CN103971865A - Discharge gap cross-arm insulator - Google Patents

Discharge gap cross-arm insulator Download PDF

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Publication number
CN103971865A
CN103971865A CN201310038985.2A CN201310038985A CN103971865A CN 103971865 A CN103971865 A CN 103971865A CN 201310038985 A CN201310038985 A CN 201310038985A CN 103971865 A CN103971865 A CN 103971865A
Authority
CN
China
Prior art keywords
knee
carrying
piece
puncture
core bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310038985.2A
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Chinese (zh)
Inventor
王哲斐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI ZHAOBANG ELECTRICAL MATERIAL CO Ltd
Original Assignee
SHANGHAI ZHAOBANG ELECTRICAL MATERIAL CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANGHAI ZHAOBANG ELECTRICAL MATERIAL CO Ltd filed Critical SHANGHAI ZHAOBANG ELECTRICAL MATERIAL CO Ltd
Priority to CN201310038985.2A priority Critical patent/CN103971865A/en
Publication of CN103971865A publication Critical patent/CN103971865A/en
Pending legal-status Critical Current

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Abstract

A discharge gap cross-arm insulator is applied to overhead insulated lines in a distribution network. The insulated lines are low in lightning withstand level; failures caused by direct lightning or indirect lightning cannot be overcome by the use of the original line insulators and fittings; line breakage by lightning, flashover damage of the insulators and burst and tripping of porcelain insulators occur frequently, and normal operation of the distribution network is severely influenced. The discharge gap cross-arm insulator is a post insulator which is used for protecting the overhead insulated lines from line breakage by lightning and flashover damage of the insulators. A special metal electrode is fitted to the high-voltage end. A piercing line insulating layer or stripping line insulating layer is fixed to the special metal electrode. The discharge gap cross-arm insulator is capable of guiding arc root of power-frequency continuous current, generated after lightning flashover, to the specific part, and the lines are protected from arc burn and flashover damage of the insulators. The discharge gap cross-arm insulator is simple to mount and reliable in performance.

Description

Discharging gap cross arm insulator
Technical field:
The present invention is applied on the built on stilts insulated circuit of power distribution network, and protection line insulation wire is blown by thunderbolt, reduces the tripping operation causing because of thunderbolt, prevents that insulator arc-over from damaging, and improves power supply effect.
Background technology:
The high speed development of national economy is promoting electric power industry development; But, the extensive use of line insulation is imperative, and be limited to the resistance to thunder deficiency of insulated circuit, original insulator and line hardware cannot solve the fault that direct thunder or induction thunder cause, and thunderbolt ablation insulated conductor, insulator arc-over damage, the fried phenomenon such as strong of porcelain insulator has become electric power system and urgently solved problem; Device of the present invention is intended to address the above problem, and is suitable for the insulating supporting of the built on stilts insulated circuit of power distribution network, has that the ablation insulated conductor that prevents from being struck by lightning, insulator arc-over damage, porcelain insulator is fried strong and reduce the function of lightning stroke trip; The electric armour clamp of this device has puncture wire insulation to obtain the function of energising, and without exploiting troublesomely wire insulation, the puncture technique of wire can also be avoided core infiltration corrosion, and easy construction is reliable, and small investment is produced effects obviously.
Summary of the invention:
Title of the present invention-----discharging gap cross arm insulator; When being struck by lightning, causes cross arm insulator for solving on electrical network insulated overhead line that insulator arc-over, insulated conductor blow, line tripping.
This device by torque nut assembly (1), puncture piece (2), puncture seat (3), carrying core bar (4), core bar sheath (5), carrying connect piece (6), be subject to arc column (7), striking knee (8), knee sheath (9) form; Two ends of carrying core bar respectively contractive pressures fastening puncture seat connect piece with carrying, contractive pressure technique advanced person, bearing capacity is large, carrying core bar is covered by core bar sheath mold pressing parcel, is provided with several full skirts for meeting creepage distance, insulating properties is safe and reliable; Striking knee is high potential, and puncture piece pierces through wire insulation with several ratchets in puncture seat, obtains electrical connection, and its compact conformation is reasonable, easy construction; Two torque nut assemblies are screwed into two pieces of bolts on puncture seat, and are alternately screwed onto torque nut assembly first half breaking releasing, have ensured that ratchet pierces through wire insulation; On the company's of carrying piece, be bolted with and be subject to arc column, being subject to arc column is electronegative potential (striking knee is high potential), striking knee has just become discharge channel with being subject to the air gap between arc column, in the time that thunder and lightning overvoltage exceedes insulation obstruction certain value, between high electronegative potential, form short circuit flashover electric discharge, I have protected the ablation of insulated conductor the burning of the power frequency arc continuing.
Brief description of the drawings:
Fig. 1: torque nut component drawings.
Fig. 2: puncture piece schematic diagram.
Fig. 3: puncture seat schematic diagram.
Fig. 4: carrying core bar schematic diagram.
Fig. 5: core bar sheath schematic diagram.
Fig. 6: carrying connects piece schematic diagram.
Fig. 7: be subject to arc column schematic diagram.
Fig. 8: striking knee schematic diagram.
Fig. 9: knee sheath schematic diagram.
Figure 10: discharging gap cross arm insulator assembling A figure.
Figure 11: discharging gap cross arm insulator assembling B figure.
Embodiment:
In this device, the length of carrying core bar (4) should meet its insulation property requirement, and the ERC material that its HTHP is reinforced, has good acid resistance, can meet mechanical load requirement; Two ends of carrying core bar (4) respectively contractive pressures fastening puncture seat (3) connect piece (6) with carrying, carry core bar (4) and connect spreading out of piece (6) with puncture seat (3) and carrying and meet place, covered by core bar sheath (5) mold pressing parcel, and adopt high temperature vulcanized glue high pressure sealing, prevent air and rain erosion; One side opening (3.2) contractive pressure of puncture seat (3) fastening striking knee (8), striking knee (8) is covered by knee sheath (9) mold pressing parcel, but must locate to stay an electric discharge through hole in its bulb (8.2); Puncture piece (2) is all equipped with several ratchets with puncture seat (3), insulated conductor is contained in therebetween, alternately be screwed to respectively first half breaking releasing by two torque nut assemblies (1), guarantee that ratchet pierces through wire insulation and obtains electrical connection, make striking knee (8) band electric forming high potential; The screw (6.3) of the company's of carrying piece (6) is bolted with and is subject to arc column (7), and be in same plane with striking knee (8), thus, striking knee (8) has just become discharge channel with being subject to the air gap between arc column (7), in the time that thunder and lightning overvoltage exceedes insulation obstruction certain value, between high electronegative potential, form short circuit flashover electric discharge, I have protected the ablation of insulated conductor the burning of the power frequency arc continuing.
Discharging gap cross arm insulator is arranged on cross arm of tower, has on demand 0 °, 15 °, 30 °, 45 °, 90 ° a few class mounting meanss; Carrying connects on piece (6) has location hole (6.4) and screw (6.2), simple installation.
Figure 11 is another kind of assembling mode.

Claims (5)

1. one kind is applied on the built on stilts insulated circuit of power distribution network, and the discharging gap cross arm insulator of insulated conductor is blown in the clamping wires that can insulate, raising line insulation grade, prevention thunderbolt.It by torque nut assembly (1), puncture piece (2), puncture seat (3), carrying core bar (4), core bar sheath (5), carrying connect piece (6), be subject to arc column (7), striking knee (8) and knee sheath (9) form.Its feature: puncture seat (3) and carrying connect piece (6) respectively contractive pressure be fastened on two ends of carrying core bar (4), core bar sheath (5) covering protection carrying core bar (4), one side opening contractive pressure of puncture seat (3) fastening striking knee (8), the part that exposes of striking knee (8) is all wrapped up by knee sheath (9), two borehole jacks of puncture piece (2) enter two pieces of bolts of puncture seat (3), form the groove cave of clamping insulated conductor, two cover torque nut assemblies (1) are screwed into respectively two pieces of bolts, be spirally connected by arc column (7) and be fastened on the screw that carrying connects piece (6), carrying connects piece (6) has two through holes and cross arm of tower location to be spirally connected fastening.
2. its feature of discharging gap cross arm insulator according to claim 1-----, carrying core bar (4) is made by the reinforced ERC material of HTHP, has good acid resistance, and has enough mechanical load intensities; Two ends of carrying core bar (4) respectively contractive pressures fastening puncture seat (3) connect piece (6) with carrying, contractive pressure technique advanced person, bearing capacity is large; Carry core bar (4) and connect spreading out of piece (6) with puncture seat (3) and carrying and meet place, covered by core bar sheath (5) mold pressing parcel, two ends adopt high temperature vulcanized glue high pressure sealing, and sheath wall thickness meets international IEC standard.
3. its feature of discharging gap cross arm insulator according to claim 1-----, one side opening contractive pressure of puncture seat (3) fastening striking knee (8), it exposes part by the covering of knee sheath (9) mold pressing parcel, and wherein the bulb (8.1) of striking knee (8) is located not cover for electric discharge.
4. its feature of discharging gap cross arm insulator according to claim 1-----, two pieces of bolts of puncture seat (3) are inserted in two holes (2.1) of puncture piece (2), form the groove cave of clamping insulated conductor, in the arc groove of puncture piece (2) and puncture seat (3), several ratchets are housed, when clamping insulated conductor, be screwed into respectively two pieces of bolts of puncture seat (3) by two torque nut assemblies (1), the first half breaking releasing of torque nut assembly (1), at this moment several ratchets have penetrated insulating barrier and the core touching of wire, make striking knee (8) band electric forming high potential.
5. its feature of discharging gap cross arm insulator according to claim 1-----, be spirally connected by arc column (7) and be fastened on the screw of the company's of carrying piece (6), and locate at grade with striking knee (8), be subject to (8.2) of arc column (7) and striking knee (8) to form short circuit flashover electric discharge between high electronegative potential, avoid insulated conductor to be blown.
CN201310038985.2A 2013-01-24 2013-01-24 Discharge gap cross-arm insulator Pending CN103971865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310038985.2A CN103971865A (en) 2013-01-24 2013-01-24 Discharge gap cross-arm insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310038985.2A CN103971865A (en) 2013-01-24 2013-01-24 Discharge gap cross-arm insulator

Publications (1)

Publication Number Publication Date
CN103971865A true CN103971865A (en) 2014-08-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310038985.2A Pending CN103971865A (en) 2013-01-24 2013-01-24 Discharge gap cross-arm insulator

Country Status (1)

Country Link
CN (1) CN103971865A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105895276A (en) * 2014-10-13 2016-08-24 上海兆邦电力器材有限公司 Discharge gap post porcelain insulator
CN113793737A (en) * 2021-08-31 2021-12-14 固力发电气有限公司 Anti-crack anti-corrosion insulator and forming device thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04137382A (en) * 1990-09-26 1992-05-12 Sumitomo Electric Ind Ltd Lighting arrestor for power transmission line
CN201130571Y (en) * 2007-06-15 2008-10-08 上海兆邦电力器材有限公司 Lightning protection supporting insulator
CN102354588A (en) * 2011-08-09 2012-02-15 王哲斐 Lightning protection supporting insulator for contact network

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04137382A (en) * 1990-09-26 1992-05-12 Sumitomo Electric Ind Ltd Lighting arrestor for power transmission line
CN201130571Y (en) * 2007-06-15 2008-10-08 上海兆邦电力器材有限公司 Lightning protection supporting insulator
CN102354588A (en) * 2011-08-09 2012-02-15 王哲斐 Lightning protection supporting insulator for contact network

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105895276A (en) * 2014-10-13 2016-08-24 上海兆邦电力器材有限公司 Discharge gap post porcelain insulator
CN113793737A (en) * 2021-08-31 2021-12-14 固力发电气有限公司 Anti-crack anti-corrosion insulator and forming device thereof

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WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20140806

WD01 Invention patent application deemed withdrawn after publication