CN105977898A - Fireproof explosion-proof combination structure at power cable joint of electric power system and application method - Google Patents
Fireproof explosion-proof combination structure at power cable joint of electric power system and application method Download PDFInfo
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- CN105977898A CN105977898A CN201610401849.9A CN201610401849A CN105977898A CN 105977898 A CN105977898 A CN 105977898A CN 201610401849 A CN201610401849 A CN 201610401849A CN 105977898 A CN105977898 A CN 105977898A
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- 238000000034 method Methods 0.000 title abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 71
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003292 glue Substances 0.000 claims abstract description 11
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 10
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims description 42
- 239000005060 rubber Substances 0.000 claims description 42
- 230000007704 transition Effects 0.000 claims description 16
- 210000005056 cell body Anatomy 0.000 claims description 10
- 238000005304 joining Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 210000003437 trachea Anatomy 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 239000010410 layer Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004079 fireproofing Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
Landscapes
- Building Environments (AREA)
- Installation Of Indoor Wiring (AREA)
Abstract
The invention discloses a fireproof explosion-proof combination structure at a power cable joint of an electric power system and an application method, belonging to the power cable connector fireproof explosion-proof combination structure. The fireproof explosion-proof combination structure at the power cable joint of the electric power system comprises an outer box body with double sealing structures on a longitudinal assembling surface, an assembling end cap which adopts an embedding sealing structure with the outer box body and a plugging board and a sealing member which seal a gap between related fitting surfaces of a cable annular surface and an assembling end cap, wherein the plugging board and the sealing member are arranged on the assembling end cap; the outer box is provided with a glue injection tube and an exhaust pipe are arranged on the outer box; the cable is fully wrapped by a power cable fireproof pack after connected to a middle connector and is arranged in the outer box; and fireproof sealing glue is injected to the outer box through the glue injection tube. In operation, air in the outer box is discharged through carbon dioxide or nitrogen and the fireproof sealing glue is injected inside the outer box and then high pressure shape forming is performed. The pressure maintaining shape forming is performed on the fireproof sealing glue by virtue of the outer box. The fireproof explosion-proof combination structure at the power cable joint realizes sealing protection on the cable connector, forms a compact filling layer on the periphery of the middle connector, solves a problem that durability and reliability of the fireproof performance are not good, and is low in manufacture cost and easy to promote.
Description
Technical field
The present invention relates to the fire-proof and explosion-proof technical field of power system cable intermediate joint, be specifically related to for one
Plant fire-proof and explosion-proof combinative structure and using method thereof at power system cable connector.
Background technology
Along with improving constantly of urban electric power line cord degree, cable fault rate is also the most soaring.
Operating experience confirms, the cable fault of more than 80% is relevant with cable accessory, and cable intermediate joint fault is then
In cable accessory, fault rate is the highest.Owing to the quality of cable intermediate joint own and mounting process exist flaw,
Cable intermediate joint once explodes, often shot-firing cable body, even destroys the adjacent cable of surrounding,
Causing huge loss to power system, therefore the fire-proof and explosion-proof measure of cable intermediate joint is that cable runs
The most important thing in maintenance work.
Generally use armored cassette device as safeguard procedures at intermediate joint of electric cable at present.Tradition is explosion-proof
Box is typically buckled together by aphlogistic two double-deck semicylinders and forms, and at the interlayer of two-layer housing
, once there is cable intermediate joint short circuit or blast in interior filling fire proofing, and inner shell ftractures rapidly, internal
The fire proofing filled flows out and wraps up whole cable connector in time, thus reaches fireproof purpose.Additionally,
The fire proofing being solid granular filled in existing cable armored cassette, the effect of packing material is
Absorb buffering ripple, blocking-up flame transmission that blast produces.
Armored cassette is the highest to the sealing property requirement of box body during using.Cable intermediate joint is as operation
The cable accessory that life requirements is higher, long-play will be greatly reduced the sealing of armored cassette so that it is loses
Going fire protecting performance, the probability producing potential safety hazard is the biggest.
Analyze the ignition cause of cable, predominantly except own bad connection at cable connector, easily cause office
Outside portion is overheated, the most also because cable is by causing junction resistance to increase further after Oxidation, draw
Play accumulation of heat to accelerate, again promote Oxidation, the most again accelerated heat accumulation, thus cause cable
Burning, if there are a large amount of gatherings of fuel gas in surrounding, also can be with explosion phenomenon.Except
This cause outside the overheated ignition issues caused of local heating because of oxidation for a long time, make moist at cable connector or
It is also a kind of common cause causing cable to catch fire and exploding that person's immersion causes short circuit.
Summary of the invention
The best the lacking of persistency is there is for the existing fire-proof and explosion-proof safeguard procedures of power system cable intermediate joint
Falling into, the present invention proposes fire-proof and explosion-proof combinative structure and using method thereof at a kind of power system cable connector,
It is for causing the main cause of cable fire, fundamentally to carrying out flame-proof explosion-proof process at cable connector,
Can still keep reliable fire-proof and explosion-proof property after long-play uses, significantly reduce what cable fire caused
Potential safety hazard, and low cost of manufacture, be conducive to being widely popularized.
The present invention solves its technical problem and is adopted the technical scheme that:
Fire-proof and explosion-proof combinative structure at a kind of power system cable connector, outside by the outer box of upper half and lower half
Box fasten outter box, be connected to the assembling end cap of outter box left and right two-port and be arranged on assembling
Plate on end cap and sealing member.
The outer box of upper half, the outer box of lower half:
The outer box of described upper half, the outer box of lower half arrange corresponding type groove, and divides in type groove port both sides
Axially extended flange is not set；The lower surface of the flange of the outer box of upper half arranges sawtooth profile in inner side
One；Accordingly, the upper surface of the flange of the outer box of lower half arranges sawtooth profile two in inner side.
After the outer box of described upper half, lower half outer box fastening, two profiles of sawtooth profile one and sawtooth profile contact and join
Close, and the outer box of upper half box outer with lower half is connected by the bolt being arranged on flange；Top at the outer box of upper half
Injected rubber hose and exhaustor are set on wall.
Assembling end cap:
Described assembling end cap is provided with axial cylindrical chamber, its inner rounded cylinder of section, circular cylinder from
Being arranged flange by end to be connected with outter box, the inner side of flange outer face sets annular boss, corresponding on outter box
Annular boss sets the cell body being embedded with sealing ring；The outer end section of assembling end cap is square cylinder, in square column
The port of body arranges collar flange that is internal towards assembling end cap cylindrical chamber and that extend in a radial direction.
Respectively on the upper and lower end face of assembling end cap square cylinder part, vertically opposite bar shaped is set
Groove connects with the cylindrical chamber of assembling end cap, and the flute length direction of bar shaped groove is along the radial direction of assembling end cap；?
On the outer face of collar flange, corresponding the vertical of bar shaped groove arranges lateral insert to middle part respectively, and makes
The medial wall of the inner bar shaped groove relatively of lateral insert extends certain length axially inward.
Plate:
Described plate is corresponding with lateral insert, takes therebetween profile contact matching relationship assembling；Inserting
Arrange on plate vertically to tapped through hole, when plate is assemblied in lateral insert, tapped through hole is corresponding to exist
The bar shaped groove position of assembling end cap；The tapped through hole being correspondingly arranged, is respectively provided with one and fits screw rod.
Sealing member:
Described sealing member is plate-shaped, takes profile to contact cooperation, be divided into upper semi-body between its with bar shaped groove
And lower semi-body；In the lower surface of upper semi-body and the upper surface of lower semi-body, corresponding semi-circular recesses is set,
The arc groove face of semi-circular recesses arranges embedded cushion rubber；In the lower surface of upper semi-body in semi-circular recesses
Both sides strip boss is set, and to make the lateral cross section of strip boss be downward trapezoidal of small end；Corresponding bar
Shape boss, arranges the cell body of cooperation on the upper surface of lower semi-body, arranges sealing strip in the bottom of cell body；
In the upper surface of upper semi-body of sealing member, the lower surface of lower semi-body is respectively provided with and fits the end pair of screw rod
The blind hole answered.
Cable is firmly placed in fully wrapped around for transition joint with cable fire-proof band after being connected by transition joint
In outter box, the remainder of cable is in space outerpace after assembling end cap；Sealing member is by bar shaped groove
Penetrate the outer wall of the embedded cushion rubber contact cable taking made on its semi-circular recesses, after plate is contained in lateral insert
Screw rod will be fited be arranged in tapped through hole, screw fit screw rod make to fit screw rod end insert sealing member
Blind hole in；In outter box, fireproof seal gum is injected by injected rubber hose.
Further, it is interference fit between end face and bar shaped groove before and after described sealing member, the most described sealing
The front end face of the upper semi-body of part, rear end face are from the upper and lower inclined-plane towards outer incline, the front end face of lower semi-body,
Rear end face is from bottom to top towards the inclined-plane of outer incline.
Further, described sawtooth profile one is from interior and be made up of face a2, face b2, face c2 outward, accordingly,
Sawtooth profile two is from interior and be made up of face a1, face b1, face c1 outward；Face a1 in described sawtooth profile two
Cylindrical groove is set with the joining place of face b1, in cylindrical groove, sets cylindrical seal bar and make cylindrical seal bar
Cylindrical groove at upper end opposite face a1 and face b1 is the most a part of, and to sawing by ledge
The joining place of the face a2 and face b2 of Profile of AT one arranges cylindrical groove.By outer with lower half for outer for upper half box box
After connection sawtooth profile one and sawtooth profile two completely attach to and cylindrical seal bar by complete inclusion face a1 with
In the groove that face b1, face a2 and face b2 are formed.
Further, described sawtooth profile one, sawtooth profile two are frosting.
Further, inside the roof of the outer box of described upper half, corresponding injected rubber hose sets with exhaustor position and connects deep gouge.
Further, described injected rubber hose sets external screw thread respectively with the free end of exhaustor.
Further, the upper end tube wall of described exhaustor arranges transparent observation window, and makes observation window edge
The axially extending certain length of exhaustor；The axial height of injected rubber hose is more than the axial height of exhaustor.
The installation and application of fire-proof and explosion-proof combinative structure at described power system cable connector:
1) the assembling end cap being mounted in outter box two ends is respectively interposed on two sections of cables to be connected；
2), after being connected by cable with transition joint, cable fire-proof band is re-used transition joint is fully wrapped around
Live, finally the cable part being enclosed with cable fire-proof band is placed in the outer box of lower half；
3) outer with lower half for outer for upper half box box is fixedly connected into outter box；
4) assembling end cap is fixedly connected on the two ends, left and right of outter box；
5) upper semi-body of sealing member, lower semi-body are inserted upwardly into from the upper and lower of bar shaped groove respectively, make
Embedded cushion rubber and the wall contacts of cable；Then plate is inserted in corresponding lateral insert；Finally will be tight
Close screw rod screw in plate tapped through hole to fit screw rod end insert sealing member blind hole in and to sealing
Part only forms extruding；The most embedded cushion rubber is in close contact with the outer wall of cable, and sealing member itself is squeezed
Deformation meeting tight pressing with the wall body of bar shaped groove, and ultimately form sealing structure axially, radially；
6) by injected rubber hose injecting carbon dioxide gas in outter box after the port at exhaustor installs pressure valve
Body or nitrogen, note in continuing outside box body after the air pressure inside of outter box is more than the force value of pressure valve
Enter carbon dioxide or nitrogen 5 to 10min；
7) shed the pressure valve on exhaustor port, and in outter box, filled fireproof seal gum by injected rubber hose
Certain altitude in extending to exhaustor to fireproof seal gum.
Further, injected rubber hose in outter box, inject fireproof seal gum and rise to exhaustor to fireproof seal gum
Observation window in the middle part of time, the end of exhaustor install end cover；Continue to outter box with certain high pressure
Squeeze into fireproof seal gum 1 to 3min, until the interior fireproof seal gum glue post at observation window of exhaustor is no longer
Stop when having significant change.
The invention has the beneficial effects as follows:
The present invention constitutes cage chamber by outter box, and rely on that the outer box of the outer box of upper half and lower half coordinates between face is double
Layer seals structure, the insert seal structure assembled between end cap and outter box and plate, sealing member pair
Sealing structure between itself and cable and assembling end cap, makes outter box be formed in addition at injected rubber hose and exhaustor
Annular seal space, for fireproof seal gum fill provide seal cavity environment, cable fire-proof band for fire prevention
Fluid sealant creates conditions with combining closely of cable, solves sizing and the air-tightness problem of fireproof seal gum,
Can by high pressure, fireproof seal gum be injected in outter box under a certain pressure, it is ensured that fireproof seal gum fills
The cavity of full whole outter box, thus form fine and close packed layer at the peripheral of transition joint, it is ensured that anti-
The packed layer that fire fluid sealant is formed has high intensity, solves the defect that the lasting reliability of fire protecting performance is the best,
Split type package assembly rather than one-time formed design, can reduce cost in each stage made, promote
Economy, is conducive to being widely popularized, and after long-play uses, it remains to keep the most fire-proof and explosion-proof
Performance, it is thus possible to reduce the probability producing potential safety hazard.
In operation, in the outter box sealed, air is discharged, so by injecting carbon dioxide or nitrogen
After again to outter box inject fireproof seal gum, it is achieved the preposition process to oxidation environment, it is ensured that sealing and curing
After fireproof seal gum in do not have oxygen, thus eliminate the generation of oxidative phenomena, root excised
A kind of exopathogenic factor that cable catches fire.Joint is by cable fire-proof band and the double wrapped of fireproof seal gum again
Effect, so its water proof humidity resistance is notable, it is possible to avoid joint to make moist and cause short circuit problem.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the partial enlargement structural representation that in Fig. 1, I goes out；
Fig. 3 is the split type cross section structure schematic diagram of outter box shown A-A position in FIG in the present invention；
Fig. 4 is the cross section structure schematic diagram assembling end cap in the present invention；
Fig. 5 be in Fig. 4 assemble end cap in B-B to sectional structure schematic diagram；
Fig. 6 is the main TV structure schematic diagram of centerboard of the present invention；
Fig. 7 is the plan structure schematic diagram of centerboard of the present invention；
Fig. 8 is the main TV structure schematic diagram of sealing member in the present invention；
Fig. 9 is the C-C cross-sectional view of sealing member in Fig. 8；
Figure 10 is the broken section structural representation of the outer box of upper half in the present invention；
In figure: 1 outter box, the outer box of 11 upper half, 111 injected rubber hoses, 112 exhaustors, 113 connection deep gouges,
The outer box of 12 lower half；
10 flanges, 100 cylindrical seal bars, 101 sawtooth profiles one, 102 sawtooth profiles two, 103 bar shapeds
Groove；
2 assembling end caps, 21 bar shaped grooves, 22 lateral insert, 230 sealing rings, 231 annular boss；
3 plates, 31 fit screw rod, 32 nuts, 33 locating clamp plates；
4 sealing members, 41 strip boss, 42 embedded cushion rubbers；
5 cables.
Detailed description of the invention
For ease of understanding the technology contents of the present invention, the most just combine accompanying drawing and its technical scheme is made further
Explanation.
Fire-proof and explosion-proof structure at a kind of cable intermediate joint as shown in Figure 1, including by outer box 11 He of upper half
Outter box 1 that the outer box 12 of lower half fastens, the assembling end cap 2 being connected to outter box about 1 two-port
And it is arranged on the plate 3 on assembling end cap 2 and sealing member 4.
As shown in Figure 1, Figure 3, the outer box 11 of described upper half, the outer box 12 of lower half arrange corresponding type
Groove, and it is respectively provided with axially extended flange 10 in type groove transverse port both sides.Type groove such as Fig. 3 institute herein
Show and be set to semicircle shape.On the lower surface of the flange 10 of the outer box 11 of upper half, arrange inside flange 10
Sawtooth profile 1, arranges axially extended bar-shaped trough 103 outside flange 10；Accordingly, under
On the upper surface of the flange 10 of half outer box 12, sawtooth profile 2 102 is set inside flange 10, in convex
Axially extended bar-shaped trough 103 is set outside edge 10.Bar-shaped trough 103 in corresponding flange 10 is arranged along axle
To uniform row's vertical through hole, make the outer box 11 of assembly connection upper half box 12 outer with lower half and be used.Described
After the outer box 11 of upper half, the outer box 12 of lower half fasten, sawtooth profile 1 contacts with sawtooth profile 2 102 joins
Close, set outer for upper half box 11 and lower half in bar-shaped trough 103 after sealing strip by bolt through vertical through hole
Outer box 12 is fixed with one and forms outter box 1.As shown in Figure 1, Figure 3, outter box 1 in cross section is
Oval cylinder, its lumenal cross-section ovalize as shown in Figure 3.
For strengthening the connection sealing of the outer box 11 of upper half box 12 longitudinal edge outer with lower half, above-mentioned inside and outside
On the basis of two-layer seals structure (sawtooth moulding surface structure and bar-shaped trough structure), further by described sawtooth
Profile 1, the outer face of sawtooth profile 2 101 are set to frosting.Or as it is shown on figure 3, make described
Sawtooth profile 1 is from interior and be made up of face a2, face b2, face c2 outward, accordingly, and sawtooth profile two
102 from interior and be made up of face a1, face b1, face c1 outward, and at the face a1 of described sawtooth profile 2 102
Cylindrical groove is set with the joining place of face b1, in cylindrical groove, sets cylindrical seal bar 100 and make cylindrical seal
Cylindrical groove at upper end opposite face a1 and the face b1 of bar 100 is the most a part of, and to highlighting
Part arranges cylindrical groove at the joining place of the face a2 and face b2 of sawtooth profile 1.By outside upper half
After box 11 box 12 outer with lower half is connected, sawtooth profile, 101 completely attach to and post with sawtooth profile 2 102
Shape sealing strip 100 by complete inclusion in the groove that face a1 and face b1, face a2 and face b2 are formed, to cylindricality
Sealing strip 100 forms extruding inclusion.
The roof of the outer box 11 of upper half arranges injected rubber hose 111 and exhaustor 112.For ease of injected rubber hose 111,
Exhaustor 112 is firmly connected with extraneous pipeline, can be at the free end of described injected rubber hose 111 with exhaustor 112
Set external screw thread respectively.
As shown in Fig. 1-Fig. 2 and Fig. 4-Fig. 5, described assembling end cap 2 is provided with axial cylindrical chamber, in it
The end rounded cylinder of section, the free end of circular cylinder arranges flange and is connected with outter box 1, flange outer face
Inner side set annular boss 231, on outter box 1, corresponding annular boss 231 sets the cell body being embedded with sealing ring
(this cell body is semicircular in shape on the outer box of upper half, the outer box of lower half).The outer end section of assembling end cap 2 is square post
Body, the port at square cylinder arranges ring that is internal towards assembling end cap cylindrical chamber and that extend in a radial direction
Shape flange.Respectively on the upper and lower end face of assembling end cap 2 square cylinder part, arrange vertically opposite
Bar shaped groove 21 connect with the cylindrical chamber of assembling end cap 2, the flute length direction of bar shaped groove 21 is along assembling
The radial direction of end cap 2, groove width (left and right shown in Fig. 2 to) is vertically.On the outer face of collar flange,
Corresponding the vertical of bar shaped groove 21 arranges lateral insert 22 to middle part respectively, and makes the interior of lateral insert 22
The medial wall holding relative bar shaped groove 21 extends certain length axially inward.So needing to assemble on end cap 2
Collar flange there is certain axial width, in order to make the lateral insert 22 of setting enough deep, bar shaped
Groove 21 is sufficiently wide, and ensures that the sealing member 4 being arranged in bar shaped groove 21 has enough axial width
Degree.
As shown in Fig. 1-2 and Fig. 6-Fig. 7, described plate 3 is corresponding with lateral insert 22, adopts therebetween
Take profile contact matching relationship assembling.Plate 3 is arranged vertically to tapped through hole, fill at plate 3
When fitting in lateral insert 22, corresponding bar shaped groove 21 position at assembling end cap 2 of tapped through hole；Right
The tapped through hole that should arrange, is respectively provided with one and fits screw rod 31.Plate 3 is fastened for the ease of location,
The inner of plate 3 arranges locating clamp plate 33, arranges accordingly and position on the inner face of lateral insert 22
The slot that clamp 33 coordinates.Set screw rod part in the outer face of plate 3, screw rod part is installed nut 32.If
Put the nut 32 of screw rod part and cooperation, it is therefore intended that screw rod 31 and tapped through hole on plate 3 are fited in regulation
Position relationship.
As shown in Fig. 1-2 and Fig. 8-Fig. 9, described sealing member 4 is plate-shaped, between itself and bar shaped groove 21
Take profile contact to coordinate, be divided into upper semi-body and lower semi-body.Upper at the lower surface of upper semi-body and lower semi-body
End face arranges corresponding semi-circular recesses, arranges embedded cushion rubber 42 on the arc groove face of semi-circular recesses.
Strip boss 41 is set in the both sides of semi-circular recesses in the lower surface of upper semi-body, and makes strip boss 41
Lateral cross section is trapezoidal (as shown in Figure 8) that small end is downward.Corresponding strip boss 41, upper at lower semi-body
The cell body of cooperation is set on end face, sealing strip is set in the bottom of cell body.Upper semi-body at sealing member 4
Upper surface, the lower surface of lower semi-body are respectively provided with the blind hole corresponding with the end fiting screw rod 31.
For optimizing the sealing property of sealing member 4, make end face and bar shaped groove 21 before and after described sealing member 4
Between be interference fit, the front end face of upper semi-body of the most described sealing member 4, rear end face (left side shown in Fig. 8,
Right flank) it is from the upper and lower inclined-plane towards outer incline, the front end face of lower semi-body, rear end face are from bottom to top
Inclined-plane towards outer incline.Such as Fig. 8, preferably make turning, left and right two and the lower end of lower semi-body of the upper end of upper semi-body
Turning, left and right two curved, so can fill in bar shaped groove 21 reduce resistance for sealing member 4, it is simple to dress
Join.When sealing member 4 is subject to the pressure effect fiting screw rod 31, can vertically move to the direction of cable,
By the deformation of himself, the cell wall pressing with bar shaped groove 21 seals, and is sent to by deformation force embedded
Cushion rubber 42 and the outer wall of cable is formed pressing and seals.
Cable 5 uses cable fire-proof band by fully wrapped around for transition joint firmly juxtaposition after being connected by transition joint
In outter box 1, the remainder of cable 5 is in space outerpace (at cable 5 after assembling end cap 2
Part in assembling end cap 2 shape intracavity does not the most wrap up cable fire-proof band or person is positioned at assembling end cap 2 less
The part of port, shape chamber does not wrap up cable fire-proof band).Sealing member 4 is penetrated by bar shaped groove 21 and makes
The outer wall of embedded cushion rubber 42 contact cable taking 5 on its semi-circular recesses, plate 3 is contained in lateral insert 22
Screw rod 31 will be fited after Nei be arranged in tapped through hole, and screw and fit screw rod 31 and make to fit the end of screw rod 31
Portion inserts in the blind hole of sealing member 4.In outter box 1, fireproof seal gum is injected by injected rubber hose 111.
Fireproof seal gum use for existing colloid, the ratio of its constituent can be adjusted according to actual state
Whole, it is ensured that while flameproof effect, also to should ensure that the mobility of colloid.
In the structure shown in this device, the function of outter box 1 be for fireproof seal gum injection shape carry
For sealing die cavity, wrap up cable fire-proof band in the outside of transition joint, on the one hand play internal layer fireproof
Effect, on the other hand contributes to the set compactness effect between fireproof seal gum and transition joint, anti-
Closely sealed one can be become with the cable of transition joint corresponding part after fire sealing glue solidifying.At outter box 1
The closure of outter box 1 is made by the sealing structure being arranged around such as assembling end cap 2, plate 3, sealing member 4 etc.
Its inner chamber can bear certain intrinsic pressure time and unlikely notable leakage, thus after filling for fireproof seal gum
High pressure static keeps providing precondition, advantageously ensures that the fireproof seal gum after sizing has enough close
Closing property and intensity, i.e. form fine and close packed layer at the peripheral of cable connector, it is ensured that fireproof seal gum shape
The packed layer become has high intensity, solves the defect that the lasting reliability of fire protecting performance is the best.
In order to be further ensured that, the gas in outter box 1 is completely exhausted out, it is to avoid at fireproof seal gum with outer
Bubble is there is, as shown in Figure 10, in the roof of the outer box 11 of described upper half at the corner location of box body 1
Side correspondence injected rubber hose 111 sets with exhaustor 112 position and connects deep gouge 113.
The aperture of injected rubber hose 111 needs the caliber of noticeably greater than exhaustor 112.Further, can be described row
Transparent observation window is set on the upper end tube wall of trachea 112, and makes axial along exhaustor 112 of observation window
Extend certain length.Can watch fireproof seal gum upper surface in exhaustor 112 through observation window
Height and position.The axial height of injected rubber hose 111 is more than the axial height of exhaustor 112.
Because after the lower port of exhaustor 112 is blocked by fireproof seal gum, exhaustor 112 is the most just
Losing its effect originally, the source pressure injecting fireproof seal gum now by injected rubber hose 111 should increase, and passes through
Now the high pressure of fireproof seal gum passively injects, and oppresses the fireproof seal gum in outter box 1, makes colloid
Interior formation is intrinsic pressure, increases uniformity and compactness that fireproof seal gum is filled.So injected rubber hose 111 and row
Trachea 112 should have certain axial length.
When fireproof seal gum is after connecting cable location solidification, it is possible to cut off cable and contact with extraneous, make
The joint of cable is in sealed environment, will not again by Oxidation or make moist and cause short circuit problem,
It is thus possible in the main cause fundamentally cutting off ignition of cable.
The installation and application of fire-proof and explosion-proof combinative structure at described power system cable connector, step is as follows:
1) the assembling end cap 2 being mounted in outter box 1 two ends is interspersed on to be connected two section cable 5；
2) after cable 5 being connected with transition joint, re-use cable fire-proof band by fully wrapped around for transition joint live,
Finally the cable part being enclosed with cable fire-proof band is placed in the outer box 12 of lower half internal；
3) outer with lower half for outer for upper half box 11 box 12 is fixedly connected into outter box 1；
4) assembling end cap 2 is fixedly connected on the two ends, left and right of outter box 2；
5) upper semi-body of sealing member 4, lower semi-body are upwards inserted from the upper and lower of bar shaped groove 21 respectively
Enter, make the wall contacts of embedded cushion rubber 42 and cable 5；Then plate 3 is inserted the lateral insert of correspondence
In 22；Finally screw in the tapped through hole of plate 3 to the end insertion fiting screw rod 31 by fiting screw rod 31
Only extruding is formed in the blind hole of sealing member 4 and to sealing member 4；The most embedded cushion rubber 42 should be with cable 5
Outer wall be in close contact, sealing member 4 itself be squeezed deformation can the tight pressing with the wall body of bar shaped groove 21,
And ultimately form sealing structure axially, radially；
6) port at exhaustor 112 is injected in outter box 1 by injected rubber hose 111 after installing pressure valve
Carbon dioxide or nitrogen, continue after the air pressure inside of outter box 1 is more than the force value of pressure valve
Injecting carbon dioxide gas or nitrogen 5 to 10min in outter box 1, with abundant emptying outter box 1
Interior air, makes to be full of carbon dioxide or nitrogen；
7) shed the pressure valve on exhaustor 112 port, and filled in outter box 1 by injected rubber hose 111
Fireproof seal gum to fireproof seal gum extends to certain altitude in exhaustor 112.Inject fireproof seal gum
During, fireproof seal gum gradually drives the carbon dioxide in outter box 1 or nitrogen flooding out of outer box
Body 1；During fireproof seal gum injects in exhaustor 112, the delivery source pressure of fireproof seal gum increases,
Make to fill the fireproof seal gum in outter box 1 and bear certain intrinsic pressure.
On the basis of the above, can be further: in outter box 1, injected fire proof seal by injected rubber hose 111
When glue to fireproof seal gum rises in the middle part of the observation window of exhaustor 112, install in the end of exhaustor 112
End cover, then proceedes to squeeze into fireproof seal gum 1 to 3min to outter box 1 with certain high pressure, until
Exhaustor 112 interior fireproof seal gum glue post at observation window stops when no longer having significant change.This quiet
Under state, fireproof seal gum is carried out the mode of pressurize, it is possible to promote fireproof seal gum filling effect so that it is
Give play to limits fire proof seal effect.
In addition to the technical characteristic described in description, it is the known technology of those skilled in the art.
Claims (9)
1. a fire-proof and explosion-proof combinative structure at power system cable connector, is characterized in that:
Including the outter box fastened by the outer box of upper half and the outer box of lower half, it is connected to two ends, outter box left and right
Mouthful assembling end cap and be arranged on assembling end cap on plate and sealing member；
The outer box of described upper half, the outer box of lower half arrange corresponding type groove, and divides in type groove port both sides
Axially extended flange is not set；The lower surface of the flange of the outer box of upper half arranges sawtooth profile in inner side
One；Accordingly, the upper surface of the flange of the outer box of lower half arranges sawtooth profile two in inner side；On described
After the outer box of half outer box, lower half fastens, two profiles of sawtooth profile one and sawtooth profile contact cooperation, and upper half
Outer box box outer with lower half is connected by the bolt being arranged on flange；The roof of the outer box of upper half arranges note
Sebific duct and exhaustor；
Described assembling end cap is provided with axial cylindrical chamber, its inner rounded cylinder of section, circular cylinder from
Being arranged flange by end to be connected with outter box, the inner side of flange outer face sets annular boss, corresponding on outter box
Annular boss sets the cell body being embedded with sealing ring；The outer end section of assembling end cap is square cylinder, in square column
The port of body arranges collar flange that is internal towards assembling end cap cylindrical chamber and that extend in a radial direction；
Respectively on the upper and lower end face of assembling end cap square cylinder part, vertically opposite bar shaped is set
Groove connects with the cylindrical chamber of assembling end cap, and the flute length direction of bar shaped groove is along the radial direction of assembling end cap；?
On the outer face of collar flange, corresponding the vertical of bar shaped groove arranges lateral insert to middle part respectively, and makes
The medial wall of the inner bar shaped groove relatively of lateral insert extends certain length axially inward；
Described plate is corresponding with lateral insert, takes therebetween profile contact matching relationship assembling；Inserting
Arrange on plate vertically to tapped through hole, when plate is assemblied in lateral insert, tapped through hole is corresponding to exist
The bar shaped groove position of assembling end cap；The tapped through hole being correspondingly arranged, is respectively provided with one and fits screw rod；
Described sealing member is plate-shaped, takes profile to contact cooperation, be divided into upper semi-body between its with bar shaped groove
And lower semi-body；In the lower surface of upper semi-body and the upper surface of lower semi-body, corresponding semi-circular recesses is set,
The arc groove face of semi-circular recesses arranges embedded cushion rubber；In the lower surface of upper semi-body in semi-circular recesses
Both sides strip boss is set, and to make the lateral cross section of strip boss be downward trapezoidal of small end；Corresponding bar
Shape boss, arranges the cell body of cooperation on the upper surface of lower semi-body, arranges sealing strip in the bottom of cell body；
In the upper surface of upper semi-body of sealing member, the lower surface of lower semi-body is respectively provided with and fits the end pair of screw rod
The blind hole answered；
Cable is firmly placed in fully wrapped around for transition joint with cable fire-proof band after being connected by transition joint
In outter box, the remainder of cable is in space outerpace after assembling end cap；Sealing member is by bar shaped groove
Penetrate the outer wall of the embedded cushion rubber contact cable taking made on its semi-circular recesses, after plate is contained in lateral insert
Screw rod will be fited be arranged in tapped through hole, screw fit screw rod make to fit screw rod end insert sealing member
Blind hole in；In outter box, fireproof seal gum it is injected with by injected rubber hose.
Fire-proof and explosion-proof combinative structure at power system cable connector the most according to claim 1, it is special
Levy and be: for interference fit between end face and bar shaped groove before and after described sealing member；The upper half of described sealing member
The front end face of body, rear end face are from the upper and lower inclined-plane towards outer incline, the front end face of lower semi-body, rear end face
For from bottom to top towards the inclined-plane of outer incline.
Fire-proof and explosion-proof combinative structure at power system cable connector the most according to claim 1 and 2,
It is characterized in that: described sawtooth profile one is from interior and be made up of face a2, face b2, face c2 outward, accordingly, saw
Profile of AT two is from interior and be made up of face a1, face b1, face c1 outward；Described sawtooth profile two face a1 with
The joining place of face b1 arranges cylindrical groove, sets cylindrical seal bar and make the upper of cylindrical seal bar in cylindrical groove
End opposite face a1 and face b1 at cylindrical groove the most a part of, and to should ledge at sawtooth
The joining place of the face a2 and face b2 of profile one arranges cylindrical groove.
Fire-proof and explosion-proof combinative structure at power system cable connector the most according to claim 1 and 2,
It is characterized in that: described sawtooth profile one, sawtooth profile two are frosting.
Fire-proof and explosion-proof combinative structure at power system cable connector the most according to claim 1 and 2,
It is characterized in that: inside the roof of the outer box of described upper half, corresponding injected rubber hose sets with exhaustor position and connects deep gouge.
Fire-proof and explosion-proof combinative structure at power system cable connector the most according to claim 1 and 2,
It is characterized in that: described injected rubber hose sets external screw thread respectively with the free end of exhaustor.
Fire-proof and explosion-proof combinative structure at power system cable connector the most according to claim 1 and 2,
It is characterized in that: transparent observation window is set on the upper end tube wall of described exhaustor, and makes observation window along row
The axially extending certain length of trachea；The axial height of injected rubber hose is more than the axial height of exhaustor.
8. the installation and application of fire-proof and explosion-proof combinative structure at power system cable connector described in, step is:
The assembling end cap being mounted in outter box two ends is respectively interposed on two sections of cables to be connected；
2), after being connected by cable with transition joint, cable fire-proof band is re-used transition joint is fully wrapped around
Live, finally the cable part being enclosed with cable fire-proof band is placed in the outer box of lower half；
3) outer with lower half for outer for upper half box box is fixedly connected into outter box；
4) assembling end cap is fixedly connected on the two ends, left and right of outter box；
5) upper semi-body of sealing member, lower semi-body are inserted upwardly into from the upper and lower of bar shaped groove respectively, make
Embedded cushion rubber and the wall contacts of cable；Then plate is inserted in corresponding lateral insert；Finally will be tight
Close screw rod screw in plate tapped through hole to fit screw rod end insert sealing member blind hole in and to sealing
Part only forms extruding；
6) by injected rubber hose injecting carbon dioxide gas in outter box after the port at exhaustor installs pressure valve
Body or nitrogen, note in continuing outside box body after the air pressure inside of outter box is more than the force value of pressure valve
Enter carbon dioxide or nitrogen 5 to 10min；
7) shed the pressure valve on exhaustor port, and in outter box, filled fireproof seal gum by injected rubber hose
Certain altitude in extending to exhaustor to fireproof seal gum.
9. for combinative structure fire-proof and explosion-proof at power system cable connector described in claim 7, and based on
The installation and application of fire-proof and explosion-proof combinative structure at power system cable connector described in claim 8,
The step 7 of claim 8) in, injected rubber hose in outter box, inject fireproof seal gum to fireproof seal gum
When rising in the middle part of the observation window of exhaustor, end cover is installed in the end of exhaustor；Continue to outter box
Fireproof seal gum 1 to 3min is squeezed into certain high pressure, until the interior fire proof seal at observation window of exhaustor
Glue glue post stops when no longer having significant change.
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| CN107327470A (en) * | 2017-06-01 | 2017-11-07 | 国网福建省电力有限公司泉州供电公司 | A kind of injecting glue bolt, disc insulator mounting structure and installation method |
| CN107874983A (en) * | 2017-11-13 | 2018-04-06 | 姜曼曼 | Multi-function walking stick is used in a kind of new-type medical recovery training |
| CN108399970A (en) * | 2018-04-28 | 2018-08-14 | 福建通宇电缆有限公司 | A kind of cable being stably connected with |
| CN111432584A (en) * | 2020-03-27 | 2020-07-17 | 深圳市泰士特科技股份有限公司 | Combined wiring connection tray device |
| CN111474653A (en) * | 2020-05-25 | 2020-07-31 | 新三科技有限公司 | Junction box for laying optical cable |
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| CN111474653A (en) * | 2020-05-25 | 2020-07-31 | 新三科技有限公司 | Junction box for laying optical cable |
| CN111474653B (en) * | 2020-05-25 | 2024-03-22 | 新三科技有限公司 | Junction box for laying optical cable |
| GB2608637A (en) * | 2021-07-08 | 2023-01-11 | Viridian Solar Ltd | Fire enclosure |
| WO2023281066A1 (en) * | 2021-07-08 | 2023-01-12 | Viridian Solar Limited | Fire enclosure |
| CN113904156A (en) * | 2021-10-09 | 2022-01-07 | 深圳市银星联盟电力科技有限公司 | PT cable plug and connecting method thereof |
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