CN201820650U - High-voltage insulating pull rod applied on high-voltage circuit breaker - Google Patents
High-voltage insulating pull rod applied on high-voltage circuit breaker Download PDFInfo
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- CN201820650U CN201820650U CN2010202767091U CN201020276709U CN201820650U CN 201820650 U CN201820650 U CN 201820650U CN 2010202767091 U CN2010202767091 U CN 2010202767091U CN 201020276709 U CN201020276709 U CN 201020276709U CN 201820650 U CN201820650 U CN 201820650U
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- bar
- insulating joint
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Abstract
The utility model discloses a high-voltage insulating pull rod applied on a high-voltage circuit breaker, comprising an insulating rod and an insulating joint sheathed at the end of the insulating rod. The high-voltage insulating pull rod is characterized in that the insulating rod and the insulating joint are respectively formed by tuning of an epoxy glass fibers extracting rod; the insulating joint is provided with an umbrella skirt; connectors for connecting the insulating rod are installed on the two ends of the insulating joint; and the outer side of the connector is further poured with an epoxy glass fiber sleeve. Therefore, the high-voltage insulating pull rod is formed by adopting the tuning of the epoxy glass fibers extracting rod for the insulating rod and the insulating joint, thus increasing the tensile strength of the insulating pull rod; simultaneously, the outer side of the connector is poured with the epoxy glass fiber sleeve, therefore, the stability of the connectors is increased, the fracture of the connecters is avoided, further the tensile strength reaches to 60KN, and the requirements for tensile strength needed by various domestic circuit breakers are met, and the performance of the high-voltage insulating pull rod has certain stability.
Description
Technical field
The utility model relates to the electric device technical field, what be specifically related to is a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out.
Background technology
Insulated tension pole is the critical elements that circuit breaker transmits energy and power and insulation, it is the tie of contact breaker body part and mechanism's part, its electric property and mechanical performance are all had very high requirement, and the quality of insulated tension pole quality directly has influence on the reliability of circuit breaker and the safe operation of electrical network.Generally speaking, the insulated tension pole material adopts epoxy resin to cast, and in primary cut-out, insulated tension pole is stressed when work to be instantaneous sudden applied load, and counter-force is a varying load in the motion process, because all factors, insulated tension pole also is subjected to certain twisting stress.Because insulated tension pole is a variable cross-section, the situation that exists stress to concentrate; In dynamic motion, parameter such as each point displacement on the pull bar, stressed, stress all is the function of time, changes over time.And in product design, only noted insulated tension pole not being carried out the stressing conditions of insulated tension pole when static dynamic analog and calculate.
The homemade isolating switch shackle rod that adopts in the existing electric power system, it comprises insulated tension pole and insulating joint, the two ends of this insulated tension pole are installed insulating joint respectively by screw thread, on insulating joint, be provided with full skirt, should existing insulating joint be to form by the epoxide resin material disposal pouring, it is 10～20kN that the insulated tension pole of this structure and insulating joint generally bear pulling force, and the interface that is connected with insulating joint at insulated tension pole is often too big owing to the insulated tension pole pulling force, the interface of insulating joint is pulled, influence pull bar stability.Especially when the pull bar rotating speed is too fast, the pull bar thermal endurance is relatively poor, during instantaneous sudden applied load, screw thread on the insulating bar produces bigger shearing force, the screw thread that is connected between insulated tension pole and the joint is deformed, cause joint to come off and the fracture of connector interface from insulating bar, thereby cause high-voltage switch gear pull bar stretch bending even fracture, or will support that porcelain vase severs, its consequence is very serious, switchgear is damaged, and the diffusing sheet four of insulator flies, and jeopardizes other electric equipment, often causes large-area power-cuts, influence the safe operation of electrical network, cause heavy economic losses to country.
The utility model content
At the deficiency on the prior art, the utility model purpose is to be to provide a kind of Stability Analysis of Structures, little to material autoclasia performance, tensile strength is big is applied to High-Voltage Insulation pull bar on the primary cut-out, avoid the interface fracture of joint and pulled phenomenon, improve the stability of pull bar, make it safe and reliable.
To achieve these goals, the technical scheme that the utility model is is: a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out, comprise insulating bar and with the insulating joint of insulating bar end socket, it is characterized in that, described insulating bar and insulating joint all form by the turning of epoxy glass fiber leading-drawing rod, described insulating joint is provided with full skirt, be equipped with the interface that connects insulated tension pole at the insulating joint two ends, the outside of described interface also is cast with the epoxy glass fiber pipe box, increase the stable of interface, avoided splitting of interface.
Aforesaid a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out wherein, also is connected with inserts by the spiral device in the described insulation interface; Described inserts outer surface is provided with the external spiral groove suitable with the spiral device, make and the suitable helical groove of spiral device on the described insulation interface inner surface, in the helical groove of this inserts by the effect backspin incoming interface of external spiral groove and spiral device; The lower surface that is the cross section of described spiral device places in the helical groove, its upper surface places in the external spiral groove of inserts, improve the stability of pull bar, make it safe and reliable, make the active force that acts on the pull bar on spring, form shearing force simultaneously, reduced material autoclasia performance, increased the tensile strength of pull bar.
Aforesaid a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out, wherein, the end of described insulating bar is connected with insulating joint by inserts, and described inserts is connected with the end of insulating bar by screw thread.
Aforesaid a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out wherein, scribbles insulating varnish on the described insulating joint outer surface.
According to described a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out, wherein, also be filled with bonding agent between described spiral device and the insulating joint, further improved adhesive strength and sealing property between joint and the inserts.
According to described a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out, wherein, described bonding agent is an epoxy resin.
According to described a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out, wherein, described spiral device is the high wire spring of intensity, this spring places in the inside spin groove of insulating joint by the mode of spiral, described insulating joint places on the spring by spiral way, thereby insulating joint firmly is connected on the insulating bar.
The utility model adopts the turning of epoxy glass fiber leading-drawing rod to form insulating bar and insulating joint, increased the tensile strength of insulated tension pole, simultaneously, the interface outside at insulating joint is cast with the epoxy glass fiber pipe box, increased the steadiness of interface, avoided the fracture of interface, made its tensile strength reach 60KN, satisfy the requirement of required hot strength on all kinds of states inner breaker, its performance has certain stability.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is a sectional structure schematic diagram of the present utility model;
Fig. 2 is the cutaway view of insulating joint of the present utility model;
Fig. 3 is the structural representation of inserts of the present utility model;
Fig. 4 is the structural representation that insulating joint of the present utility model is installed inserts.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
Referring to Fig. 1, the utility model is the High-Voltage Insulation pull bar that is applied on the primary cut-out, the insulating joint 20 that it comprises insulating bar 10 and is installed in insulating bar 10 ends.
In the present embodiment, insulating joint 20 and insulating bar 10 all form by the high epoxy glass fiber leading-drawing rod turning of tension intensity, turning has full skirt 22 on insulation pull head 20, its two ends all are processed with the interface 21 that insulated tension pole is installed, these interface 21 inner surfaces are equipped with inserts 30 by spiral device 50, cast epoxy glass fiber pipe box 40 on interface 21 outer surfaces, be used to increase the steadiness of interface 21, interface 21 fractures have been avoided, increase the tensile strength of insulated tension pole 10, its tensile strength is reached more than the 60kN.
Referring to Fig. 2, on interface 21 inner surfaces, process helical groove 23, the spiral device 50 (referring to Fig. 4) adaptive with it is installed in helical groove 23, this spiral device 50 places in the helical groove 23 by the mode of spiral, between spiral device 50 and insulating joint 20, be injected with the bonding agent of strengthening adhesive strength and sealing effectiveness, the epoxide-resin glue of bonding agent of the present utility model, simultaneously also other bonding agent be can use, sealing property and adhesive strength between insulating joint 20 and the insulating bar 10 further improved.
In the present embodiment, spiral device 50 is guaranteed the steadiness that insulating bar 10 is connected with insulating joint 20 for having sufficient intensity and flexible firm silk spring; The active force that acts on insulating bar 10 and the insulating joint 20 is transferred to respectively on firm silk spring, formed a cross shear, avoided the destruction of material self, strengthened the tensile strength of pull bar at wire spring.
It should be noted that, just the lower surface of silk spring cross section places in the helical groove 23, and pass through adhesive securement, its upper surface protrudes the insulation system inner surface, it forms and protrudes screw thread, be processed with the external spiral groove 31 (referring to Fig. 3) suitable with spiral device 50 at inserts 30 outer surfaces, the protrusion screw threads that form by firm silk spring in this interface 21 screw in inserts 30 in a spiral manner.
End at insulating bar 10 is processed with screw thread, is provided with the adaptive thread groove of end thread of insulating bar 10 in the inserts 30, and insulating bar 10 is installed in the inserts 30 by screw thread, thereby insulating joint 20 firmly is connected on the insulating bar 10; At this moment, spiral device 50 is arranged between insulating bar 10 and the insulating joint 20, forms to stop the block piece that insulating joint 20 comes off, and has avoided because insulating joint 20 comes off and causes the generation of accident.
It should be noted that at the equal brushing insulating varnish of the outer surface of the outer surface of insulating joint 20 and full skirt 22, increase smoothness.When wire spring is installed, brushing bonding agent in the external spiral groove 31 of inserts 30, screwing wire spring then puts in the external spiral groove 31, brushing bonding agent on the outer surface of wire spring and interface 21 inner surfaces again, this inserts 30 screws in the interface 21 by wire spring, brushing bonding agent in simultaneously on the screw thread of the end of insulating bar 10 has strengthened the adhesive strength of inserts 30 and insulating bar 10.When needs are installed insulating joint 20, the user can be installed on insulating bar 10 ends by its inner inserts 30, it is by the effect of bonding agent, improve adhesive strength and sealing property between insulating joint 20 and the insulating bar 10, avoided because poor sealing, cause insulating bar 10 to puncture and make the generation of its electric conduction phenomena, and influence the safe operation of whole electrical network.
Based on above-mentioned, the utility model is by pouring into a mould one deck epoxy glass fiber pipe box 40 in interface 21 outsides of insulating joint 20, avoided because insulating bar 10 pulling force cause the fracture of interface 21 too greatly, increased pull bar tensile strength, it is reached more than the 60KN, simultaneously by the spiral device inserts 30 is installed, significantly reduced the load of insulating bar 10 and the destructiveness of self material at interface 21, make its transfer of shear forces to elastic element, improved shear strength.
Simultaneously, its dispersiveness has seldom solved the problem of high-voltage switch gear pull bar easy fracture, satisfies the requirement of required hot strength on all kinds of states inner breaker.
In addition, during bell and spigot joint 21, in insulating bar 10 ends and spiral device 50 installation processes, all scribble bonding agent outside, further improved sealing property and adhesive strength height between insulating joint 20 and the insulating bar 10.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. High-Voltage Insulation pull bar that is applied on the primary cut-out, comprise insulating bar and with the insulating joint of insulating bar end socket, it is characterized in that, described insulating bar and insulating joint all form by the turning of epoxy glass fiber leading-drawing rod, described insulating joint is provided with full skirt, be equipped with the interface that connects insulated tension pole at the insulating joint two ends, the outside of described interface also has the epoxy glass fiber pipe box.
2. a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out according to claim 1 is characterized in that, also is connected with inserts by the spiral device in the described interface; Described inserts outer surface is provided with the external spiral groove suitable with the spiral device, makes on the described interface inner surface and the suitable helical groove of spiral device, and described inserts screws in the helical groove of interface by external spiral groove and spiral device.
3. a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out according to claim 2 is characterized in that the end of described insulating bar is connected with insulating joint by inserts, and described inserts is connected with the end of insulating bar by screw thread.
4. according to any described a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out of claim 1 to 3, it is characterized in that, scribble insulating varnish on the described insulating joint outer surface.
5. according to claim 2 or 3 any described a kind of High-Voltage Insulation pull bars that are applied on the primary cut-out, it is characterized in that, also be filled with bonding agent between described spiral device and the insulating joint.
6. a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out according to claim 5 is characterized in that described bonding agent is an epoxide-resin glue.
7. a kind of High-Voltage Insulation pull bar that is applied on the primary cut-out according to claim 2 is characterized in that described spiral device is a wire spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202767091U CN201820650U (en) | 2010-07-30 | 2010-07-30 | High-voltage insulating pull rod applied on high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202767091U CN201820650U (en) | 2010-07-30 | 2010-07-30 | High-voltage insulating pull rod applied on high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201820650U true CN201820650U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202767091U Expired - Fee Related CN201820650U (en) | 2010-07-30 | 2010-07-30 | High-voltage insulating pull rod applied on high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201820650U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109872850A (en) * | 2019-01-29 | 2019-06-11 | 西安交通大学 | A kind of pulling fiberglass rod double end metal external thread pull rod |
| WO2021031782A1 (en) * | 2019-08-16 | 2021-02-25 | 南京智达电气设备有限公司 | Novel insulating pull rod |
-
2010
- 2010-07-30 CN CN2010202767091U patent/CN201820650U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109872850A (en) * | 2019-01-29 | 2019-06-11 | 西安交通大学 | A kind of pulling fiberglass rod double end metal external thread pull rod |
| WO2021031782A1 (en) * | 2019-08-16 | 2021-02-25 | 南京智达电气设备有限公司 | Novel insulating pull rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |