CN203607804U

CN203607804U - Waterproof explosion-proof flexible connecting pipe with own sealing mechanism

Info

Publication number: CN203607804U
Application number: CN201320703746.XU
Authority: CN
Inventors: 刘庆波
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-08
Filing date: 2013-11-08
Publication date: 2014-05-21
Anticipated expiration: 2023-11-08

Abstract

The utility model discloses a waterproof explosion-proof flexible connecting pipe with an own sealing mechanism; the connecting pipe comprises a pipe body, and an inlet loop joint and an outlet loop joint arranged on two ends of the pipe body; the inlet loop joint and the outlet loop joint at least have a radial sealing surface; the inlet loop joint or the outlet loop joint is provided with at least one strip-shaped pipe sealing pad; the strip-shaped pipe sealing pad comprises a radial pad in butt joint with the radial sealing surface in a sealing manner, and a flexible pipe coaxially arranged with the radial pad and fixed with the radial pad in a sealing manner. The waterproof explosion-proof flexible connecting pipe with the own sealing mechanism breaks a conventional thinking mode; the strip-shaped pipe sealing pad with a stereo structure is arranged in the flexible connecting pipe, thereby developing the sealing pad from a planar space to a stereo space; the sealing pad is strong in stereo sense; the flexible pipe is vertically pulled out from a plane surface, is telescopic, thereby realizing omnibearing sealing for the radial and axial directions of the cable.

Description

Carry the waterproof anti-explosion flexible connection pipe of sealing mechanism

Technical field

The utility model belongs to power cable equipment design field, specifically relates to a kind of waterproof anti-explosion flexible connection pipe that carries sealing mechanism.

Background technology

Explosion-proof flexible connection pipe has another name called explosion-proof flexible pipe, is applicable to IIB, IIC level T1-T6 and organizes atmosphere existing explosive mixtures, connects or the connect up use of the larger place connection of bending difficulty of steel pipe as the line of electrical apparatus for explosive atmospheres.Explosion-proof flexible pipe is by body and be arranged on the metal threaded articulation in body two ends and form.Body portion mostly is the rubber tube of interior metal-containing layer.

In industrial production, cable out will enter electric, instrumentation and generally all adopts three unit protections from converging wire casing; 1, adopt metal penetration pipe (galvanized pipe), cable is carried out to breakage-proof, insolation proof, anti-corrosion protection.2, adopt in cable sealing device (claim again stuffing-box, sealing contain) prevents that rainwater and gas from entering electric, instrumentation along cable surface.3, between metal penetration pipe (galvanized pipe) and sealing device (stuffing-box, sealing culvert), there is a relative softness, convenient bending, the flexible connection pipe that reverses and move, it is the continuity of metal penetration pipe.

Existing flexible connection pipe is root hollow pipe, and centre is the flexible hose of a quality of rubber materials, and there is metal threaded joint at two ends, and cable is through wherein, and flexible connection pipe is rainwater, sunlight, dust, and corrosive gas intercepts outside.Because its inside is a hollow pipe, installation site is relatively low, all-pervasive rainwater and flammable, etchant gas can, by the joint, the piping failure place that have become flexible, not have in the infiltration pipelines such as the halfway junction box of good seal and hoard and flow, thereby enter inside electric appliance.Therefore metal penetration pipe, flexible connection pipe only play breakage-proof, anti-dust, insolation proof, etch-proof effect to cable, cannot stop that liquefied gas in inflow pipe enters electrical instrumentation and really plays waterproof, explosion prevention function.

For solving the problems of the technologies described above, publication number is that the patent documentation of CN2918941Y discloses a kind of explosion-proof antiseptic flexible connecting pipe, comprise metal tube, anti-corrosion pipe, be provided with anti-corrosion pipe outward at metal tube, one end at metal tube is provided with nipple successively, male connection, the other end at metal tube is provided with nipple successively, female adapter, leadwork pad is being installed between male connection and nipple and between female adapter and nipple, skin in male connection and nipple and female adapter and nipple joint is provided with collar nut, at anti-corrosion pipe skin, stainless steel wire woven tube is installed, the skin of stainless steel wire woven tube is fixed with clip.Than existing flexible connection pipe, the waterproof anti-explosion performance of the disclosed flexible connection pipe of above-mentioned document improves.But, said structure only considers to utilize lead gasket to carry out radial seal, and after long-term use, rainwater, flammable, toxic gas can enter into electric equipment along cable top layer in the center along flexible pipe in metal tube is infiltrated in gap, electric equipment is caused to heavy corrosion, and accident etc. is even short-circuited.

Utility model content

The utility model is not in the situation that changing cable flexibility tube connector agent structure, in the loop connector at its two ends, add the bar shaped seal of tube pad of especial manufacture, adding just as a dam of bar shaped seal of tube pad, stands in the cavity of flexible connection pipe, is keeping off flowing of rainwater.Therefore this pipe is a flexible connection pipe, again with waterproof anti-explosion sealing device, is a kind of waterproof anti-explosion flexible connection pipes that carry sealing mechanism flexible and two kinds of functions of sealing that integrate.

For solving the problems of the technologies described above, the technical scheme that the utility model provides is:

Carry a waterproof anti-explosion flexible connection pipe for sealing mechanism, comprise body and be arranged on arrival end kink joint and the port of export kink joint at body two ends, in described arrival end kink joint and port of export kink joint, at least there is a radial sealing surfaces; In described arrival end kink joint or port of export kink joint, be provided with at least one bar shaped seal of tube pad, this bar shaped seal of tube pad comprise with described radial sealing surfaces seal the radially pad that docks and with flexible pipe that radially gasket seal is fixed and coaxially arranged.

When the work of bar shaped seal of tube pad, radially pad part above it is clamped in the middle of two planes of flexible pipe kink joint, the pad clamping can effectively be kept out the outside rainwater of flexible pipe kink joint, and the erosion of corrosive gas, realizes the sealing in radial direction to cable; And flexible pipe part above it, cable is through its pipe interior, in the time that the diameter of a certain section of pipeline is slightly less than cable size, cable produces expanded support effect to the bar shaped tube wall with flexible, the flexible bar type tube wall being stretched produces a kind of elastic-restoring force to cable conversely, embed cable skin, the sealing on realization is axial to cable.In this process, except flexible bar type pipe self produces elastic-restoring force, also can bar shaped pipe be tied up, be wrapped up by outer member, the sealing on further realization is axial to cable.By bar shaped seal of tube pad being set at arrival end kink joint and port of export kink joint, while making cable pass flexible connection pipe, realize the comprehensive shutoff to rainwater, can avoid rainwater, flammable, toxic gas to enter inside electric appliance completely.

For strengthening sealing to cable, be convenient to tie up, fixing simultaneously, as preferably, described flexible pipe end is throat structure, flaring structure or bellows structure.When flexible pipe end is throat structure, can realize the sealing to multiple cross section cable not of uniform size, and not be subject to the restriction of little chi footpath cable, easily realize unit cable, the sealing of the situations such as multi-cable or cable and heart yearn combination, adaptability is very wide.Equally, when flexible pipe end is flaring structure, bellows structure, the one, be convenient to the insertion of cable and pass, the 2nd, be convenient to thick harder cable realize parcel and tie up, sealing for large cable mainly depends on environmental sealing, by outer member tie up being wrapped in flexible pipe tube wall on cable, pipe skirt section, clip and stickup, utilize the flexibility of cable skin and flexible pipe, under external force, produce embedded distortion, realize sealing.Original explosion-proof flexible connection pipe, cable is inserted into the port of export from the arrival end of flexible pipe and extracts out, be not subject to the restriction of any factor and the obstruction of object, infiltrate rainwater, the corrosive gas of penetration pipe and follow cable from inlet streams to outlet yet, finally flow into electric equipment." carrying the waterproof anti-explosion flexible connection pipe of sealing mechanism " of the present invention is because being provided with at least one bar shaped seal of tube pad in arrival end kink joint described in it or port of export kink joint, bar shaped seal of tube pad, completing after above-mentioned seal operation just as a dam, has been blocked in rainwater in its direction of advancing (axially).In arrival end kink joint, as preferably, in described arrival end kink joint and described port of export kink joint, be equipped with described flexible pipe.As further preferred, in described arrival end kink joint, being provided with flexible pipe is the bar shaped seal of tube pad of flaring structure or bellows structure; This result makes that cable is smooth and easy to be passed through, and when cable front end arrives after assigned address, with tied silk, clip, sticker mode is to being enclosed within the tube wall outside cable, and tie up in pipe skirt section, realizes the isolation to rainwater and gas and stop.In port of export kink joint, preferred as another kind, in described port of export kink joint, being provided with flexible pipe is the bar shaped seal of tube pad of throat structure or bellows structure.This is because in the port of export kink joint of flexible connection pipe, there will be a variety of special circumstances; The first, now cable faces peeling separated time, and it may be with other equipment with using common wire.The second, signal, power supply need to connect or and connect, now may increase the line of cross-over connection, the 3rd, feed cable and signal cable merge a mouth and are fed into equipment.These situations and phenomenon, often occur in installation process, and each cable is held together cross section and forms irregular periphery, and cable and cable form gap between cable and single-core line, and rainwater can flow into electric meter from gap.Existing sealing device and stuffing-box cannot address the above problem, basic reason that why often product electrical instrumentation damages that Here it is.Therefore, be badly in need of wanting a kind of device that can cross flexible variation to deal with irregular, reach the sealing effectiveness needing.Adopt the flexible pipe sealing gasket of throat structure, flaring structure, bellows structure, the gas leakage problem of leaking causing with regard to can solve above-mentioned irregular face.For example: the inwall of throat structure is close to cable surface and is produced insert seal under elastic force effect, the osculum of the penetrable front end of single-core line or blind pipe, the caoutchouc elasticity power of blind pipe wall is carried out elastic packing to single-core line, can further block gap by winding and the stickup of electrical adhesive tape.Adopt the flexible pipe of enlarging and bellows structure can be to being less than the cable of self diameter, particularly thick harder cable carries out skin parcel and gap parcel, ties up by tied silk, clip form, makes flexible pipe, flexible skin embeds between cable and between gap, thoroughly blocks rainwater and flows.

In the foregoing description, much by electrical adhesive tape to the axial seal of cable, tied silk, the power such as clip or thread gluing, these are all the strength beyond sealing device, but in real work, to the peeling of cable, parcel, tie up the work of being absolutely necessary, we transfer to this power cleverly and have applying of the flexible pipe of cable to overlapping, become sealing force, break through the narrow understanding and cognition for sealing force, performance and the expansion to sealing force, these flexible and changeable parcel forms just, the screwing force that can use everywhere, clip power, adherence force joins in sealing device, effect and the mode of power are enriched, solve cable axial seal greatest problem, effective method and means, effect is got twice the result with half the effort.

Described arrival end kink joint and port of export kink joint all can be selected existing structure, when actual installation, only need special bar shaped seal of tube cushion cover, on the appropriate location of cable, to be finally fixed.Preferred as one, described port of export kink joint comprises the port of export connection that is fixedly connected with body, be connected major part with the port of export clamping nut of port of export connection activity clamping and the port of export that is threaded successively with port of export clamping nut and the port of export connects microcephaly; The described port of export connects that major part is connected with the port of export that microcephaly's outer wall is equipped with external screw thread, the also cap that coordinates with external screw thread and with positioning boss that also cap coordinates.

Described arrival end kink joint also can be selected and described port of export kink joint similar structures, now, as preferably, described arrival end kink joint comprises the arrival end connection that is fixedly connected with body, be connected major part with the arrival end clamping nut of arrival end connection activity clamping and the arrival end that is threaded successively with arrival end clamping nut and arrival end connects microcephaly; Described arrival end connects that major part is connected with arrival end that microcephaly's outer wall is equipped with external screw thread, the also cap that coordinates with external screw thread and with positioning boss that also cap coordinates.

As preferably, in described port of export clamping nut or arrival end clamping nut, be provided with the first internal thread and the first sealing platform of the external screw thread cooperation that is connected major part or arrival end connection major part with the port of export, between the end of described port of export connection major part or arrival end connection major part and described the first sealing platform, form described radial sealing surfaces, be defined as primary sealing area.

Preferred as one, the described port of export connects external screw thread that microcephaly or arrival end connect microcephaly and is arranged on the both sides of its positioning boss, the port of export connect microcephaly or arrival end connect on microcephaly and cap be arranged on and connect large or arrival end away from the port of export and connect on the external screw thread of large first side.

Preferred as one, the described port of export connects major part or arrival end connects the second internal thread that is provided with the external screw thread cooperation that is connected microcephaly or arrival end connection microcephaly with the described port of export in major part, in described port of export connection major part or arrival end connection major part, be provided with the second sealing platform, this the second sealing platform is connected microcephaly or arrival end connection microcephaly end with the port of export forms described radial sealing surfaces, is defined as secondary sealing area.

Preferred as another kind, in described port of export connection major part or arrival end connection major part, be provided with the 3rd internal thread, the 3rd and seal platform and the screw pressure ring with the 3rd screw-internal thread fit, between described the 3rd sealing platform and screw pressure ring, form described radial sealing surfaces, be defined as the 3rd sealing surface.

As further preferred, described screw pressure ring center is cable aperture, and outer wall is processed with screw thread, this screw thread and the 3rd screw-internal thread fit, and screw pressure ring one end forms the 3rd described sealing surface, and other end end face is provided with driver flutes.Driver flutes is to be convenient to screw pressure ring to screw in and connect major part inner chamber, and bar shaped seal of tube pad is pressed on the 3rd sealing platform, between the 3rd sealing platform and screw pressure ring, forms the 3rd sealing surface.

Having on the electrical instrumentation of hickey during when flexible pipe is come into operation, can be first twist into one screw-in electric equipment hickey (also major part and microcephaly can be processed as one under normal circumstances) by connecting major part and being connected microcephaly, then grip has the cable of bar shaped seal of tube pad to insert its centre bore, enter electric equipment, this connection is that flexible pipe is threaded.In actual life, the connector simplicity of design of a lot of electric equipments does not have helicitic texture, have, on flat rack, to open a line-entering hole, have plenty of and in terminal box side walls, open a line-entering hole, for this kind of situation, the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present invention, prepare and cap, utilize and connect major part and also cap, the positioning boss structure that are connected microcephaly's outer wall, separately add that a pad is pressed in the dull and stereotyped connecting hole of the said equipment by the sealing surface that also cap and positioning boss form, this connection is and cap connects.

Connecting the primary sealing area forming between major part end and connection is the main sealing station that bar shaped seal of tube pad is laid in flexible connection pipe, and the radially pad of bar shaped seal of tube pad is placed in this sealing surface, realizes radial seal; Flexible pipe part is enclosed within on cable, realizes axial seal, and the same manner is just the same when the radial seal pad of bar shaped seal of tube pad is placed in second and third sealing surface role and effect and is placed in primary sealing area.With respect to primary sealing area, second and third sealing surface face area is less.To the sealing of Yu Haiyang and deep-sea cable, people can emphasize to increase radial seal pad number and guarantee that seawater can be from radially not infiltrating, and needing has multiple tracks radial sealing surfaces to coordinate in joint.If select two radially bar shaped seal of tube pads of pad, two radially pad be placed in respectively first and second or second and the 3rd sealing surface, select like this, increased the intensity of sealing gasket, make it safety and reliability diametrically.For common use occasion, use primary sealing area to be just enough to reach sealing effectiveness, second and three seals face needn't retain.Preferred as another kind, in described connection major part, be provided with the 3rd internal thread, the 3rd sealing platform, its structure is actual is " hickey " of a built-in sealing table top.This " hickey " decapacitation is held outside its inner chamber of screw pressure ring precession, can also accept the screw-in of other transition joint, the similar convex joint as foregoing in us of transition joint and straight type joint, its one end is threaded in " hickey " inner chamber, the other end is accepted being screwed into of clamping nut (overall dimension that connects straight type joint and need to change clamping nut, makes itself and " hickey " consistent size).Non-Special use occasion, the 3rd internal thread and three seals face needn't retain, and can reduce the processing to thread in inner cavity and sealing platform in the major part of described port of export kink joint.Therefore,, at non-special occasions, outlet looping joint can be reduced to the existing convex joint that only includes coaxial setting and be integrated by the fixing connection of engage thread, clamping nut and major part, microcephaly, and cap also can configure according to actual installation demand.

Bar shaped seal of tube pad can be arranged in port of export kink joint, also can be arranged in arrival end kink joint, and also two ends all arrange simultaneously.In a flexible connection pipe, can be to select one to the radially pad of bar shaped seal of tube pad, also select two or more, but need to have sealing surface supporting with it.Different environments for use is selected different hermetically-sealed constructions and bar shaped pipe pad sheet.

Flexible pipe on bar shaped seal of tube pad, presents strip, multiple clips that can come into operation on its strip tubulose, and band, sealing adhesive plaster, realizes multi-stage sealed.

In the utility model, in bar shaped seal of tube pad, radially pad can arrange multiple as required.Flexible pipe can be arranged on radially a side or the both sides of pad.Flexible pipe and radially between pad, can select to be wholely set also can adopt other sealing fixed form, the methods such as such as screw thread, cutting ferrule, viscose glue, pyrocondensation and self elastic force interfix.

Radially pad of the present utility model can be the conformation of rules such as square, round, ellipse, triangle.Flexible pipe can be round tube, four directions pipe, rectangle pipe, triangular form pipe, the conformation of rules such as ellipse pipe; Also be processed to by flexible material the extrinsic form body that bar shaped tubular body (as rubber peel, plastic skin, cloth, fire-proof and water-proof cloth etc.) is made with pad seamless link radially.

Radially pad material of the present utility model can be materials such as metal, plastics, rubber (containing silica gel and latex) etc. and their conjugant.Flexible pipe can adopt rubber peel, Polypropylence Sheet, being connected of fire-proof and water-proof cloth etc. and they.Gasket seal of the present utility model, can be to its number of pads radially, radially pad chi footpath, and axial flexible pipe length is pruned, is cut, to adapt to on-the-spot needs.

Compared with prior art, the beneficial effects of the utility model are embodied in:

(1) the utility model is broken through thoughtcast, the bar shaped seal of tube pad of stereochemical structure is set in flexible connection pipe, sealing gasket is developed to solid space from plane space, make the third dimension of sealing gasket strong, a flexible pipe line of vertical pull-out from plane, changeable, realize the radial and axial comprehensive sealing to cable.

(2) the utility model to arrival end kink joint or/and port of export kink joint design improve, both can be used in the electric equipment of screw thread connection jaws, also can be used in the electric equipment without screw thread connection jaws, not need to change flexible connection pipe, practicality strengthens.

(3) the utility model arranges the radial sealing surfaces of various structures in port of export kink joint and arrival end kink joint, can realize single track sealing, also can realize multiple-sealed, make flexible connection pipe of the present utility model can be used for common wiring occasion, also can be used in the occasion that the sealing requirements such as seabed are higher, applicability is wider.

(4) the utility model is broken sealing force only from the intrinsic notion of device itself, rationally understands and uses external strength, and flexible pipe end is set to throat structure, and internal force, external force are combined, and realizes the waterproof anti-explosion sealing to cable.

(5) the utility model is widened the form that internal force produces, from only having developed into elastic-restoring force, pyrocondensation power etc. by screw thread power; Easy for installation, be not subject to the restriction of installation position, all can accomplish waterproof anti-explosion sealing.

(6) the utility model, by the sealing of traditional one side single-point, is expanded as multiple spot multidimensional seal, can adjust according to actual needs the radially length of number of pads and flexible pipe.

(7) sealing gasket of the present utility model, can adopt multiple radially pads and flexible pipe combination, and flexible pipe can be pruned, and easily forms various product, simplification device structure; And can meet the use occasion of various sealing class requirements.

(8) the utility model adopts flexible pipe and the integrative-structure that radially pad combines, and in utilizing radially pad radial seal, has also utilized flexibility and the compressibility of cable skin, further realizes the axial sealing of cable.

(9) sealing gasket overall structure of the present utility model is simple, processing method is flexible and changeable: can adopt radially pad and flexible pipe to make separately, radially pad is as the common plane pad, as long as have a radial sealing surfaces and axial location ring, when actual use, can the on-the-spot length of cutting flexible pipe as required, on-the-spot install fixing; Also can be directly radially pad and flexible pipe one be processed, on-the-spotly directly use, do not need special equipment to process.

Accompanying drawing explanation

Fig. 1 is the structural representation of existing flexible connection pipe.

Fig. 2 is the structural representation of the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

A kind of improvement project figure of flexible connection pipe shown in Fig. 3 Fig. 2.

Fig. 4 is the partial enlarged drawing that Fig. 3 middle outlet end connects major part.

Fig. 5 is that the one of flexible connection pipe shown in Fig. 3 is used state diagram.

Fig. 6 is the structural representation of a kind of execution mode of bar shaped seal of tube pad in the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

Fig. 7 is the structural representation of the second execution mode of bar shaped seal of tube pad in the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

Fig. 8 is that the one of the pad of the bar shaped seal of tube shown in Fig. 7 is used structure graph.

Fig. 9 is the structural representation of the third execution mode of bar shaped seal of tube pad in the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

Figure 10 is the structural representation of the 4th kind of execution mode of bar shaped seal of tube pad in the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

Figure 11 is the structural representation of the 5th kind of execution mode of bar shaped seal of tube pad in the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

Figure 12 is a kind of mounting means figure when bar shaped seal of tube pad seals shown in employing Fig. 9.

Figure 13 is another kind of mounting means figure when bar shaped seal of tube pad seals shown in employing Fig. 9.

Figure 14 is the structural representation of the 6th kind of execution mode of bar shaped seal of tube pad in the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

Figure 15 is the structural representation of the 7th kind of execution mode of bar shaped seal of tube pad in the waterproof anti-explosion flexible connection pipe that carries sealing mechanism of the present utility model.

Embodiment

As shown in Figure 1, be the structural representation of existing flexible connection pipe, comprising: the terminal box 105 of metal tube 101, arrival end kink joint 102, body 103, port of export kink joint 104 and electrical instrumentation.When actual installation, utilize arrival end kink joint 102 and metal tube 101 to interfix, utilize port of export kink joint 104 and the screw thread connection jaws of terminal box 105 to interfix, O sealing rubber ring may be housed for sealing in the screw thread connection jaws of terminal box 105.

Fig. 2 is a kind of improvement project structure chart of the present utility model: a kind of waterproof anti-explosion flexible connection pipe that carries sealing mechanism, comprise body 201 and be arranged on arrival end kink joint 202 and the port of export kink joint 203 at body 201 two ends, in arrival end kink joint 202 and port of export kink joint 203, at least there is a radial sealing surfaces; In arrival end kink joint 202 or port of export kink joint 203, be provided with at least one bar shaped seal of tube pad 204, carry out again detailed description after the concrete structure of bar shaped seal of tube pad.

Fig. 3 is to Fig. 2 middle outlet end kink joint 203 improved a kind of schemes: a kind of waterproof anti-explosion flexible connection pipe that carries sealing mechanism, comprises equally body 201 and be arranged on arrival end kink joint 202 and the port of export kink joint 203 at body 201 two ends.

Fig. 4 is the partial enlarged drawing of port of export kink joint 203, and the port of export connection 401, port of export clamping nut 412, the port of export that comprise coaxial setting and fix successively by engage thread connect major part 402 and be connected microcephaly 403 with the port of export; Port of export connection 401 is fixedly connected with body 201 simultaneously; The port of export connect major part 402 outer walls be provided with external screw thread 404, coordinates with external screw thread and cap 405 and positioning boss 406 that also cap 405 coordinates, and between cap 405 and positioning boss 406, form one and engage.The port of export connect microcephaly 403 outer walls be provided with external screw thread 407, coordinate with external screw thread 407 and cap 408 and and the positioning boss 409 that coordinates of cap 408, and between cap 408 and positioning boss 409, form another and engage.In port of export clamping nut 412, be provided with the first internal thread 410 and the first sealing platform, this first internal thread 410 is connected major part 402 outer walls external screw thread 404 with the port of export cooperatively interacts, and the port of export connects major part 402 with forming primary sealing area 400 between the sealing of first in externally threaded end and port of export connection 401 platform.Port of export connection microcephaly's 403 external screw thread is arranged on the both sides of its positioning boss 409, and cap 408 arranges on the external screw thread 407 away from port of export connection major part 402 1 sides.The port of export connects the second internal thread 411 that is provided with the external screw thread cooperation that is connected microcephaly 403 with the port of export in major part 402, in port of export connection major part 402, is provided with the second sealing platform, this second end formation secondary sealing area 413 that seals platform and be connected microcephaly.The port of export connects the screw pressure ring that is provided with the 3rd internal thread 415, the 3rd sealing platform and coordinates with the 3rd internal thread 415 in major part 402, between the 3rd sealing platform and screw pressure ring, forms the 3rd sealing surface 416.Screw pressure ring can change into the transition joint such as convex and straight type.Screw pressure ring center is cable aperture, and outer wall is processed with screw thread, and this screw thread coordinates with the 3rd internal thread 415, and screw pressure ring one end forms the 3rd sealing surface 416, and other end end face is provided with driver flutes.Port of export connection microcephaly 403 screws in the hickey of electric equipment, forms the 4th radial sealing surfaces 414 with sealing platform built-in in hickey.

Arrival end kink joint 202 can be selected the structure of prior art as required, or also can adopt the structure identical or similar with above-mentioned port of export kink joint 203, all belongs to the preferred version under the utility model design.

Take port of export kink joint 203 as example, as shown in Figure 2 and Figure 5, above-mentioned joint is according to applicable situation difference, can suitably adjust mounting means, for example: when using in the time having the electric equipment of connection jaws of helicitic texture, as shown in Figure 2, can be by port of export connection 401, be enclosed within the port of export clamping nut 412 on port of export connection, after the port of export connects major part 402 and is connected the mutual screw thread of microcephaly 403 with the port of export and fixes, connect microcephaly's external screw thread 407 and the connection jaws of electric equipment interfixes by the port of export.Now also the port of export can be connected to major part 402 is connected microcephaly 403 and is processed into integrative-structure with the port of export.When using in the time there is no the electric equipment of screw thread connection jaws, as shown in Figure 5, can connect terminal box 501 outer walls major part outer wall and cap 405 and positioning boss 406 structures and electric equipment by the port of export and be fixed, strengthen sealing.The port of export connects major part and is connected small head external diameter difference with the port of export, can select to connect major part or port of export connection microcephaly and terminal box by the port of export according to the size of physical cabling box preformed hole and mutually be fixed.

Can at arrival end kink joint 202 or port of export kink joint 203, one or more bar shaped seal of tube pad be set as required.While adopting multiple bar shaped seal of tube pad, its radially pad can select to cooperatively interact with two or more the sealing surface in primary sealing area, secondary sealing area, the 3rd sealing surface or the 4th sealing surface.

If Fig. 6-15 are the structural representation of the typical several bar shaped seal of tube pads of the utility model:

As Fig. 6, bar shaped seal of tube pad of the present utility model comprises the flexible pipe 602 of pad 601 radially and and coaxial setting fixing with gasket seal 601 radially.Flexible pipe 602 ends are throat structure and sealing.When actual installation, flexible pipe 602 is generally fixed on cable outer wall by structures such as snap close 603, insulating cements 604.This bar shaped seal of tube pad can be fixed in any radial sealing surfaces on port of export kink joint (in the first radial sealing surfaces, the second radial sealing surfaces, the 3rd radial sealing surfaces and the 4th radial sealing surfaces one).

As shown in Figure 7, group portion's structure also can be selected in flexible pipe 602 ends, is equaled cable outer wall and is interfixed by rope-like constructed 701 or thread gluing, adhesive tape.On the flexible pipe 602 of group portion structure, can arrange as required and be convenient to wrap up, tie up the breach of sealing etc.As shown in Figure 8, can adopt this group of portion's structures to seal arrival end kink joint 202.Now bar shaped seal of tube pad 204 is fixed between the primary and secondary joint of arrival end kink joint 202.

As shown in Fig. 9-11, flexible pipe 602 can be arranged on radially pad 601 both sides, and a side is throat structure, and opposite side is cylindrical-shaped structure.Throat structure end-enclosed.Cylindrical-shaped structure end is provided with reinforcing ring.Flexible pipe 602 also can adopt the isometrical bellows structure of left end in Figure 10, also can reducing but the structure of not sealing.Flexible pipe 602 and radially can select and be wholely set between pad 601, as shown in Figure 9 and Figure 10, also can adopt by modes such as bonding, screw threads and interfix, example as shown in figure 11, can be as required in Figure 11 in pad 601 both sides radially, connection bulge loop be set, for flexible pipe and interfixing of pad radially.While adopting the execution mode of Figure 11, can on-the-spotly according to actual needs carry out cutting to the length of flexible pipe.

Figure 12, Figure 13 are two kinds of mounting means figure when bar shaped seal of tube pad seals shown in employing Fig. 9, and Figure 12 peels cable sheath off, directly utilizes flexible pipe to seal heart yearn.Figure 13 utilizes flexible pipe directly and cable sheath sealing.In Fig. 2, be the structural representation of this structure during for flexible connection pipe of the present utility model.

In Figure 14, radially pad can arrange one or more as required.Respectively with Fig. 4 in radial sealing surfaces mutually seal.

In Figure 15, flexible pipe 602 adopts the diminishing nipple-like of internal diameter, structure.Now, diminishing internal diameter part can be inserted in the inner chamber that connects major part 402.

In above-mentioned execution mode, radially pad material can be materials such as metal, plastics, rubber (containing silica gel and latex) etc. and their conjugant.Flexible pipe can adopt rubber peel, Polypropylence Sheet, being connected of fire-proof and water-proof cloth etc. and they.The material that flexible pipe is selected can be identical or different, and contour structures also can be selected the conformation of rules such as round tube, four directions pipe, rectangle pipe, triangular form pipe, ellipse pipe, or other are irregularly shaped.Radially pad can be selected common rubber sheet gasket, also can select material and their conjugants such as metal, plastics, rubber (containing silica gel and latex).Radially pad can be the conformation of rules such as square, round, ellipse, triangle.

Claims

1. one kind carries the waterproof anti-explosion flexible connection pipe of sealing mechanism, comprise body (201) and be arranged on arrival end kink joint (202) and the port of export kink joint (203) at body (201) two ends, it is characterized in that, in described arrival end kink joint (202) and port of export kink joint, (203) at least have a radial sealing surfaces; In described arrival end kink joint (202) or port of export kink joint (203), be provided with at least one bar shaped seal of tube pad (204), this bar shaped seal of tube pad comprise with described radial sealing surfaces seal the radially pad (601) that docks and with flexible pipe (602) that radially gasket seal is fixed and coaxially arranged.

2. the waterproof anti-explosion flexible connection pipe that carries sealing mechanism according to claim 1, is characterized in that, described flexible pipe (602) is throat structure, flaring structure or bellows structure.

3. the waterproof anti-explosion flexible connection pipe that carries sealing mechanism according to claim 2, is characterized in that, in described arrival end kink joint (202) and described port of export kink joint (203), is equipped with described flexible pipe (602).

4. the waterproof anti-explosion flexible connection pipe that carries sealing mechanism according to claim 3, it is characterized in that, described port of export kink joint (203) comprises that the port of export connection (401) being fixedly connected with body (201), the port of export being threaded successively with the port of export clamping nut (412) of port of export connection (401) activity clamping and with port of export clamping nut (412) are connected major part (402) and the port of export connects microcephaly (403); The described port of export connects that major part (402) is connected with the port of export that microcephaly (403) outer wall is equipped with external screw thread, the also cap that coordinates with external screw thread and with positioning boss that also cap coordinates.

5. the waterproof anti-explosion flexible connection pipe that carries sealing mechanism according to claim 3, it is characterized in that, described arrival end kink joint (202) comprises the arrival end connection that is fixedly connected with body (201), be connected major part with the arrival end clamping nut of arrival end connection activity clamping and the arrival end that is threaded successively with arrival end clamping nut and arrival end connects microcephaly; Described arrival end connects that major part is connected with arrival end that microcephaly's outer wall is equipped with external screw thread, the also cap that coordinates with external screw thread and with positioning boss that also cap coordinates.

6. according to the waterproof anti-explosion flexible connection pipe that carries sealing mechanism described in claim 4 or 5, it is characterized in that, in described port of export clamping nut (412) or arrival end clamping nut, be provided with the first internal thread (410) and the first sealing platform of the external screw thread cooperation that is connected major part (402) or arrival end connection major part with the port of export, between the end of described port of export connection major part or arrival end connection major part and described the first sealing platform, form described radial sealing surfaces, be defined as primary sealing area (400).

7. according to the waterproof anti-explosion flexible connection pipe that carries sealing mechanism described in claim 4 or 5, it is characterized in that, described port of export connection microcephaly (403) or arrival end connection microcephaly's external screw thread is arranged on the both sides of its positioning boss, and the also cap that the port of export connects on microcephaly (403) or arrival end connection microcephaly is arranged on the external screw thread away from port of export connection major part (402) or the large first side of arrival end connection.

8. according to the waterproof anti-explosion flexible connection pipe that carries sealing mechanism described in claim 4 or 5, it is characterized in that, the described port of export connects major part (402) or arrival end connects the second internal thread (411) that is provided with the external screw thread cooperation that is connected microcephaly (403) or arrival end connection microcephaly with the described port of export in major part, in described port of export connection major part (402) or arrival end connection major part, be provided with the second sealing platform, this the second sealing platform is connected microcephaly (403) or arrival end connection microcephaly end with the port of export forms described radial sealing surfaces, be defined as secondary sealing area (413).

9. according to the waterproof anti-explosion flexible connection pipe that carries sealing mechanism described in claim 4 or 5, it is characterized in that, in described port of export connection major part (402) or arrival end connection major part, be provided with the 3rd internal thread (415), the 3rd and seal platform and the screw pressure ring with the 3rd screw-internal thread fit, between described the 3rd sealing platform and screw pressure ring, form described radial sealing surfaces, be defined as the 3rd sealing surface (416).

10. the waterproof anti-explosion flexible connection pipe that carries sealing mechanism according to claim 9, it is characterized in that, described screw pressure ring center is cable aperture, outer wall is processed with screw thread, this screw thread coordinates with the 3rd internal thread (415), screw pressure ring one end forms the 3rd described sealing surface (416), and other end end face is provided with driver flutes.