Summary of the invention
The objective of the invention is:
The invention provides a kind of pressure water pipe lead-out line interface leakage protection device that overcomes defects, consisted of by cannulated sleeve, rubber seal, threading tube core and four parts of stressed nut, this leakage protection device not only sealing effect is better, and be convenient to installation and removal, can also realize immediately sealing degree of tightness and regulate under the pump working state.
Purpose of the present invention can be achieved through the following technical solutions:
a kind of leakage protection device for pressure water pipe lead-out line interface, comprise cannulated sleeve, rubber seal, threading tube core and stressed nut, described cannulated sleeve is welded on the submersible pump power line of penstock and draws jointing, rubber seal is fitted in cannulated sleeve by the threading tube core, the threading tube core is fixed on cannulated sleeve by stressed nut, the relative position place of penstock and cannulated sleeve welding is provided with the penstock threading hole, rubber seal is provided with the Sealing threading hole that supplies the submersible pump power line to draw that matches with the penstock threading hole from penstock, the threading tube core is provided with the threading tube core wire outlet hole that matches with the Sealing threading hole.
Described cannulated sleeve is the cylinder type hollow cylinder.
Described stressed nut and cannulated sleeve are threaded connection.
Described rubber seal is frustoconic shape, and its larger diameter end is close to penstock.
Described Sealing threading hole is the clear opening perpendicular to bottom surface on rubber seal.
Described threading tube core outside cylindrical, be provided with the boss of a circle ring on its outer wall, the hypomere of penetration pipe core inner is the round platform that caves in that shape matches with the rubber seal shape, cave in the height of round platform less than the height of rubber seal, the epimere of penetration pipe core inner is offered concave station, and threading tube core wire outlet hole is arranged between the smaller diameter end of concave station bottom surface and the round platform that caves in.
Described threading tube core outside cylindrical is provided with the boss of a circle ring on its outer wall, the upper end-hole inner ring of stressed nut is provided with the ring table top that matches with boss.
Described threading tube core outside cylindrical is provided with the boss of a circle ring on its outer wall, rubber seal is fitted in cannulated sleeve by the threading tube core, leaves the space between the mouth of pipe of boss and cannulated sleeve open end.
Vertically offer the bar shaped locating slot on the mouth of pipe of the open end of described cannulated sleeve, be provided with the boss of a circle ring on outside cylindrical and its outer wall of threading tube core, the boss lower end is provided with the positioning strip that matches with the bar shaped locating slot.
Beneficial effect of the present invention:
1, water supply quality is not exerted an influence.Because not adopting sealer typing sealing, thereby avoided sealer to contact with water, water supply is caused secondary pollution.
2, good sealing effect can effectively prevent the leakage of water in pressure tube.
3, be convenient to pipeline equipment production and install and overhaul dismounting.Leakage protection device of the present invention only needs first cannulated sleeve and penstock to be welded, and remaining part all can be completed by simple manual operations, and can realize instant the adjusting under the pump working state.
4, good endurance, parts are not perishable, displacement.
Description of drawings
Fig. 1 is cross-sectional view of the present invention;
Fig. 2 is one of partial structurtes schematic diagram of the present invention;
Fig. 3 is the structural representation of rubber seal of the present invention;
Fig. 4 is one of structural representation of threading tube core of the present invention;
Fig. 5 be threading tube core of the present invention structural representation two;
Fig. 6 is the structural representation of stressed nut of the present invention;
Fig. 7 is structural representation of the present invention;
Fig. 8 is the force analysis figure of rubber seal of the present invention.
In figure: 1, penstock; 2, penstock threading hole; 3, cannulated sleeve; 4, rubber seal; 5, Sealing threading hole; 6, threading tube core; 7, boss; 8, the round platform that caves in; 9, concave station; 10, threading tube core wire outlet hole; 11, stressed nut; 12, ring table top; 13, locating slot; 14, positioning strip.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Leakage protection device for pressure water pipe lead-out line interface of the present invention, the line of wherein drawing refers to the submersible pump power line.As shown in Figure 1, this leakage protection device comprises four parts such as cannulated sleeve 3, rubber seal 4, threading tube core 6 and stressed nut 11.
As shown in Figure 2, cannulated sleeve 3 is the cylinder type hollow cylinder, and the one end is welded on the submersible pump power line of penstock 1 and draws jointing.The relative position place of penstock 1 and cannulated sleeve 3 welding is provided with penstock threading hole 2, and it is bigger that the aperture ratio of threading hole 2 is worn the external diameter of submersible pump power line, can pass smoothly electric wire and get final product.
As Fig. 1, shown in Figure 3, rubber seal 4 is fitted in cannulated sleeve 3 by threading tube core 6.Rubber seal 4 is frustoconic shape, and its larger diameter end is close to penstock 1.Rubber seal 4 is provided with the Sealing threading hole 5 that supplies the submersible pump power line to draw that matches with penstock threading hole 2 from penstock 1.Sealing threading hole 5 is the clear opening perpendicular to bottom surface on rubber seal 4.Should note the position of Sealing threading hole 5 corresponding with the position of penstock threading hole 2 when press-fiting.
As Fig. 4, shown in Figure 5, threading tube core 6 outside cylindrical is provided with the boss 7 of a circle ring on its outer wall.The hypomere of threading tube core 6 inside is the round platform 8 that caves in that shape matches with rubber seal 4 shapes, and the height of the round platform 8 that caves in is less than the height of rubber seal 4, and the epimere of threading tube core 6 inside is offered concave station 9.
Threading tube core 6 is provided with the threading tube core wire outlet hole 10 that matches with Sealing threading hole 5.Threading tube core wire outlet hole 10 is arranged between the smaller diameter end of concave station 9 bottom surfaces and the round platform 8 that caves in for being parallel to the clear opening of threading tube core 6 cylinder axis.Sealing threading hole 5 apertures of reserving on threading tube core wire outlet hole 10 apertures and rubber seal 4 are identical, and position of opening is corresponding.
As Fig. 1, shown in Figure 7, threading tube core 6 is fixed on cannulated sleeve 3 by stressed nut 11, and stressed nut 11 and cannulated sleeve 3 are threaded connection.As shown in Figure 2, the outer wall of cannulated sleeve 3 is provided with outside thread.As shown in Figure 6, the hypomere inwall of stressed nut 11 is provided with the internal thread that matches with cannulated sleeve 3 outside threads, makes cannulated sleeve 3 and stressed nut 11 realize being threaded.
As shown in Figure 1, the upper end-hole inner ring of stressed nut 11 be provided with threading tube core 6 outer walls on the ring table top 12 that matches of boss 7, fixedly the time, ring table top 12 is stuck on boss 7, make threading tube core 6 with respect to the fixing not landing in cannulated sleeve 3 positions.
Boss 7 is apart from the distance of the threading tube core 6 bottom surfaces height less than cannulated sleeve 3, and after guaranteeing that threading tube core 6 is compressed into cannulated sleeve 3 fully, the bottom surface tripping power water pipe 1 of threading tube core 6 has certain safe distance, not the rupture pressure water pipe.
After threading tube core 6 was fixed on cannulated sleeve 3 by stressed nut 11, rubber seal 4 compressed mutually by threading tube core 6 and penstock.For guaranteeing that rubber seal 4 can be by the stressed purpose that reaches sealing of extrusion-deformation, after the smaller diameter end phase pressing of the end face of the round platform 8 that caves in and rubber seal 4, boss 7 and cannulated sleeve 3 open ends are also should leave the space between the mouth of pipe of non-welding ends, otherwise rubber seal 4 lacks the leeway of distortion.
As shown in Figure 2, vertically offer bar shaped locating slot 13 on the mouth of pipe of the open end of cannulated sleeve 3.As Fig. 4, shown in Figure 5, boss 7 lower ends on threading tube core 6 outer walls are provided with the positioning strip 14 that matches with bar shaped locating slot 13.When threading tube core 6 hypomeres are put into cannulated sleeve 3, positioning strip 14 is engaged with locating slot 13.
The engaging that it should be noted that locating slot 13 and positioning strip 14 when locating slot 13 and positioning strip 14 are set is relatively fixing with position between build-up of pressure water pipe biography line hole 2 and threading tube core wire outlet hole 10.For preventing that penstock from passing that between line hole 2 and threading tube core wire outlet hole 10, dislocation causes the submersible pump power line not draw smoothly, should determine according to the position of positioning strip 14 direction of locating slot 13 when welded hollow sleeve 3 and penstock 1.Also can be when casting threading tube core 6, the position of positioning strip 14 is positioned on the medial axis or the axis of symmetry of threading tube core wire outlet hole 10 as far as possible, so that when welded hollow sleeve 3 and penstock 1, on medial axis or the axis of symmetry with the position alignment penstock threading hole 2 of locating slot 13, can guarantee that penstock pass line hole 2 and threading tube core wire outlet hole 10 position correspondences can be drawn the submersible pump power line smoothly.
As shown in Figure 8, the extruding force f of threading tube core 6 is received in rubber seal of the present invention 4 sides, and this power is pointed to rubber seal 4 center lines perpendicular to rubber seal 4 side surfaces.Power f resolves into the power f of substantially horizontal
xPower f with vertical direction
y, power f
xBe used for squeeze sealing member threading hole 5, force rubber seal 4 and the electric wire of wearing to be combined closely, thus sealed wire; Power f
yFor extruding rubber seal 4 bottoms, force rubber seal 4 to be combined with penstock 1 intimate, thus sealing load water pipe 1.
Embodiment one
A kind of leakage protection device for pressure water pipe lead-out line interface comprises cylinder type hollow sleeve 3, rubber seal 4, threading tube core 6 and stressed nut 11.Cannulated sleeve 3 is welded on the submersible pump power line of penstock 1 and draws jointing, rubber seal 4 is fitted in cannulated sleeve 3 by threading tube core 6, threading tube core 6 is fixed on cannulated sleeve 3 by stressed nut 11, and stressed nut 11 and cannulated sleeve 3 are threaded connection.
The relative position place of penstock 1 and cannulated sleeve 3 welding is provided with penstock threading hole 2, rubber seal 4 is provided with the Sealing threading hole 5 that supplies the submersible pump power line to draw that matches with penstock threading hole 2 from penstock 1, threading tube core 6 is provided with the threading tube core wire outlet hole 10 that matches with Sealing threading hole 5.
Rubber seal 4 is frustoconic shape, and its larger diameter end is close to penstock 1.
Sealing threading hole 5 is the clear opening perpendicular to bottom surface on rubber seal 4.
Threading tube core 6 outside cylindrical, be provided with the boss 7 of a circle ring on its outer wall, the hypomere of threading tube core 6 inside is the round platform 8 that caves in that shape matches with rubber seal 4 shapes, cave in the height of round platform 8 less than the height of rubber seal 4, the epimere of threading tube core 6 inside is offered concave station 9, and threading tube core wire outlet hole 10 is arranged between the smaller diameter end of concave station 9 bottom surfaces and the round platform 8 that caves in.The upper end-hole inner ring of stressed nut 11 is provided with the ring table top 12 that matches with boss 7.Rubber seal 4 is fitted in cannulated sleeve 3 by threading tube core 6, leaves the space between the mouth of pipe of boss 7 and cannulated sleeve 6 open ends.
Vertically offer bar shaped locating slot 13 on the mouth of pipe of the open end of cannulated sleeve 3, be provided with the boss 7 of a circle ring on outside cylindrical and its outer wall of threading tube core 6, boss 7 lower ends are provided with the positioning strip 14 that matches with bar shaped locating slot 13.
Wherein, the cave in size of round platform 8 and being designed and sized to of rubber seal 4 of threading tube core 6:
The upper circle radius d=11mm of the
round platform 8 that caves in of
threading tube core 6, lower circle radius e=17.2mm, degree of depth b=26mm; The triangle right angle side a=46mm that extends; Circle radius d=11mm on frustoconic
shape rubber seal 4, lower circle radius f=21mm, height b+c=42mm.By
With
Know: the complete contact in side of the side of frustoconic
shape rubber seal 4 and the
round platform 8 that caves in, thus make
rubber seal 4 sides stressed evenly, guarantee the sealing effect good to wearing electric wire.
Being designed and sized to of threading tube core 6 and cannulated sleeve 3:
The height h=39mm of cannulated sleeve 3, internal diameter n=42mm; The boss following cylinder height g=32mm in 7 bottom surfaces on threading tube core 6, diameter l=41mm; The outside diameter m=47mm of round ring boss 7.Known with g<h by c+g>h: even following threading tube core 6 outer walls in 1 boss 7 bottom surfaces contact with cannulated sleeve 3, the bottom surface of threading tube core 6 still separates with the outer surface of penstock 1, thereby assurance prevents threading tube core 6 rupture pressure water pipe 1 surfaces.
The adjustable range p=c+g-h=9mm of rubber seal 4, namely stressed nut has the regulation range of 9mm, and experiment shows, when stressed nut generally is adjusted to 6mm, can realize sealing fully.
The part that the present invention does not relate to all prior art that maybe can adopt same as the prior art is realized.