CN214672171U - Totally-enclosed transformer bushing pile head - Google Patents

Abstract

The utility model relates to a totally closed transformer bushing pile head, including high-voltage wire, copper tinned joint and the conversion socket that from top to bottom sets gradually, the inside watchband that is provided with copper tinned joint connection of conversion socket touches the finger, conversion socket below is provided with high-voltage bushing and is located the sleeve pipe binding post at high-voltage bushing top, the sleeve pipe binding post outside is provided with cold shrink pipe for the conversion socket touches finger and sleeve pipe binding post contact rather than grafting cooperation and messenger's watchband, cold shrink intraductal bottom surface is equipped with the sealed bed course of buffering. The utility model discloses simple structure, design benefit, convenient to use, with transformer high-voltage electricity part and external isolated completely when realizing quick plug-in operation, played better waterproof, sealed, dampproofing effect.

Description

Totally-enclosed transformer bushing pile head

Technical Field

The utility model relates to a totally closed transformer bushing pile head.

Background

The existing transformer is easy to cause branch foreign matters and short circuit of small animals due to the fact that a high-voltage sleeve pipe pile head is exposed, and therefore line power failure is caused. At present, power supply companies mainly adopt a method of additionally installing a plastic insulating cover or a rubber sleeve, but gaps still exist, the gaps cannot be completely closed, and in addition, the conditions of rain, moisture and the like can cause moisture to be accumulated at the gaps to cause insulation failure or cause partial discharge breakdown. On the other hand, the connection quality of the high-voltage bushing of the distribution transformer and the overhead line depends on the skill level of field constructors, the installation period is long, and the reliability is not high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses improve above-mentioned problem, promptly the to-be-solved technical problem of the utility model is to provide a totally closed transformer bushing pile head, the installation is convenient and the construction degree of difficulty is little, improves waterproof ability simultaneously.

The utility model discloses a constitute like this, it is including the high-voltage wire, the copper tinning joint and the conversion socket that from top to bottom set gradually, the inside watchband that is provided with copper tinning articulate of conversion socket touches the finger, conversion socket below is provided with high-tension bushing and is located the sleeve pipe binding post at high-tension bushing top, the sleeve pipe binding post outside is provided with cold shrink pipe for the conversion socket touches finger and sleeve pipe binding post contact rather than grafting cooperation and messenger's watchband, cold shrink intraductal bottom surface is equipped with the buffering seal cushion course.

Further, the conversion socket is established at the outside limit nut of solenoid socket including end cover nut, solenoid socket and the cover that from top to bottom sets gradually, and high-pressure wire runs through end cover nut middle part, the end cover nut comprises lid and screw retaining ring, the same and the outside of screw retaining ring and solenoid socket's diameter all is equipped with the external screw thread for will support and lean on end cover nut, solenoid socket fixed connection together through locking limit nut.

Furthermore, support bolts are arranged on two sides of the lower portion of the sleeve wiring terminal and located above the buffer sealing cushion layer.

Further, the inner wall of the cold-shrink tube is provided with an inner clamping groove, and the outer wall of the conversion socket is provided with an outer clamping groove matched with the inner clamping groove in a clamping mode.

Further, the high-voltage wire end portion is externally provided with a protective sleeve, the end cover nut sleeve is arranged outside the protective sleeve, and the copper tinning joint is located inside the protective sleeve.

Compared with the prior art, the utility model discloses following beneficial effect has: the device is simple in structure and reasonable in design, and the conversion socket is connected with the bushing wiring terminal on the high-voltage bushing by plugging the conversion socket, so that the quick plugging connection is realized; the charged part is isolated from the outside through the totally-enclosed high-voltage sleeve pile head, namely a buffer sealing gasket layer is arranged between the top of the high-voltage sleeve and the cold shrinkage tube to form a sealing structure, and the sealing structure can eliminate foreign matter short circuit and electric shock hidden danger, simultaneously achieve better waterproof and moistureproof effects and improve safety; in addition, all parts of the conversion socket are in standardized connection design, factory prefabrication measures can be adopted, tool-free disassembly and assembly can be realized, the installation and maintenance are convenient, and the transformer can be prevented from being damaged due to heating of the sleeve joint caused by poor construction process.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the conversion socket, the high-voltage wire and the watch band contact finger according to the embodiment of the present invention;

in the figure: 1-high-voltage wire, 2-copper tinned joint, 3-conversion socket, 31-end cap nut, 311-cover body, 312-threaded retainer ring, 32-solenoid socket, 33-limit nut, 4-watchband contact finger, 5-high-voltage bushing, 6-bushing terminal, 7-cold shrink tube, 8-buffer sealing cushion layer, 9-support bolt and 10-protective sleeve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Example 1: as shown in fig. 1-2, in the embodiment, a totally-enclosed transformer bushing pile head is provided, including high-voltage wire 1, copper tinned joint 2 and the conversion socket 3 that set gradually from top to bottom, conversion socket inside is provided with the watchband that connects with copper tinned joint and touches finger 4, conversion socket below is provided with high-voltage bushing 5 and is located the sleeve binding post 6 at high-voltage bushing top, the sleeve binding post outside is provided with cold shrink pipe 7 for conversion socket rather than pegging graft the cooperation and make the watchband touch finger and sleeve binding post contact, cold shrink intraductal bottom surface is equipped with buffering seal cushion 8, and buffering seal cushion is located the high-voltage bushing top, and buffering seal cushion forms a seal structure with high-voltage bushing.

The high-voltage lead is connected with the conversion socket through the prefabricated copper tinning connector, the conversion socket is inserted into the cold shrinkage pipe, the watchband contact fingers inside the conversion socket are communicated with the sleeve connecting terminal in a contact mode, and the conversion socket is connected or disconnected with the sleeve connecting terminal at the top of the high-voltage sleeve through the plugging conversion socket.

The high-voltage lead and the bushing wiring terminal are connected together through the watchband contact finger, and the bushing wiring terminal has strong current carrying capacity and anti-breaking impact performance.

An inner clamping groove is formed in the inner wall of the cold shrink tube, and an outer clamping groove matched with the inner clamping groove in a clamped mode is formed in the outer wall of the conversion socket.

In this embodiment, the conversion socket 3 includes the end cap nut 31, the solenoid socket 32 and the limit nut 33 that the cover set up in the outside of the solenoid socket from top to bottom in proper order, and the high-voltage conductor runs through the end cap nut middle part, the end cap nut comprises lid 311 and screw retaining ring 312, and the lid cross-section is "protruding" style of calligraphy.

The diameter of the threaded retainer ring is the same as that of the solenoid socket, the outer side surfaces of the threaded retainer ring and the solenoid socket are provided with external threads, the inner ring of the limit nut is provided with internal threads matched with the external threads, and the end cover nut and the solenoid socket which are abutted together are fixedly connected by locking the limit nut in a threaded matching mode; the external thread of end cover nut and limit nut's internal thread design play the effect of preventing to loosen after the anticlockwise tightening of left-handed screw (anti-silk), and limit nut and end cover nut are used for guaranteeing that the screw retaining ring is rotatory to suitable position.

When the watch strap is used, the lower part of the threaded check ring of the end cover nut is aligned with the upper part of the solenoid socket, the limit nut is rotated to lock and fix the threaded check ring and the solenoid socket together, and the watch strap contact finger is positioned inside the threaded check ring or the solenoid socket.

The screw tube socket and the end cover nut are made of high-strength plastic alloy, so that better ageing resistance is guaranteed, all metal exposed parts of the high-voltage sleeve pile head are fully sealed by adopting cold-shrink tube coating, and sealing and moisture-proof effects are achieved. Alternatively, other self-curing insulating materials may be used to seal and secure to the transformer bushing.

In this embodiment, support bolts 9 are arranged on two sides of the lower portion of the bushing terminal, and the support bolts are located above the cushion seal.

The arrangement of the supporting bolt can enable the conversion socket to play a certain supporting role after being inserted into the cold shrinkage pipe; the arrangement of the buffer sealing cushion layer can play a role of sealing and water proofing, and meanwhile, the buffer sealing cushion layer has a certain buffer flexible role, so that the process of inserting the conversion socket into the cold shrink tube has certain elasticity, hard direct collision cannot occur, and clamping is not facilitated; after the conversion socket is inserted into the cold shrink tube, a certain gap exists between the bottom of the conversion socket and the bottom of the cold shrink tube, and the buffer sealing cushion layer and the support bolt can play a role in filling the gap.

In this embodiment, high voltage wire tip outside is equipped with protective sheath 10, the protective sheath outside is established to the end cover nut cover, the copper tinning joint is located inside the protective sheath.

In this embodiment, the connection between the upper part of the end cap nut and the high-voltage wire is sealed by an insulating waterproof material or a sealing ring, so as to enhance the waterproof effect.

The watchband touches the finger and is connected 10kV overhead high tension conductor and sleeve pipe binding post, realizes quick plug-in operation, and the watchband touches the finger and hides in the screw retaining ring to isolated high voltage conductive part and external relation.

The utility model discloses a transformer bushing pile head adopts totally closed, standardized, the design of all insulation joint for transformer high-voltage electricity takes part and external world to keep apart completely, when getting rid of the potential safety hazard, has also played better waterproof, sealed, dampproofing effect. Preferably, the part (namely the sleeve pipe pile head) of the conversion socket is prefabricated in a factory mode, and equipment can be installed on site only by completing plug connection, so that the site installation process is simplified, the risk of poor construction process is reduced, and the conversion socket is simple to install and high in reliability.

Example 2: the socket can be made into a structure similar to a cable stress cone which can be butted with an overhead conductor in advance, an internal conical surface and a matched connector base form a tightly-matched conical surface structure, hydrophobic silicone grease is adopted to extrude out internal air, insulation and sealing performance are guaranteed, meanwhile, an on-load tapping bolt with the maximum bearing current of 630A is contained in the connector, and the connector is connected with a high-voltage sleeve base through an electric connection point.

Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Because numerical value is more, can't be exhaustive, so the utility model discloses just disclose some numerical values with the illustration the technical scheme of the utility model to, the numerical value that the aforesaid was enumerated should not constitute right the utility model discloses create the restriction of protection scope.

Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).

In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated.

The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that: the invention can be modified or equivalent substituted for some technical features; without departing from the spirit of the present invention, it should be understood that the scope of the claims is intended to cover all such modifications and variations.

Claims (5)

1. The utility model provides a totally closed transformer bushing pile head, its characterized in that, includes high-voltage wire, copper tinned joint and the conversion socket that from top to bottom sets gradually, the inside watchband that is provided with copper tinned joint connection of conversion socket touches the finger, conversion socket below is provided with high-voltage bushing and is located the sleeve pipe binding post at high-voltage bushing top, the sleeve pipe binding post outside is provided with cold shrink pipe for conversion socket touches finger and sleeve pipe binding post contact rather than grafting cooperation and messenger's watchband, cold shrink intraductal bottom surface is equipped with the buffering seal cushion course.

2. The totally-enclosed transformer bushing pile head according to claim 1, characterized in that, the conversion socket comprises an end cap nut, a solenoid socket and a limit nut, wherein the end cap nut, the solenoid socket and the limit nut are sequentially arranged from top to bottom, the limit nut is sleeved outside the solenoid socket, the high-voltage wire penetrates through the middle of the end cap nut, the end cap nut comprises a cover body and a thread retainer ring, the thread retainer ring has the same diameter as the solenoid socket, and the outer side of the thread retainer ring is provided with an external thread for fixedly connecting the end cap nut and the solenoid socket which are abutted together by the locking limit nut.

3. The fully-enclosed transformer bushing pile head according to claim 1, wherein support bolts are arranged on two sides of the lower portion of the bushing terminal, and the support bolts are located above the buffer sealing cushion layer.

4. The totally-enclosed transformer bushing pile head according to claim 1, wherein the inner wall of the cold-shrink tube is provided with an inner clamping groove, and the outer wall of the conversion socket is provided with an outer clamping groove in clamping fit with the inner clamping groove.

5. The fully-enclosed transformer bushing pile head according to claim 2, wherein a protective sleeve is arranged outside the end portion of the high-voltage wire, the end cap nut is sleeved outside the protective sleeve, and the copper tinning joint is located inside the protective sleeve.

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