CN107147239A - Motor lead-out wire structure with water-proof function - Google Patents

Abstract

Motor lead-out wire structure with water-proof function, including end cap, the first lead, the second lead, end cap draw string holes, encapsulation cavity, sealed protective cover；The encapsulation cavity is provided with the end cap；First lead and second lead are drawn in motor, and first lead and second lead by the encapsulation cavity and lead to outside motor from end cap extraction string holes；The end cap draws string holes and is provided with the sealed protective cover.Beneficial effects of the present invention are：（1）Moisture can not enter motor internal by the first peeling section or the second peeling section and encapsulation cavity in the present invention, it is to avoid the entrance of moisture causes the accidents such as electric motor short circuit；（2）The design of sealed protective cover elasticity necking causes outside moisture to cannot be introduced into motor internal, improves the waterproof sealing effect of motor.

Description

Motor lead-out wire structure with water-proof function

Technical field

The present invention relates to circulation pump technical field, and in particular to the motor lead-out wire structure with water-proof function.

Background technology

In the operation of thermal power unit boiler, the water density in down-comer is more than the density of steam water interface in water-cooling wall, The flow head of density contrast formation boiler.When water is close to during critical point, density contrast reduces, and is not enough to maintain flow head, in It is to have installed boiler water circulating pump additional in steam/water circulating down-comer to maintain enough flow heads, can with ensure boiler water cycle By property.

Boiler water circulating pump is made up of a centrifugal pump of single stage type and a wet stator-induced electromagnetic machine, and above-mentioned part is installed in one In individual public pressure vessel.The container is made up of pump case, three parts of motor casing and motor cover, and motor suspension is under pump case, in system Cold demineralized water is filled with pressure, without sealing between centrifugal pump of single stage type and induction machine.Motor is in structure using simple close Sealing is filled up to reach waterproof purpose one by one to the place of leak, but so shirtsleeve operation often effect be it is undesirable, When extraction line insulating layer outside motor occurs damaged, the breakage that water may pass through lead-out wire is exhausted along lead-out wire The gap of edge layer and conductive layer enters motor internal, so as to cause electric motor short circuit, there is potential safety hazard, or end cap draws string holes The poorly sealed real meeting leak in place, so as to cause motor protection rank deficient and the slow shortcoming of efficiency of assembling so that motor holds very much Easily water inlet causes burn-down of electric motor.

The content of the invention

The invention aims to overcome deficiency of the prior art, there is provided the motor lead-out wire knot with water-proof function Structure, in order to solve the above technical problems, the technical scheme is that：

Motor lead-out wire structure with water-proof function, including end cap, the first lead, the second lead, end cap draw string holes, embedding Chamber, sealed protective cover；The encapsulation cavity is provided with the end cap；First lead and second lead draw in motor Go out, and first lead and second lead are led to motor outside by the encapsulation cavity and from end cap extraction string holes Portion；The end cap draws string holes and is provided with the sealed protective cover；

The first peeling section is offered on one section that first lead is located in the encapsulation cavity, second lead is located at described The second peeling section is offered on one section in encapsulation cavity；The sealed protective cover includes necking, connecting portion, fillet, incoming line；Institute Necking is stated located at the connecting portion upper end, the incoming line is located at the connecting portion lower end, the connecting portion and the incoming line Connected by the fillet.

As the improvement of above-mentioned technical proposal, the sealed protective cover material therefor is highly elastic material.

Beneficial effects of the present invention are：（1）Moisture can not pass through the first peeling section or the second peeling section and filling in the present invention Seal chamber and enter motor internal, it is to avoid the entrance of moisture causes the accidents such as electric motor short circuit；（2）Sealed protective cover elasticity necking is set Meter causes outside moisture to cannot be introduced into motor internal, improves the waterproof sealing effect of motor.

Brief description of the drawings

Accompanying drawing 1 is schematic structural view of the invention；

Accompanying drawing 2 is sealed protective cover structural representation of the present invention.

Embodiment

To make to have a better understanding and awareness to architectural feature of the invention and the effect reached, to preferably Embodiment and accompanying drawing coordinate detailed description, are described as follows：

As shown in Figure 1 and 2, the motor lead-out wire structure with water-proof function, including end cap 100, the first lead 300, the second lead 400th, end cap draws string holes 101, encapsulation cavity 200, sealed protective cover 500；The encapsulation cavity 200 is provided with the end cap 100；Institute State the first lead 300 and second lead 400 is drawn in motor, and first lead 300 and second lead 400 By the encapsulation cavity 200 and draw string holes 101 from the end cap and lead to outside motor；The end cap is drawn in string holes 101 Provided with the sealed protective cover 500；First lead 300 and second lead 400 are all by outside insulating barrier and interior The wire in portion is constituted.

The first peeling section 301, described the are offered on one section that first lead 300 is located in the encapsulation cavity 200 The second peeling section 401 is offered on one section that two leads 400 are located in the encapsulation cavity 200；Wherein described first peeling section 301 All it is finally to make the wire of inside exposed by the insulating barrier outside removal with the described second peeling section 401, last described first It is all by sealant pouring and sealing, wherein described first goes in the encapsulation cavity 200 to remove the peel section 301 and the second peeling section 401 Respectively all by sealant pouring and sealing at the both ends open of skin section 301 and the second peeling section 401, because the sealing of encapsulating is good, So being intimately associated to have blocked passing through for moisture between encapsulating and wire, there is moisture to enter by damaged insulating barrier in contingency Under conductive wire scenario, the effect of casting glue has been effectively blocked first lead-out wire 300 and the insulating barrier of the second lead-out wire 400 The continuation of moisture moves ahead between wire, so that the motor for avoiding leak and causing is burnt out.

The sealed protective cover 500 includes necking 501, connecting portion 502, fillet 503, incoming line 504；The necking 501 Located at the upper end of connecting portion 502, the incoming line 504 is located at the lower end of connecting portion 502, the connecting portion 502 and described Incoming line 504 is connected by the fillet 503, wherein the material therefor of the sealed protective cover 500 is highly elastic material.The contracting The diameter of mouth 501 sets the diameter sum less than first lead-out wire 300 and second lead-out wire 400, due to the contracting Mouth 501 is high resiliency, and the tension force of the necking 501 can be effectively to first lead-out wire 300 and second lead-out wire 400 are closely sealed；Wherein described fillet 503 is also highly elastic material, serves cushioning effect, is drawn a certain degree of In the range of stretching and shortening, the fillet 503 arbitrarily can be stretched or shortened.The diameter of incoming line 504 is less than described simultaneously The diameter sum of first lead-out wire 300 and second lead-out wire 400, specifically, first lead-out wire 300 and described second Lead-out wire 400 is penetrated from the incoming line 504, is passed from the necking 501, the elastic necking 501 of sealed protective cover 500 Design with the elastic incoming line 504 causes outside moisture to cannot be introduced into motor internal, improves the waterproof sealing of motor Effect.

Beneficial effects of the present invention are：（1）Moisture can not pass through the first peeling section or the second peeling section and filling in the present invention Seal chamber and enter motor internal, it is to avoid the entrance of moisture causes the accidents such as electric motor short circuit；（2）Sealed protective cover elasticity necking is set Meter causes outside moisture to cannot be introduced into motor internal, improves the waterproof sealing effect of motor.

It should be understood by those skilled in the art that, the present invention is not limited to the above embodiments, above-described embodiment and explanation The principle of the simply present invention described in book, it is of the invention without departing from the spirit and scope of the present invention also to have various changes Change and improve, these changes and improvements are both fallen within the range of claimed invention.The protection domain of application claims by Appended claims and its equivalent are defined.

Claims (2)

1. the motor lead-out wire structure with water-proof function, it is characterised in that：Including end cap, the first lead, the second lead, end cap Draw string holes, encapsulation cavity, sealed protective cover；The encapsulation cavity is provided with the end cap；First lead and described second draws Line is drawn in motor, and first lead and second lead by the encapsulation cavity and draw string holes from the end cap Lead to outside motor；The end cap draws string holes and is provided with the sealed protective cover；

The first peeling section is offered on one section that first lead is located in the encapsulation cavity, second lead is located at described The second peeling section is offered on one section in encapsulation cavity；The sealed protective cover includes necking, connecting portion, fillet, incoming line；Institute Necking is stated located at the connecting portion upper end, the incoming line is located at the connecting portion lower end, the connecting portion and the incoming line Connected by the fillet.

2. the motor lead-out wire structure according to claim 1 with water-proof function, it is characterised in that：The sealing protection Set material therefor is highly elastic material.