CN201886877U

CN201886877U - Enhanced dual-sealing-structure transformer sleeve pipe

Info

Publication number: CN201886877U
Application number: CN201020658159XU
Authority: CN
Inventors: 何平; 周亚清
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-14
Filing date: 2010-12-14
Publication date: 2011-06-29
Anticipated expiration: 2020-12-14

Abstract

The utility model discloses an enhanced dual-sealing-structure transformer sleeve pipe, which comprises an electric conducting rod and a porcelain sleeve and is characterized in that the enhanced dual-sealing-structure transformer sleeve pipe also comprises a glue filling sealing ring, an outer sealing ring, an inner sealing ring and an upper cap with a stepped hole, wherein the electric conducting rod is provided with a step, the outer side of the top of the porcelain sleeve is provided with a combining part with knurls, the upper cap is sheathed at the outer side of the porcelain sleeve to form a whole body, the top end of the step hole and the step part are respectively processed with an outer sealing surface and an inner sealing surface, the whole body formed by the upper cap and the porcelain sleeve is sheathed and arranged at the outer side of the electric conducting rod, the inner sealing ring is fixed between the inner sealing surface and the step of the electric conducting rod, the outer sealing ring is fixed at the outer sealing surface part, and in the structure, the inner sealing ring and the outer sealing ring are tightly pasted with the electric conducting rod. The whole sealing structure has a tough elasticity and also has complementation and self restoring effects, so the sealing performance is obviously improved, and the bending load resistance capability and the impact vibration resistance capability are greatly enhanced.

Description

Enhancement mode double sealing structure transformer sleeve pipe

Technical field

The utility model relates to a kind of bushing shell for transformer, is specifically related to a kind of enhancement mode double sealing structure transformer sleeve pipe.

Background technology

Now hermetically-sealed construction that bushing shell for transformer adopts only only is provided with sealing together between the insulator and gland being socketed on the conducting rod, promptly is being fixed with seal between the contact-making surface about insulator and the gland.The hermetically-sealed construction of such bushing shell for transformer, the poor reliability of sealing, and also counter-bending load-bearing capacity is low, occurs seal failure easily when being subjected to than big bang or impact and cause seepage to bring hidden danger for the safe operation of transformer in transportation, installation process.

Summary of the invention

For solving the deficiency that prior art exists, the purpose of this utility model is to provide a kind of enhancement mode double sealing structure transformer sleeve pipe with inside and outside double-layer seal and anti-bend loading function admirable.

To achieve these goals, the utility model adopts following technical scheme:

Enhancement mode double sealing structure transformer sleeve pipe, comprise conducting rod and insulator, it is characterized in that, also comprise: mucilage binding sealing ring, exterior seal ring, inner seal ring, have the last cap of shoulder hole, above-mentioned conducting rod upper end is provided with step, above-mentioned insulator top outer is provided with the joint portion that has annular knurl that is used for mucilage binding, and the above-mentioned cap sleeve of going up is connected on integral body of top outer formation of above-mentioned insulator also by forming an integral body at above-mentioned joint portion mucilage binding; The top of cap and the step place of shoulder hole are processed with external seal face and inner sealing surface respectively on above-mentioned, above-mentioned conducting rod passes the above-mentioned cap of going up and connects with the whole of insulator formation and with this overall fixed, be provided with the inner seal ring of going up cap and conducting rod step seal isolation with above-mentioned between the step of above-mentioned inner sealing surface and conducting rod, above-mentioned external seal face place is provided with the exterior seal ring of being close on the above-mentioned conducting rod external diameter light face.

Aforesaid enhancement mode double sealing structure transformer sleeve pipe, it is characterized in that, above-mentioned position of going up the corresponding above-mentioned insulator of cap joint portion is provided with the mucilage binding groove that is used to increase the mucilage binding frictional force, the position of the corresponding above-mentioned insulator of above-mentioned shoulder hole upper surface is provided with seal groove, be injected with the adhesive that is used to connect above-mentioned upward cap and insulator in the above-mentioned mucilage binding groove, above-mentioned mucilage binding sealing ring is housed in the above-mentioned seal groove.

Aforesaid enhancement mode double sealing structure transformer sleeve pipe is characterized in that, also is provided with to be used for above-mentioned exterior seal ring is fixed on gland or packing ring on the above-mentioned conducting rod external diameter light face outside of exterior seal ring on the fixing above-mentioned conducting rod of above-mentioned gland or packing ring.

Aforesaid enhancement mode double sealing structure transformer sleeve pipe is characterized in that above-mentioned mucilage binding groove is the multiple tracks groove.

Aforesaid enhancement mode double sealing structure transformer sleeve pipe is characterized in that the adhesive that injects above-mentioned mucilage binding groove is the epoxy glue mixture.

Usefulness of the present utility model is:

1, adopts the double sealing structure, its sealing property is significantly strengthened, strengthened the reliability of bushing shell for transformer greatly;

2, inside and outside sealing complementary effect is good, and the position that external seal is set has significantly improved counter-bending load-bearing capacity of sleeve pipe and impact resisting vibrating ability;

3, the mucilage binding sealed groove of two pass groove is adopted on insulator top, make the connection of insulator more firm, and its overall structure not only helps improving the bending strength of sleeve pipe integral body, also owing to the raising of fitted position precision, promoted the reliability of sleeve pipe overall performance.

Description of drawings

Fig. 1 is the overall structure schematic diagram of enhancement mode double sealing structure transformer sleeve pipe of the present utility model;

Fig. 2 is the partial structurtes schematic diagram of enhancement mode double sealing structure transformer sleeve pipe of the present utility model;

Fig. 3 partly cuts open structural representation for the last cap of enhancement mode double sealing structure transformer sleeve pipe of the present utility model;

Fig. 4 is the partial structurtes schematic diagram of the insulator of enhancement mode double sealing structure transformer sleeve pipe of the present utility model;

The implication of Reference numeral among the figure:

1, insulator, 2, go up cap, 3, gland, 4, exterior seal ring, 5, conducting rod, 6, inner seal ring, 7, the mucilage binding sealing ring, 8, adhesive, 13, the joint portion, 14, the external seal face, 16, inner sealing surface, 17, seal groove, 18, mucilage binding strengthens groove.

Embodiment

Below in conjunction with Figure of description technical scheme of the present invention is described in detail.

Fig. 1 is the overall structure schematic diagram of enhancement mode double sealing structure transformer sleeve pipe of the present utility model; Fig. 2 is the partial structurtes schematic diagram of enhancement mode double sealing structure transformer sleeve pipe of the present utility model; Fig. 3 is the partial structurtes schematic diagram of the insulator of enhancement mode double sealing structure transformer sleeve pipe of the present utility model; Fig. 4 partly cuts open structural representation for the last cap of enhancement mode double sealing structure transformer sleeve pipe of the present utility model.

As shown in Figure 1, primary structures such as enhancement mode double sealing structure transformer sleeve pipe of the present utility model comprises insulator 1, goes up cap 2, gland 3, conducting rod 5 comprise that also other constitute the parts of bushings shell for transformer, because of all belonging to prior art, below detailed description no longer.Main improvement structure of the present utility model be as shown in Figure 2 insulator 1 and the hermetically-sealed construction between the conducting rod 5, elaborate below in conjunction with Fig. 2, Fig. 3, Fig. 4.

With reference to Fig. 4, earlier annular knurl is carried out in the insulator 1 upper port outside and form joint portion 13, in order to guarantee subsequent process, the degree of depth of annular knurl after glazing at 13 places, joint portion should be not less than 1mm.

With reference to Fig. 2, Fig. 3, last cap 2 centers are provided with shoulder hole, and this shoulder hole port place thereon is provided with external seal face 14; Be provided with inner sealing surface 16 at its step place; External seal face 14, inner sealing surface 16 are in order to be increased in and exterior seal ring 4, sealing property when inner seal ring 6 contacts.In addition, as shown in Figure 2, last cap 2 is socketed in insulator 1 upper end, the part inwall of last cap 2 shoulder holes contacts, fits with joint portion 13, in order to make cap 2 and insulator 1 form an integral body, as a kind of preferred version, the mucilage binding that the position of the corresponding above-mentioned insulator of the shoulder hole of last cap 2 joint portion 13 is provided with around whole shoulder hole inwall circumference strengthens groove 18, it is more firm for mucilage binding is connected, it can be the multiple tracks groove that the mucilage binding sealing strengthens groove 18, in addition, be provided with a circle seal groove 17 in the position of last cap 2 corresponding insulators 1 upper surface.

When assembling, with mucilage binding sealing ring 7 seal groove 17 of packing into, after cap 2 and insulator 1 are worked good, strengthen at the annular knurl of joint portion 13 and mucilage binding and to inject adhesive 8 between the groove 18 and form reliable mucilage binding and connect, make cap 2 and integral body of insulator 1 formation with sealing function.

Then inner seal ring 6 being assembled to the step place of conducting rod 5, going up the integral body that cap 2 and insulator 1 form and be socketed on the conducting rod 5 above-mentioned then, is that the upper end of conducting rod 5 passes from the shoulder hole of last cap 2.At this moment, the inner sealing surface 16 of last cap 2 closely cooperates with the inner seal ring 6 that is assemblied in conducting rod 5 step places and forms the sealing of first road, promptly interior sealing.

Then exterior seal ring 4 is assembled between the external seal face 14 of conducting rod 5 and last cap 2, exterior seal ring 4 is close on the light face of conducting rod 5 external diameters, order is installed gland 3(or is adopted packing ring again) and clamp nut, make gland 3 can compress exterior seal ring 4 and form the sealing of second road, i.e. external seal.

The enhancement mode double sealing structure that the relative dimensions of last cap 2, conducting rod 3, exterior seal ring 4, inner seal ring 6 should cooperatively interact and have interior external seal complementary effect reliably to constitute.

This enhancement mode double sealing structure transformer sleeve pipe is when running into bigger bending force effect or impact shock, because it is little that it is fastenedly connected scope, and the toughness elastic force of interior exterior seal ring has complementation and from recovery effects, thereby sealing property significantly improves, and counter-bending load-bearing capacity and impact resisting vibrating ability greatly strengthen.

The foregoing description does not limit the utility model in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in the protection range of the present utility model.

Claims

1. enhancement mode double sealing structure transformer sleeve pipe, comprise conducting rod and insulator, it is characterized in that, also comprise: mucilage binding sealing ring, exterior seal ring, inner seal ring, have the last cap of shoulder hole, above-mentioned conducting rod upper end is provided with step, above-mentioned insulator top outer is provided with the joint portion that has annular knurl that is used for mucilage binding, and the above-mentioned cap sleeve of going up is connected on integral body of top outer formation of above-mentioned insulator also by forming an integral body at above-mentioned joint portion mucilage binding; The top of cap and the step place of shoulder hole are processed with external seal face and inner sealing surface respectively on above-mentioned, above-mentioned conducting rod passes the above-mentioned cap of going up and connects with the whole of insulator formation and with this overall fixed, be provided with the inner seal ring of going up cap and conducting rod step seal isolation with above-mentioned between the step of above-mentioned inner sealing surface and conducting rod, above-mentioned external seal face place is provided with the exterior seal ring of being close on the above-mentioned conducting rod external diameter light face.

2. enhancement mode double sealing structure transformer sleeve pipe according to claim 1, it is characterized in that, above-mentioned position of going up the corresponding above-mentioned insulator of cap joint portion is provided with the mucilage binding groove that is used to increase the mucilage binding frictional force, the position of the corresponding above-mentioned insulator of above-mentioned shoulder hole upper surface is provided with seal groove, be injected with the adhesive that is used to connect above-mentioned upward cap and insulator in the above-mentioned mucilage binding groove, above-mentioned mucilage binding sealing ring is housed in the above-mentioned seal groove.

3. enhancement mode double sealing structure transformer sleeve pipe according to claim 1 and 2, it is characterized in that, also be provided with and be used for above-mentioned exterior seal ring is fixed on gland or packing ring on the above-mentioned conducting rod external diameter light face outside of exterior seal ring on the fixing above-mentioned conducting rod of above-mentioned gland or packing ring.

4. enhancement mode double sealing structure transformer sleeve pipe according to claim 3 is characterized in that above-mentioned mucilage binding groove is the multiple tracks groove.

5. enhancement mode double sealing structure transformer sleeve pipe according to claim 4 is characterized in that the adhesive that injects above-mentioned mucilage binding groove is the epoxy glue mixture.