable seal structure according to claim 1, wherein: the inner wall of the annular bulge (8 a) is axially provided with toothed grooves (8 b).
4. A novel cable seal structure according to claim 1, wherein: the threading hole (2) is a large hole section between the three-stage step surface (C) and the two-stage step surface (B), a hole Duan Weixiao hole section between the two-stage step surface (B) and the one-stage step surface (A), the outer diameters of the cable buckle piece (8), the upper gasket (7) and the upper sealing gasket (6) are matched with the large hole Duan Checun, and the outer diameters of the lower sealing gasket (4) and the lower pressure-bearing gasket (3) are matched with the small hole section in size; the upper part of the middle pressure-bearing gasket (5) is provided with an annular flange (5 a) clamped on the secondary step surface (B), and the lower part of the middle pressure-bearing gasket (5) is inserted into the small hole section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030738.0A CN108054714B (en) | 2018-01-12 | 2018-01-12 | Novel cable conductor seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810030738.0A CN108054714B (en) | 2018-01-12 | 2018-01-12 | Novel cable conductor seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108054714A CN108054714A (en) | 2018-05-18 |
| CN108054714B true CN108054714B (en) | 2024-03-26 |
Family
ID=62127142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810030738.0A Active CN108054714B (en) | 2018-01-12 | 2018-01-12 | Novel cable conductor seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108054714B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232217A (en) * | 2008-01-14 | 2008-07-30 | 浙江大元泵业有限公司 | Leak-proof cable connection sealing device |
| CN201781360U (en) * | 2010-07-30 | 2011-03-30 | 台州神能电器有限公司 | Cable anti-water sealing device for deepwater pump motor |
| CN201946850U (en) * | 2010-12-15 | 2011-08-24 | 中航光电科技股份有限公司 | Coaxial connector for preventing contact element from tilting |
| WO2011151265A2 (en) * | 2010-05-31 | 2011-12-08 | R. Stahl Schaltgeräte GmbH | Cable feedthrough for a pressure-proof enclosure |
| CN202142832U (en) * | 2011-08-16 | 2012-02-08 | 中国石油天然气股份有限公司 | High voltage threading sealing component for oil-submersible servo motor |
| CN203674678U (en) * | 2013-10-29 | 2014-06-25 | 台州凌霄泵业有限公司 | Twin-cable joint sealing structure |
| CN107546708A (en) * | 2017-10-18 | 2018-01-05 | 周海云 | Anti-explosion cable introducing device |
| CN207652004U (en) * | 2018-01-12 | 2018-07-24 | 浙江大元泵业股份有限公司 | A kind of Novel cable line sealing structure |
-
2018
- 2018-01-12 CN CN201810030738.0A patent/CN108054714B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232217A (en) * | 2008-01-14 | 2008-07-30 | 浙江大元泵业有限公司 | Leak-proof cable connection sealing device |
| WO2011151265A2 (en) * | 2010-05-31 | 2011-12-08 | R. Stahl Schaltgeräte GmbH | Cable feedthrough for a pressure-proof enclosure |
| CN201781360U (en) * | 2010-07-30 | 2011-03-30 | 台州神能电器有限公司 | Cable anti-water sealing device for deepwater pump motor |
| CN201946850U (en) * | 2010-12-15 | 2011-08-24 | 中航光电科技股份有限公司 | Coaxial connector for preventing contact element from tilting |
| CN202142832U (en) * | 2011-08-16 | 2012-02-08 | 中国石油天然气股份有限公司 | High voltage threading sealing component for oil-submersible servo motor |
| CN203674678U (en) * | 2013-10-29 | 2014-06-25 | 台州凌霄泵业有限公司 | Twin-cable joint sealing structure |
| CN107546708A (en) * | 2017-10-18 | 2018-01-05 | 周海云 | Anti-explosion cable introducing device |
| CN207652004U (en) * | 2018-01-12 | 2018-07-24 | 浙江大元泵业股份有限公司 | A kind of Novel cable line sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108054714A (en) | 2018-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201498617U (en) | Tail accessory for shielding seal | |
| CN201466242U (en) | Sealing adapting structure for flexible cable | |
| CN108054714B (en) | Novel cable conductor seal structure | |
| CN210829723U (en) | Compressor flexible sealing structure, compressor and air conditioner | |
| CN207652004U (en) | A kind of Novel cable line sealing structure | |
| CN102563587A (en) | Lamp sealing structure and lamp | |
| CN203797167U (en) | Electric apparatus cable outlet hole sealing structure | |
| CN203180207U (en) | Waterproof plug and socket | |
| CN105020483A (en) | Sealing structure for cable outgoing hole of electric device | |
| CN210867391U (en) | Motor casing convenient to cable installation | |
| CN219041309U (en) | Novel oil-immersed pump terminal box seal structure | |
| CN204941427U (en) | Automatic compensation type gapless well mouth sealing device | |
| CN202474397U (en) | Underwater anti-pressure hermetically-sealed connector | |
| CN107070064B (en) | Rubber double-sealing structure of underwater motor cable | |
| CN203584875U (en) | Sealing device of submersible pump | |
| CN202872540U (en) | Leakproof structure of submersible electric pump cable junction box | |
| CN219918592U (en) | Motor with improved oil chamber cover plate structure | |
| CN215732408U (en) | Electronic wire harness with waterproof and dustproof functions | |
| CN209418876U (en) | A kind of non-threaded connector of direct insertion via hole | |
| CN201582143U (en) | Cable lead-in sealing device for submerged electric pump | |
| CN207134746U (en) | Fire resisting high temperature cable tube plugging device | |
| CN209056869U (en) | A kind of sealing structure of submersible electric pump cable | |
| CN217814017U (en) | Sealing structure of water pump top cover and cable | |
| CN219458643U (en) | Cable waterproof structure for water pump | |
| CN110345071B (en) | Flexible sealing structure of compressor and compressor |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |