CN103542171A - Special tool for replacing rubber ring of oil drain valve of transformer - Google Patents

Special tool for replacing rubber ring of oil drain valve of transformer Download PDF

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Publication number
CN103542171A
CN103542171A CN201310501713.1A CN201310501713A CN103542171A CN 103542171 A CN103542171 A CN 103542171A CN 201310501713 A CN201310501713 A CN 201310501713A CN 103542171 A CN103542171 A CN 103542171A
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CN
China
Prior art keywords
bowl
handle
special tool
casing pipe
bowls
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Granted
Application number
CN201310501713.1A
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Chinese (zh)
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CN103542171B (en
Inventor
黄剑
琚军
徐沁
陈易浩
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State Grid Corp of China SGCC
Quzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Quzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd
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Application filed by State Grid Corp of China SGCC, Quzhou Power Supply Co of State Grid Zhejiang Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201310501713.1A priority Critical patent/CN103542171B/en
Publication of CN103542171A publication Critical patent/CN103542171A/en
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Publication of CN103542171B publication Critical patent/CN103542171B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/14Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
    • B25B27/28Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same positioning or withdrawing resilient bushings or the like

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Abstract

The invention discloses a special tool for replacing a rubber ring of an oil drain valve of a transformer. The special tool comprises a top plate, a top bowl with a bowl handle and two screw rods arranged on two sides of the top plate. Tail portions of rod bodies of the two screw rods are respectively screwed with a nut, a casing pipe perpendicular to the top plate is fixedly arranged in the middle of the top plate, the bowl handle of the top bowl extends into the casing pipe, an end face of a free end of the bowl handle is abutted to a top rod head of a top rod screwed in from the other end of the casing pipe, and the free end of the top rod as a connecting end of the handle is exposed outside the casing pipe. After the casing pipe and the top rod are added, the bowl handle of the top bowl extends into the casing pipe and is abutted to the top rod only in a point contact manner. During operation, the casing pipe has functions of both guiding and connecting and relies on the top rod for pushing the top bowl to move forward, what's more, the top bowl and the top plate are in a split structure, influence to axial jacking force of the top bowl due to out-sync screw-in of the two screw rods is relatively reduced, a valve element is not jacked slantingly and furthermore oil leakage of the transformer is not caused.

Description

Transformer body fuel outlet valve rubber circle is changed special tool
Technical field
The present invention relates to a kind of transformer repair outfit, relate in particular to a kind of power transformer body fuel outlet valve rubber circle and change special tool.
Background technique
Transformer is the important constituent element of electric power facility, and its normal operational relation the safety of whole network system.Ball valve as transformer body fuel outlet valve, be subject to the impact of the factors such as working life, running environment and external temperature, the rubber circle being placed on inside and outside shell flange facing is an easily damaged parts, and therefore, it is repaired and changes is the work that power department need to often be faced.Need to be not having a power failure owing to repair changing, carry out under transformer normal operating condition, thereby seem abnormal trouble.At present, usual way is to rely on a kind of special tool, and the spherical valve core of fuel outlet valve is slightly inwardly pushed up, make the primary sealing area in this spool outside become time sealing surface, at inner casing sealing surface, transfer to after primary sealing area, can unload lower casing, damaged the replacing of rubber circle.But, there is following problems in this special tool: because the pagoda of bowls of pushing tow spool is vertically fixed on a top board when practical application, pagoda of bowls completes and relies on the straight line motion of top board to guarantee the axial jacking force of spool sphere, otherwise, will cause departing from of axial jacking force, and occur the phenomenon that the askew spool in top causes transformer oil to leak.And in fact, with this special tool, will guarantee that departing from does not appear in axial jacking force is to be difficult to realize, because operator advance top board to travel forward, by two nuts of turn, realize, and these two nuts are located on respectively on two screw rods, these two screw rod symmetries are set in the both sides of top board, therefore, can only be precession separately during operation, even if two nuts of two operator's turns simultaneously, also can not guarantee synchronous precession.
Summary of the invention
For solving the problems of the technologies described above, the present invention aims to provide a kind of transformer body fuel outlet valve rubber circle and changes special tool, by this instrument, not only can change easily rubber circle, and, there will not be transformer oil leakage phenomenon.
For achieving the above object, the present invention has adopted following technological scheme, this transformer body fuel outlet valve rubber circle is changed the structure of special tool, comprise a top board and a pagoda of bowls with bowl handle, and two screw rods that are placed in described top board both sides, the shaft afterbody of these two screw rods is rotary with respectively a nut, it is characterized in that: described top board middle part is fixed with a sleeve pipe perpendicular with it, the bowl handle of described pagoda of bowls stretches in the pipe of this sleeve pipe, the push rod head of the free-end end face of this bowl of handle and a push rod screwing in from the described sleeve pipe the other end offsets, the free-end of this push rod is exposed outside described sleeve pipe as handle connecting end.
As preferably, the push rod head of described push rod is taper, the tapered concave surface of free-end end face of described bowl handle, and the ring wall of this taper concave surface do not touch mutually with described taper, and the diapire of the end face of described taper and described taper concave surface offsets.
As preferably, the circumferential ring wall of the rim of a bowl of described pagoda of bowls forms an anchor ring of receiving sphere.
As preferably, the rim of a bowl of described pagoda of bowls is provided with soft material circle.
Beneficial effect: than existing, the present invention sets up after sleeve pipe and push rod structure, the bowl handle of pagoda of bowls is stretched in sleeve pipe and offset with push rod, and both only offsets with a way of contact.During operation, sleeve pipe has guiding and anastomosis concurrently, and relies on a push rod pushing tow pagoda of bowls reach, pagoda of bowls and top board split in addition, relatively reduced because of the impact of two asynchronous precessions of screw rod on the axial jacking force of pagoda of bowls, and can not push up askew spool, do not caused transformer oil to leak.
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structure for amplifying schematic perspective view of pagoda of bowls in Fig. 1.
Fig. 3 is the use state description figure of special tool shown in Fig. 1.
In figure: top board 1, sleeve pipe 2, pagoda of bowls 3, bowl handle 31, the rim of a bowl 32, bowl chamber 33, the first screw rods 4, screw head 41, the second screw rods 5, nut 51, push rod 6, push rod head 61, handle connecting end 62, gap 7, inner casing flange 71, shell flange 72, fastening nut 73, bolt 731.
Embodiment
Referring to Fig. 1, Fig. 2.This special tool, comprises top board 1 and a pagoda of bowls 3 with bowl handle 31, and symmetrical placement is at two screw rods of top board 1 both sides, i.e. the first screw rod 4 and the second screw rod 5.Top board 1 is a rectangular metal plate, and bowl handle 31 is a metal solid cylinder.The shaft front end of two screw rods is to be equipped with screw thread on screw head 41, and their afterbody is rotary with respectively a nut 51, and precession nut 51 can make top board 1 reach.The middle part of pagoda of bowls 1 is fixed with a sleeve pipe perpendicular with it 2, and the length of sleeve pipe 2 should be suitable with two screw rods.The bowl handle 31 of pagoda of bowls 3 stretches into from the front end of sleeve pipe 2, and the free-end end face of this bowl of handle 31 offsets with the push rod head 61 of the push rod 6 screwing in from sleeve pipe 2 rear ends, and the free-end of this push rod 6 is that rear end is exposed outside the port of the rear end of sleeve pipe 2 as handle connecting end 62.
As preferably in the specific implementation, the push rod head 61 of push rod 6 is preferably taper, matches therewith, the tapered concave surface of free-end end face of bowl handle 31, but the ring wall of taper concave surface should not touched with the taper of push rod head 61 mutually, both only offset with the end face of taper and the diapire of taper concave surface.Because relatively both this scheme offset with plane, can eliminate because of frictional force excessive, may make pagoda of bowls 3 produce the phenomenon of precession, injure the spherical valve core of fuel outlet valve, and may make the straight line motion of pagoda of bowls 3 be affected, make axial jacking force occur skew, and push up askew spool, cause leakage.
The circumferential ring wall of the rim of a bowl of pagoda of bowls 3 forms an anchor ring of receiving sphere, and this kiss junction that is conducive to pagoda of bowls 3 and spool is in stable mated condition.Soft material circle on pagoda of bowls 3 the rims of a bowl, as rubber ring is conducive to protect spool face.
Referring to Fig. 3, and in conjunction with other view.During operation, first unload two of fuel outlet valve inner casing flange 71 and shell flange 72 to corner bolt 731 and fastening nut 73.Because the fixed hole of inner casing flange 71 has internal thread, and shell flange 72 through hole without internal thread just, therefore, be located on the fixed hole of inner casing flange 71 after respectively the screw head of two screw rods 41 being extended through to the through hole of shell flange 72; Follow integral body of the interior formation of sleeve pipe 2 on the bowl handle 31 insertion top boards 1 in pagoda of bowls 3 and this integral body is fixed on fuel outlet valve, now the first screw rod 4 and the second screw rod 5 touch spool face center through the soft material circle on two symmetrical holes on top board and pagoda of bowls mouth 32, tighten inward again two nuts 51 until touching top board 1 has now just been fixed top board 1 to the distance between inner casing flange 71; Finally by operating grip turn push rod 6, pushing tow pagoda of bowls 3 makes spherical valve core do to move in a little slightly, makes the inferior sealing surface of spool inner side become primary sealing area, thereby meets the condition that fuel outlet valve shell flange 72 is changed aging damaged rubber circle that shifts out.Meet replacing condition and unload again all fastening nuts 73 and bolt 731 thereof later, shell flange 72 is retreated to the first screw rod 4 and the second screw rod 5 to the right near the position of top board 1, separated with inner casing flange 71, now, can change easily the plantation rubber that is positioned at gap 7.Change completely, first shell flange 72 is resetted and is fastened on inner casing flange 71, then, shed special tool, spool resets under oil pressure effect, is loaded on two to corner bolt 731 and fastening nut 73, completes replacing operation.
The present embodiment is only explanation technology contents of the present invention, and any simple deformation design of making according to the present embodiment, all should include protection scope of the present invention in.

Claims (4)

1. a transformer body fuel outlet valve rubber circle is changed special tool, comprise a top board (1) and a pagoda of bowls with bowl handle (31) (3), and two screw rods that are placed in described top board (1) both sides, the shaft afterbody of these two screw rods is rotary with respectively a nut (51), it is characterized in that: described top board (1) middle part is fixed with a sleeve pipe perpendicular with it (2), the bowl handle (31) of described pagoda of bowls (3) stretches in the pipe of this sleeve pipe (2), the push rod head (61) of the free-end end face of this bowl of handle (31) and a push rod (6) screwing in from described sleeve pipe (2) the other end offsets, the free-end of this push rod (6) is exposed outside described sleeve pipe (2) as handle connecting end (62).
2. special tool as claimed in claim 1, it is characterized in that: the push rod head (61) of described push rod (6) is taper, the tapered concave surface of free-end end face of described bowl handle (31), and the ring wall of this taper concave surface is not touched mutually with described taper, the diapire of the end face of described taper and described taper concave surface offsets.
3. special tool as claimed in claim 1, is characterized in that: the circumferential ring wall of the rim of a bowl of described pagoda of bowls (3) forms an anchor ring of receiving sphere.
4. special tool as claimed in claim 1, is characterized in that: the rim of a bowl of described pagoda of bowls (3) is provided with soft material circle.
CN201310501713.1A 2013-10-23 2013-10-23 Transformer body fuel outlet valve rubber circle changes special tool Active CN103542171B (en)

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Application Number Priority Date Filing Date Title
CN201310501713.1A CN103542171B (en) 2013-10-23 2013-10-23 Transformer body fuel outlet valve rubber circle changes special tool

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CN201310501713.1A CN103542171B (en) 2013-10-23 2013-10-23 Transformer body fuel outlet valve rubber circle changes special tool

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CN103542171B CN103542171B (en) 2015-11-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323044A (en) * 2018-12-08 2019-02-12 大连福佳·大化石油化工有限公司 Transformer vacuum pipeline butterfly valve seepage treatment tooling
CN110281203A (en) * 2019-06-19 2019-09-27 中铁工程装备集团有限公司 A kind of normal pressure changes alloy cutter sealing device maintenance replacement tooling and application method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228181A (en) * 1991-08-26 1993-07-20 Ingle Michael D Flange aligning device
CN202108999U (en) * 2011-05-09 2012-01-11 叶仁富 Transformer anti-theft oil drain valve and special tool
CN203098213U (en) * 2012-12-18 2013-07-31 中国石油天然气股份有限公司 Compressor suction and exhaust valve dismounting tool
CN103341843A (en) * 2013-06-26 2013-10-09 宝钢不锈钢有限公司 Dismounting tool and dismounting method of large plunger sleeve valve
CN203628015U (en) * 2013-10-23 2014-06-04 国家电网公司 Replacement tool special for rubber rings of transformer body oil drain valves

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5228181A (en) * 1991-08-26 1993-07-20 Ingle Michael D Flange aligning device
CN202108999U (en) * 2011-05-09 2012-01-11 叶仁富 Transformer anti-theft oil drain valve and special tool
CN203098213U (en) * 2012-12-18 2013-07-31 中国石油天然气股份有限公司 Compressor suction and exhaust valve dismounting tool
CN103341843A (en) * 2013-06-26 2013-10-09 宝钢不锈钢有限公司 Dismounting tool and dismounting method of large plunger sleeve valve
CN203628015U (en) * 2013-10-23 2014-06-04 国家电网公司 Replacement tool special for rubber rings of transformer body oil drain valves

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109323044A (en) * 2018-12-08 2019-02-12 大连福佳·大化石油化工有限公司 Transformer vacuum pipeline butterfly valve seepage treatment tooling
CN110281203A (en) * 2019-06-19 2019-09-27 中铁工程装备集团有限公司 A kind of normal pressure changes alloy cutter sealing device maintenance replacement tooling and application method
CN110281203B (en) * 2019-06-19 2023-11-14 中铁工程装备集团有限公司 Maintenance and replacement tool for normal-pressure alloy-replacement tool sealing device and use method

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