CN112820465A - Waterproof end of motor cable and production process - Google Patents
Waterproof end of motor cable and production process Download PDFInfo
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- CN112820465A CN112820465A CN202110027091.8A CN202110027091A CN112820465A CN 112820465 A CN112820465 A CN 112820465A CN 202110027091 A CN202110027091 A CN 202110027091A CN 112820465 A CN112820465 A CN 112820465A
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- sealing
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 167
- 239000010410 layer Substances 0.000 claims abstract description 152
- 239000011241 protective layer Substances 0.000 claims abstract description 54
- 230000001681 protective effect Effects 0.000 claims description 55
- 239000003822 epoxy resin Substances 0.000 claims description 46
- 229920000647 polyepoxide Polymers 0.000 claims description 46
- 238000007711 solidification Methods 0.000 claims description 9
- 230000008023 solidification Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 34
- 239000012466 permeate Substances 0.000 abstract description 3
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Cable Accessories (AREA)
Abstract
The application relates to a waterproof end of a motor cable and a production process, wherein the waterproof end of the motor cable comprises a cable, a sealing element and a sealing layer; the cable comprises a lead, an insulating layer and a protective layer, wherein one end of the insulating layer extends out of the protective layer, a gap is formed in the periphery of a section of the insulating layer extending out of the protective layer, and the gap penetrates through the insulating layer and enables the lead to be exposed; the sealing layer covers the periphery of the insulating layer, covers the gap and covers the periphery of the lead; one end of the sealing element is coated with the protective layer, and the other end of the sealing element is coated with the periphery of one section of the insulating layer extending out of the protective layer. If the protective layer and the insulating layer are broken, water permeates into the cable, when the water leaks to the sealing element and the sealing layer, the water is sealed at four positions between the peripheries of the sealing layer and the insulating layer, between the peripheries of the sealing layer and the conducting wire, between the peripheries of the sealing element and the protective layer and between the peripheries of the sealing element and the insulating layer so as to prevent the water from continuously leaking, and further the water is prevented from permeating into the junction box.
Description
Technical Field
The application relates to the field of motor cable ends, in particular to a waterproof motor cable end and a production process.
Background
The submersible pump is an important device for pumping water from deep wells, and when the submersible pump is used, the whole unit is submerged to work.
The submersible electric pump unit mainly comprises a water pump, a water delivery pipe, a submersible motor and a cable. When the submersible electric water pump works, the water pump and the submersible motor are completely immersed in water; the lower end of the water pipe is immersed in water and communicated with a water pump, and the upper end of the water pipe extends out of the water surface; the lower extreme of cable is immersed in the aquatic to connect the dive motor, and the upper end of cable stretches out the surface of water and connects power supply unit, and then for the dive motor power supply.
Usually, be equipped with the wiring hole that the power cable passed on submersible motor's the terminal box, and the periphery interference of cable has cup jointed the rubber circle, and the rubber circle interference inlays and establishes to the wiring downthehole, and then realizes between cable periphery and the rubber circle and the wiring hole between interior week sealed, avoids water infiltration submersible motor in.
Meanwhile, the cable comprises a plurality of strands of wires, an insulating layer coated on the outer side of each strand of wire and a protective layer coated on the outer side of each strand of insulating layer, and the rubber ring is sleeved on the periphery of the protective layer in an interference manner.
In addition, in order to facilitate wiring in the wiring box, one end of the multiple insulating layers extends out of the protective layer, so that the multiple insulating layers are separated from each other; one end of the wire extends out of the insulating layer to complete the wiring.
In view of the above-mentioned related art, the inventor believes that if the protective layer is broken, water enters into the protective layer and then permeates into the junction box of the submersible motor from the gap between the multiple insulating layers, resulting in the submersible motor being damaged by the water.
Disclosure of Invention
In order to improve the leakproofness of motor cable end, avoid the terminal box to intake, this application provides a waterproof end of motor cable and production technology.
First aspect, the application provides a waterproof end of motor cable adopts following technical scheme:
the utility model provides a waterproof end of motor cable, includes the cable, the cable includes one or stranded wire, cladding in the insulating layer of every strand of wire outside and the protective layer of cladding in one or stranded insulating layer outside, just the protective layer is stretched out to the one end of insulating layer: the sealing device also comprises a sealing element and a sealing layer;
a gap is formed in the periphery of one section of the insulating layer extending out of the protective layer, penetrates through the insulating layer and enables the lead to be exposed;
the sealing layer covers the periphery of the insulating layer, covers the notch and covers the periphery of the lead;
one end of the sealing element is coated with the protective layer, and the other end of the sealing element is coated with one section of periphery of the insulating layer extending out of the protective layer.
Through adopting above-mentioned technical scheme, if protective layer, insulating layer fracture, then in the water infiltration cable to along the clearance between protective layer and the insulating layer, the clearance seepage between insulating layer and the wire, when water seepage was to sealing member and sealing layer department, between the periphery of sealing layer and insulating layer, between the periphery of sealing layer and wire, between the periphery of sealing member and protective layer and between the periphery of sealing member and insulating layer, this continuation seepage in order to block water is all sealed everywhere, and then avoids water infiltration in the terminal box.
Optionally, the seal comprises a seal plate; the sealing plate is provided with a plurality of through holes, a space exists between every two adjacent through holes, and each insulating layer penetrates into one through hole.
By adopting the technical scheme, each insulating layer penetrates into one through hole, so that the sealing between the sealing element and the periphery of the insulating layer is realized; meanwhile, the distance between the through holes enables the adjacent insulating layers to have the distance between the through holes, so that the wires are separated from each other, and the short circuit of the wires exposed at the notches is avoided.
Optionally, the inner periphery of the through hole is attached to the outer periphery of the insulating layer, the sealing element further comprises a sealing sleeve, one end of the sealing sleeve is coated with the protective layer, and the other end of the sealing sleeve is coated with the sealing plate.
By adopting the technical scheme, the sealing between the inner periphery of the sealing sleeve and the outer periphery of the protective layer is realized, and the sealing between the inner periphery of the sealing sleeve and the outer periphery of the sealing plate is realized; the sealing between the sealing member and the periphery of the insulating layer is matched, and when water leaks along the gap between the protective layer and the insulating layer, the water is prevented from permeating into the junction box.
Optionally, the junction box further comprises a protective sleeve, wherein the protective sleeve is sleeved on the periphery of the sealing sleeve and is used for being embedded into the wiring hole of the junction box;
the sealing member further comprises an epoxy resin layer, and the epoxy resin layer is located between the protecting sleeve and the sealing sleeve.
By adopting the technical scheme, the gap between the protective sleeve and the sealing sleeve is filled with the epoxy resin to provide sealing between the protective sleeve and the sealing sleeve; meanwhile, the epoxy resin layer provides support for the protective sleeve, so that the outer periphery of the protective sleeve is tightly matched with the wiring hole of the junction box, and sealing is provided between the protective sleeve and the inner periphery of the wiring hole.
Optionally, the axial length of the protective sleeve is greater than that of the sealing sleeve, and the protective sleeve is further sleeved to the periphery of the sealing layer.
By adopting the technical scheme, the protective sleeve and the epoxy resin layer are used for providing protection for the sealing sleeve, so that the probability of damage of the ring sealing sleeve is reduced; meanwhile, the protective sleeve provides protection for the sealing layer, and the probability of damage of the ring sealing layer is reduced.
Optionally, the sealing layer is integrally formed with the epoxy resin layer.
By adopting the technical scheme, when the epoxy resin is filled, the epoxy resin flows to the gap, and then the epoxy resin is coated on the periphery of the conducting wire and the insulating layer to provide sealing.
Optionally, the sealing sleeve is a heat shrink tube.
By adopting the technical scheme, the sealing sleeve is convenient to install, and after the sealing sleeve is shrunk, the sealing between the inner periphery of the sealing sleeve and the outer periphery of the protective layer and the sealing between the inner periphery of the sealing sleeve and the outer periphery of the sealing element are realized.
In a second aspect, the application provides a production process of a waterproof end of a motor cable, which adopts the following technical scheme:
a production process of a waterproof end head of a motor cable is used for producing the waterproof end head of the motor cable, and is characterized by comprising the following steps:
s1, pre-installing a protective sleeve, and sleeving the protective sleeve to the periphery of the cable;
s2, mounting a sealing plate, sleeving the sealing plate on the periphery of the insulating layer, and penetrating each insulating layer into one through hole;
s3, removing the insulating layer, and processing an annular gap on the insulating layer;
s4, mounting a sealing sleeve, and sleeving the sealing sleeve on the peripheries of the sealing plate and the protective layer;
s5, mounting a protective sleeve, and sliding the protective sleeve to enable the protective sleeve to be sleeved on the periphery of the sealing sleeve;
s6, packaging, pouring epoxy resin into the protective sleeve, and obtaining the product after solidification.
Optionally, the step of packaging includes:
s6-1, positioning, adjusting the position between the protective sleeve and the cable, pouring a set amount of epoxy resin into the protective sleeve, wherein the epoxy resin is an immersion sealing sleeve, and after solidification, positioning between the protective sleeve and the cable is completed;
s6-2, filling a set amount of epoxy resin into the protective sleeve, filling the protective sleeve with the epoxy resin, and forming an epoxy resin layer and a sealing layer after the epoxy resin layer and the sealing layer are solidified;
s6-3, feeding materials, after the epoxy resin is solidified and the volume is reduced, filling the epoxy resin again, and obtaining the product after solidification.
In summary, the present application includes at least one of the following beneficial technical effects:
1. if the protective layer and the insulating layer are broken, water permeates into the cable and leaks along the gap between the protective layer and the insulating layer and the gap between the insulating layer and the lead, and when the water leaks to the sealing element and the sealing layer, the water is sealed at four positions between the sealing layer and the periphery of the insulating layer, between the sealing layer and the periphery of the lead, between the sealing element and the periphery of the protective layer and between the sealing element and the periphery of the insulating layer so as to prevent the water from continuously leaking, so that the water is prevented from permeating into the junction box;
2. filling a gap between the protective sleeve and the sealing sleeve with epoxy resin to provide sealing between the protective sleeve and the sealing sleeve; meanwhile, the epoxy resin layer provides support for the protective sleeve, so that the outer periphery of the protective sleeve is tightly matched with the wiring hole of the junction box, and sealing is provided between the protective sleeve and the inner periphery of the wiring hole.
Drawings
Fig. 1 is a schematic structural diagram of a waterproof terminal of a motor cable.
Fig. 2 is a schematic structural view of a cable.
Fig. 3 is a schematic view of the connection structure of the sealing member and the cable.
Fig. 4 is a structural sectional schematic view of the waterproof end head of the motor cable.
Fig. 5 is an enlarged view at a in fig. 4.
Description of reference numerals: 1. a cable; 11. a wire; 12. an insulating layer; 121. a notch; 13. a protective layer; 2. a protective sleeve; 21. a rubber sleeve; 211. a baffle ring; 22. a connecting ring; 23. a connecting portion; 231. mounting holes; 3. a seal member; 31. a sealing plate; 311. a through hole; 32. sealing sleeves; 4. a sealing layer; 5. and an epoxy resin layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The junction box of the submersible motor is provided with a wiring hole through which the power cable 1 passes, and the wiring hole penetrates through the side wall of the junction box. Meanwhile, threaded holes are formed in the outer wall of the junction box and located on two sides of the wiring hole.
Referring to fig. 1, the embodiment of the application discloses a waterproof end of a motor cable, which comprises a cable 1 and a protective sleeve 2.
Referring to fig. 1 and 2, the cable 1 includes a conductive wire 11, an insulating layer 12, and a protective layer 13.
The lead 11 is provided with one strand or a plurality of strands, the insulating layer 12 is coated on the periphery of the lead 11, the periphery of each strand of lead 11 is coated with one insulating layer 12, and the protective layer 13 is coated on the periphery of all the insulating layers 12. In this embodiment, taking three strands of wires 11 as an example, three strands of insulation layers 12 are correspondingly provided.
Referring to fig. 1, the shield 2 is fitted with a wiring hole, and the shield 2 includes a rubber sleeve 21, a connection ring 22, and a connection part 23.
The rubber sleeve 21 is sleeved and attached to the periphery of the protective layer 13 to form sealing between the rubber sleeve 21 and the protective layer 13; the connecting ring 22 is coaxially arranged on the periphery of the rubber sleeve 21; the two connecting parts 23 are symmetrically arranged and are positioned on the periphery of the connecting ring 22; meanwhile, the connecting portion 23 is provided with a mounting hole 231, and the mounting hole 231 penetrates the connecting portion 23 in the axial direction of the rubber sleeve 21.
When the wiring box is used, the rubber sleeve 21 is inserted into the wiring hole of the wiring box, and the outer periphery of the rubber sleeve 21 is in interference fit with the inner periphery of the wiring hole, so that the protection sleeve 2 and the wiring hole are sealed; the bolt passes through the mounting hole 231 and is screwed into the threaded hole of the junction box.
Referring to fig. 2 and 3, one end of the insulating layer 12 extends out of the protective layer 13, the waterproof end of the motor cable further comprises a sealing element 3, and the sealing element 3 covers the periphery of the protective layer 13 and covers a section of the periphery of the insulating layer 12 extending out of the protective layer 13. The seal 3 includes a seal plate 31 and a seal sleeve 32.
The sealing plate 31 is disc-shaped, and the sealing plate 31 is provided with three through holes 311, the number of the through holes 311 is the same as the number of the strands of the conducting wires 11, that is, in the embodiment, the three through holes 311 are provided, the three strands of insulating layers 12 are respectively arranged in the three through holes 311, and one end of the sealing member 3 is attached to the end portion of the protective layer 13. Meanwhile, the outer periphery of the insulating layer 12 is closely attached to the inner periphery of the through hole 311 to achieve sealing.
The sealing sleeve 32 is sleeved to the outer periphery of the sealing member 3, and the axial length of the sealing sleeve 32 is greater than that of the sealing member 3, so that one end of the sealing sleeve 32 is sleeved to the outer periphery of the protective layer 13, and the other end of the sealing sleeve 32 is sleeved to the outer periphery of the insulating layer 12. Meanwhile, the inner circumference of the sealing sleeve 32 is closely attached to the outer circumference of the protective layer 13, and the inner circumference of the sealing sleeve 32 is closely attached to the outer circumference of the sealing member 3, thereby achieving sealing at two places.
In this embodiment, the sealing sleeve 32 is made of a heat shrinkable tube, and after the sealing sleeve 32 is sleeved on the outer periphery of the sealing member 3, the sealing sleeve 32 is heated to shrink so as to be closely attached to the outer peripheries of the protective layer 13 and the sealing member 3.
Referring to fig. 3 and 4, a gap 121 is further formed in a section of the periphery of the insulating layer 12 extending out of the protective layer 13, the gap 121 is annular, and the insulating layer 12 on two sides of the gap 121 is in a blocking state, and at this time, the wire 11 is exposed at the gap 121. Meanwhile, the periphery of the notch 121 is further coated with a sealing layer 4, so that the sealing layer 4 is tightly attached to the periphery of the insulating layer 12, the sealing layer 4 is tightly attached to the periphery of the wire 11 at the notch 121, and sealing is achieved at two positions.
Referring to fig. 4, the inner circumference of the rubber sleeve 21 is further provided with a stopper ring 211, and one end of the stopper ring 211 abuts against the end of the sealing sleeve 32 to complete the axial positioning of the rubber sleeve 21. Epoxy resin is filled between the protective sleeve 2 and the sealing sleeve 32, so that an epoxy resin layer 5 is formed, and the sealing sleeve 32 is tightly coated by the epoxy resin layer 5, so that the sealing effect is further improved; and the epoxy resin layer 5 provides support for the rubber sleeve 21, so that the outer periphery of the rubber sleeve 21 closely fits the inner periphery of the small hole, and the sealing effect with the inner periphery of the wiring hole is improved.
Meanwhile, referring to fig. 4 and 5, when the sealing member 3 abuts against the end portion of the protection layer 13, the inner periphery of one end of the through hole 311 close to the protection layer 13 is attached to the outer periphery of the insulation layer 12, meanwhile, one end of the notch 121 close to the protection layer 13 is located in the through hole 311, and one end of the notch 121 far from the protection layer 13 extends out of the through hole 311; when the retainer ring 211 abuts against the end of the sealing sleeve 32, the gap 121 is located in the rubber sleeve 21, and the filled epoxy resin also covers the gap 121 to form the sealing layer 4, i.e., the epoxy resin layer 5 and the sealing layer 4 are integrally formed.
The implementation principle of the waterproof end of the motor cable in the embodiment of the application is as follows: in water infiltration cable 1 to when along the clearance between protective layer 13 and insulating layer 12, the clearance seepage between insulating layer 12 and the wire 11, between the periphery of sealing layer 4 and insulating layer 12, between the periphery of sealing layer 4 and wire 11, between the periphery of sealing member 3 and protective layer 13 and between the periphery of sealing member 3 and insulating layer 12, should all seal the continuation seepage in order to block water all around, and then avoid water infiltration in the terminal box.
The embodiment of the application also discloses a production process of the waterproof end head of the motor cable, which comprises the following steps:
s1, pre-installing a protective sleeve, and sleeving the protective sleeve 2 to the periphery of the cable 1;
s2, mounting a sealing plate, sleeving the sealing plate 31 on the periphery of the insulating layer 12, and passing each insulating layer 12 through one through hole 311;
s3, removing the insulating layer, and processing a ring-shaped notch 121 on the insulating layer 12;
s4, mounting a sealing sleeve, and sleeving the sealing sleeve 32 to the sealing plate 31 and the periphery of the protective layer 13;
s5, mounting a protective sleeve, and sliding the protective sleeve 2 to enable the protective sleeve 2 to be sleeved on the sealing sleeve 32 and the periphery of the notch 121;
s6, packaging, and pouring epoxy resin into the protective sleeve 2;
s6-1, adjusting the position between the protective sleeve 2 and the cable 1 to be coaxial, pouring a certain amount of epoxy resin into the protective sleeve 2, wherein the epoxy resin is used for immersing the sealing sleeve 32, and after solidification, completing the positioning between the protective sleeve 2 and the cable 1;
s6-2, filling, namely filling a set amount of epoxy resin into the protective sleeve 2, and forming an epoxy resin layer 5 and a sealing layer 4 after solidification;
s6-3, feeding materials, after the epoxy resin is solidified and the volume is reduced, filling the epoxy resin again, and obtaining the product after solidification.
Wherein, the step S3 of removing the insulating layer 12 and the step S4 of installing the sealing sleeve 32 can be combined as a step H1 of installing the sealing sleeve 32 and processing the notch 121, and the specific procedures are as follows:
h1-1, heating a section of the insulating layer 12 extending out of the protective layer 13 to soften the insulating layer and make the insulating layer close to a molten state;
h1-2 sleeving sealing sleeves, wherein the sealing plate 31 is sleeved on the periphery of the insulating layer 12, and each insulating layer 12 penetrates into one through hole 311;
h1-3 is formed and positioned, the sealing plate 31 is slid to make the sealing plate 31 abut against the protective layer 13, during the sliding process, the sealing plate 31 passes through the outer periphery of the softened insulating layer 12, during the process, because the inner periphery of the through hole 311 is tightly attached to the outer periphery of the insulating layer 12, the sealing plate 31 extrudes and pushes the softened insulating layer 12, and further the softened insulating layer 12 is rolled up towards the protective layer 13, so that the softened insulating layer 12 is disconnected from the non-softened insulating layer 12, and a notch 121 is formed; meanwhile, in the above process, the partially softened insulating layer 12 is embedded in the through hole 311, and the softened insulating layer 12 is cooled and then adhered to the inner circumference of the through hole 311 to enhance the sealing between the through hole 311 and the insulating layer 12.
If necessary, the softened insulating layer 12 and the non-softened insulating layer 12 may be cut with a knife.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a waterproof end of motor cable, includes cable (1), cable (1) includes one or stranded wire (11), cladding in insulating layer (12) in every strand of wire (11) outside and cladding in protective layer (13) in one or stranded insulating layer (12) outside, just protective layer (13), its characterized in that are stretched out to the one end of insulating layer (12): the sealing device also comprises a sealing element (3) and a sealing layer (4);
a gap (121) is formed in the periphery of one section of the insulating layer (12) extending out of the protective layer (13), and the gap (121) penetrates through the insulating layer (12) and enables the lead (11) to be exposed;
the sealing layer (4) covers the periphery of the insulating layer (12), covers the notch (121) and covers the periphery of the lead (11);
one end of the sealing element (3) is coated with the protective layer (13), and the other end of the sealing element (3) is coated with the insulating layer (12) and extends out of the periphery of one section of the protective layer (13).
2. The waterproof motor cable termination of claim 1, wherein: the seal (3) comprises a sealing plate (31); the sealing plate (31) is provided with a plurality of through holes (311), a space exists between every two adjacent through holes (311), and each insulating layer (12) penetrates into one through hole (311).
3. The waterproof motor cable termination of claim 2, wherein: the periphery of the inner periphery of the through hole (311) is attached to the outer periphery of the insulating layer (12), the sealing element (3) further comprises a sealing sleeve (32), one end of the sealing sleeve (32) is wrapped by the protective layer (13), and the other end of the sealing sleeve (32) is wrapped by the sealing plate (31).
4. The waterproof motor cable termination of claim 3, wherein: the protective sleeve is characterized by further comprising a protective sleeve (2), wherein the protective sleeve (2) is sleeved on the periphery of the sealing sleeve (32), and the protective sleeve (2) is embedded into a wiring hole of the junction box;
the sealing element (3) further comprises an epoxy resin layer (5), and the epoxy resin layer (5) is located between the protecting sleeve (2) and the sealing sleeve (32).
5. The waterproof motor cable termination of claim 4, wherein: the axial length of lag (2) is greater than the axial length of seal cover (32), lag (2) still cup joints the periphery to sealing layer (4).
6. The waterproof motor cable termination of claim 4, wherein: the sealing layer (4) and the epoxy resin layer (5) are integrally formed.
7. The waterproof motor cable termination of claim 3, wherein: the sealing sleeve (32) adopts a heat shrinkable tube.
8. A production process of the waterproof end head of the motor cable, which is used for producing the waterproof end head of the motor cable in any one of claims 1 to 6, and is characterized by comprising the following steps:
s1, pre-installing a protective sleeve, and sleeving the protective sleeve (2) to the periphery of the cable (1);
s2, mounting a sealing plate, sleeving the sealing plate (31) on the periphery of the insulating layer (12), and penetrating each insulating layer (12) into one through hole (311);
s3, removing the insulating layer, and processing an annular gap (121) on the insulating layer (12);
s4, mounting a sealing sleeve, and sleeving the sealing sleeve (32) to the peripheries of the sealing plate (31) and the protective layer (13);
s5, mounting a protective sleeve, and sliding the protective sleeve (2) to enable the protective sleeve (2) to be sleeved on the peripheries of the sealing sleeve (32) and the notch (121);
s6, packaging, pouring epoxy resin into the protective sleeve (2), and obtaining the product after solidification.
9. The process for producing the waterproof end of the motor cable according to claim 7, wherein the step of encapsulating comprises:
s6-1, adjusting the position between the protective sleeve (2) and the cable (1), pouring a set amount of epoxy resin into the protective sleeve (2), wherein the epoxy resin is an immersion sealing sleeve (32), and after solidification, completing the positioning between the protective sleeve (2) and the cable (1);
s6-2, filling a set amount of epoxy resin into the protective sleeve (2), filling the protective sleeve with the epoxy resin, and forming an epoxy resin layer (5) and a sealing layer (4) after the epoxy resin is solidified;
s6-3, feeding materials, after the epoxy resin is solidified and the volume is reduced, filling the epoxy resin again, and obtaining the product after solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110027091.8A CN112820465A (en) | 2021-01-09 | 2021-01-09 | Waterproof end of motor cable and production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110027091.8A CN112820465A (en) | 2021-01-09 | 2021-01-09 | Waterproof end of motor cable and production process |
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| CN112820465A true CN112820465A (en) | 2021-05-18 |
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| CN202110027091.8A Pending CN112820465A (en) | 2021-01-09 | 2021-01-09 | Waterproof end of motor cable and production process |
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| CN102904373A (en) * | 2012-10-12 | 2013-01-30 | 友力机电有限公司 | Waterproofing device of cable coupling box |
| CN210325262U (en) * | 2019-08-24 | 2020-04-14 | 中山市蚂蚁照明光电有限公司 | Waterproof cable |
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2021
- 2021-01-09 CN CN202110027091.8A patent/CN112820465A/en active Pending
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| JP2007026821A (en) * | 2005-07-14 | 2007-02-01 | Auto Network Gijutsu Kenkyusho:Kk | Shield conductor |
| CN101232217A (en) * | 2008-01-14 | 2008-07-30 | 浙江大元泵业有限公司 | Leak-proof cable connection sealing device |
| CN101550940A (en) * | 2009-05-04 | 2009-10-07 | 上海奥利泵业制造有限公司 | Submersible shaft pump |
| CN202221883U (en) * | 2011-08-24 | 2012-05-16 | 合肥凯泉电机电泵有限公司 | Hermetically-sealed structure of cable of submerged motor pump |
| CN102904373A (en) * | 2012-10-12 | 2013-01-30 | 友力机电有限公司 | Waterproofing device of cable coupling box |
| CN210325262U (en) * | 2019-08-24 | 2020-04-14 | 中山市蚂蚁照明光电有限公司 | Waterproof cable |
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Application publication date: 20210518 |