CN105234859A - Back-up wrench for flange demounting and mounting - Google Patents
Back-up wrench for flange demounting and mounting Download PDFInfo
- Publication number
- CN105234859A CN105234859A CN201510687912.5A CN201510687912A CN105234859A CN 105234859 A CN105234859 A CN 105234859A CN 201510687912 A CN201510687912 A CN 201510687912A CN 105234859 A CN105234859 A CN 105234859A
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- CN
- China
- Prior art keywords
- flange
- wrench
- lower body
- upper body
- tong
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a back-up wrench for flange demounting and mounting. The back-up wrench is used for connecting and demounting of a flange plate, is especially suitable for connecting and fastening of pipelines with flange plates and is convenient to operate. The back-up wrench comprises an upper body and a lower body. The upper body and the lower body are two involutive semicircles. The inner diameter obtainer after involution conforms to the outer diameter of the pipe end of a connected flange plate. Nut holes are formed in the semicircles and correspond to bolts holes in the connected flange plate. The back-up wrench is easy to manufacture, the type and size of the back-up wrench can be set according to the standard series of a flange, and the back-up wrench can be widely popularized in various fields, especially petroleum enterprises, chemical enterprises and the like with multiple flange connecting pipelines; the flange demounting and mounting construction time can be greatly shortened, and labor efficiency is improved; and meanwhile the effects of standard mounting, orderliness and attractiveness can be achieved. In the oil testing and gas testing production field, the construction period can be greatly shortened, the gas testing preparation time is shortened, the labor intensity of workers is lowered, and good application prospects are achieved.
Description
Technical field
The present invention relates to the dismantling device of ring flange, particularly flange dismounting back-up tong, for connection and the dismounting of ring flange, the connection being particularly useful for flanged coil pipe line is fastening, the present invention is used as back-up tong, easy to operate.
Background technology
Flange, as a kind of attaching parts, is widely used in the production scene of various work, ore deposit enterprise.Particularly apply more in the feed-line of oil, chemical enterprise, formation testing, gas testing pipeline.The pipeline of usual use Flange joint is one end welding flange at pipe, uses bolt to connect by after the docking of the ring flange of two tubes.In the work that the connection of gas well pilot scale air-flow journey is workload burdensome in gas testing construction, account for 2/3rds of gas testing preparation amount.The high-pressure process pipeline that this employing ring flange connects, usual each ring flange needs 8 bolts to fix.High pressure line is comparatively heavy, in construction first by flow process pipeline lay, furnish, during connection be use little pipe wrench fix the bolt one end being connected to nut, be called beat back-up tong, clamp the nut of the fixing bolt other end again with spanner or tubule, make two ring flanges fastening.Several bolts of ring flange ground proximity are difficult to beat back-up tong, and pipeline flow process Flange joint accounts for that the number of days of total body construction is many, use duration, causes overall efficiency of construction lower.And present oil development is all generally well group formula also claims platform, a general platform has San Koujing at least, a bite well about has hundreds of bar flange bolt to connect, the overall bolt quantity of a platform can reach thousands of, the workload that flange bolt connects is very big, and space is little, the generation having slippage time in connection procedure, squeeze hand, accidentally injure event, above-mentioned present situation needs improvement badly.
In addition, in the installation of Operating Pressure equipment, unloading process, also there are the problems referred to above: it is also connected by flange bolt that the lubricator, diameter changing nipple etc. of Operating Pressure equipment are installed, and the connecting bolt of each ring flange reaches 16, and need high-altitude cradling to connect.Can only hang Sheng 2 people in hanging basket, beat back-up tong for one, one fastening, in fastener cycle, also needs two people to coordinate.Beat the people of back-up tong, grab back-up tong on the other hand, a Hand supplementary catches fastening pipe wrench or spanner, and another person is pounded tightly with hammer.In the hanging basket of high-altitude, using this operating type, its frequent slippage of instrument used, to drop from hanging basket, potential danger is very big, and efficiency of construction is lower.
Above two kinds of operating modes, describe the pipeline of current all flanged connections, all exist and beat the problem that back-up tong is more difficult, connecting bolt efficiency is lower, there is potential safety hazard.
Summary of the invention
The object of this invention is to provide flange dismounting back-up tong, solve the operating difficulties existed in flange installation, dismounting, for Flange joint provides use instrument effectively reliably, raising efficiency of construction.
For solving the problem, technical solution of the present invention is: flange dismounting back-up tong comprises body and lower body, upper body and lower body are two involutory semicircular body, internal diameter after involutory conforms to the pipe end external diameter of the ring flange be connected, semicircular body is provided with nut bore, and this nut bore is corresponding with the bolt hole on the ring flange be connected.
The quantity of described nut bore conforms to the number of bolt hole be connected on ring flange.
Remarkable result of the present invention is: due to all flange Dou Shi states dimensioning, therefore, the present invention can according to the size of site operation flange used, be made into the back-up tong of different size model, as the back-up tong of the various models such as 6 nut bore, 8 holes, 12 holes, 16 holes, which reduces time and trouble that every bolts all will beat back-up tong, save the engineering time.Back-up tong of the present invention due to once can whole nuts of clamp flange side, can diagonal angle fastening fast, efficiency of construction is high, and speed of application is fast.The present invention manufactures simply, its model, size can according to the specification series manufactures of flange, extensively can be generalized to every field, especially the enterprise such as oil, chemical industry of more Flange joint pipeline is used, can greatly save the flange demolition, installation engineering time, raise labour efficiency, the standard that simultaneously can reach is installed, the effect of neat appearance.Not only greatly can shorten construction period in formation testing gas testing production scene, reduce gas testing time, reduce labor strength, can also production safety be ensured, there is good application prospect and significant economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of geometrical clamp in the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples in detail the present invention is described in detail, not limits the scope of the invention.As depicted in figs. 1 and 2:
embodiment one
Flange dismounting back-up tong comprises body 1 and lower body 2, upper body 1 and lower body 2 are two involutory semicircular body, internal diameter after involutory conforms to the pipe end external diameter of the ring flange be connected, and semicircular body is provided with nut bore 3, and this nut bore 3 is corresponding with the bolt hole on the ring flange be connected.The quantity of nut bore 3 conforms to the number of bolt hole be connected on ring flange.This back-up tong after involutory just in time mates with the ring flange will beating back-up tong, and the centre bore on back-up tong just in time coincide with the flange center hole beating back-up tong.Upper body 1 and lower body 2 are placed on the outside needing one of them ring flange be connected, in advance wanting fastening nuts to be placed in the nut bore 3 on upper body 1 and lower body 2 successively, connecting bolt is penetrated in the bolt hole of another ring flange and is connected with the nuts nut bore 3, adjust the correct position after bolt connection, the nuts of fastening bolt opposite side, nuts in nut bore 3 can not rotate, and makes two ring flanges fastening, easy to operate.The card of body 1 and lower body 2 can be knocked after fixing, take off body 1 and lower body 2.
embodiment two
Described upper body 1 and lower body 2 involutory after external diameter be greater than the external diameter being connected ring flange disk body, also can knock the side of body 1 and lower body 2, the present invention is more easily deviate from from nuts.
embodiment three
Described upper body 1 and lower body 2 are provided with outer apical pore 8, and this outer apical pore 8 at least respectively arranges one in upper body 1 and lower body 2, is provided with internal thread in eyelet.If run into the situation that body 1 or lower body 2 tension cannot take off, a bolt or threaded screw rod can be used to load in outer apical pore 8, because offside is that ring flange can work as blind plugging, rotate this bolt with spanner or upper body 1 or lower body 2 just can eject by screw rod from nuts.
embodiment four
Described upper body 1 and lower body 2 are also equipped with geometrical clamp 4, and this geometrical clamp 4 at least respectively arranges one on upper body 1 and lower body 2.Geometrical clamp 4 is U-shaped folders, comprises strap 6 and ambulatory splint 7, and ambulatory splint 7 is that L-type plate is connected by adjustment screw 5 with strap 6.The thickness of the width of the U-shaped mouth of geometrical clamp 4 and upper body 1 or lower body 2 and the thickness sum being connected ring flange conform to.
The present embodiment uses in the pipeline connected upper and lower with ring flange, upper body 1 and lower body 2 penetrate at bolt in the process of nut and easily drop, for convenience of operational design geometrical clamp 4.If do not use geometrical clamp 4, operator also can fix upper body 1 or lower body 2 with a hand, and another hand loads bolt in the nut of nut bore 3.
Claims (7)
1. flange dismounting back-up tong, it is characterized in that, comprise body and lower body, upper body and lower body are two involutory semicircular body, internal diameter after involutory conforms to the pipe end external diameter of the ring flange be connected, semicircular body is provided with nut bore, and this nut bore is corresponding with the bolt hole on the ring flange be connected.
2. flange dismounting back-up tong according to claim 1, is characterized in that, the quantity of described nut bore conforms to the number of bolt hole be connected on ring flange.
3. flange dismounting back-up tong according to claim 1, is characterized in that, described upper body and lower body involutory after external diameter be greater than the external diameter being connected ring flange disk body.
4. the flange dismounting back-up tong according to claim 1 or 3, is characterized in that, described upper body and lower body are provided with outer apical pore, and this outer apical pore at least respectively arranges one in upper body and lower body, is provided with internal thread in eyelet.
5. the flange dismounting back-up tong according to claim 1 or 3, is characterized in that, described upper body and lower body are also equipped with geometrical clamp, and this geometrical clamp at least respectively arranges one on upper body and lower body.
6. flange dismounting back-up tong according to claim 5, it is characterized in that, described geometrical clamp is U-shaped folder, comprises strap and ambulatory splint, and ambulatory splint is that L-type plate is connected by adjustment screw with strap.
7. flange dismounting back-up tong according to claim 6, is characterized in that, the thickness of the width of the U-shaped mouth of described geometrical clamp and upper body or lower body and the thickness sum being connected ring flange conform to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510687912.5A CN105234859A (en) | 2015-10-23 | 2015-10-23 | Back-up wrench for flange demounting and mounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510687912.5A CN105234859A (en) | 2015-10-23 | 2015-10-23 | Back-up wrench for flange demounting and mounting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105234859A true CN105234859A (en) | 2016-01-13 |
Family
ID=55032808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510687912.5A Pending CN105234859A (en) | 2015-10-23 | 2015-10-23 | Back-up wrench for flange demounting and mounting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105234859A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107900664A (en) * | 2017-11-29 | 2018-04-13 | 西南石油大学 | One kind is got rusty bolt more changing device online |
| CN110406095A (en) * | 2019-08-30 | 2019-11-05 | 成都蒂森克虏伯富奥弹簧有限公司 | Automobile stabilizer bar gum cover vulcanizes assembling jig and gum cover assembles vulcanization process |
| CN111451988A (en) * | 2019-01-21 | 2020-07-28 | 中国石油天然气股份有限公司 | Back tongs for disassembling and assembling flange, disassembling and assembling device and disassembling and assembling method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201493086U (en) * | 2009-09-04 | 2010-06-02 | 国营万峰无线电厂 | Bulking machine with screw sleeve capable of being rapidly detached |
| CN201645419U (en) * | 2010-03-12 | 2010-11-24 | 安徽昊源化工集团有限公司 | Flange dismounting and installing tool for large-diameter high-pressure pipeline |
| CN101974918A (en) * | 2010-10-15 | 2011-02-16 | 三一重机有限公司 | Self-lubricating bearing for boom of excavator |
| CN202212608U (en) * | 2011-07-19 | 2012-05-09 | 天津重钢机械装备股份有限公司 | Boring device on end face of large-scale workpiece by means of drilling machine |
| US20130067709A1 (en) * | 2011-09-21 | 2013-03-21 | Quinn Bender | Pipe Aligning Tool |
| CN203009601U (en) * | 2012-12-19 | 2013-06-19 | 杭州亚瀚机械有限公司 | Bearing seat |
| CN204525363U (en) * | 2015-04-15 | 2015-08-05 | 永城煤电控股集团有限公司 | Quick dismounting bolt jig |
-
2015
- 2015-10-23 CN CN201510687912.5A patent/CN105234859A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201493086U (en) * | 2009-09-04 | 2010-06-02 | 国营万峰无线电厂 | Bulking machine with screw sleeve capable of being rapidly detached |
| CN201645419U (en) * | 2010-03-12 | 2010-11-24 | 安徽昊源化工集团有限公司 | Flange dismounting and installing tool for large-diameter high-pressure pipeline |
| CN101974918A (en) * | 2010-10-15 | 2011-02-16 | 三一重机有限公司 | Self-lubricating bearing for boom of excavator |
| CN202212608U (en) * | 2011-07-19 | 2012-05-09 | 天津重钢机械装备股份有限公司 | Boring device on end face of large-scale workpiece by means of drilling machine |
| US20130067709A1 (en) * | 2011-09-21 | 2013-03-21 | Quinn Bender | Pipe Aligning Tool |
| CN203009601U (en) * | 2012-12-19 | 2013-06-19 | 杭州亚瀚机械有限公司 | Bearing seat |
| CN204525363U (en) * | 2015-04-15 | 2015-08-05 | 永城煤电控股集团有限公司 | Quick dismounting bolt jig |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107900664A (en) * | 2017-11-29 | 2018-04-13 | 西南石油大学 | One kind is got rusty bolt more changing device online |
| CN111451988A (en) * | 2019-01-21 | 2020-07-28 | 中国石油天然气股份有限公司 | Back tongs for disassembling and assembling flange, disassembling and assembling device and disassembling and assembling method |
| CN110406095A (en) * | 2019-08-30 | 2019-11-05 | 成都蒂森克虏伯富奥弹簧有限公司 | Automobile stabilizer bar gum cover vulcanizes assembling jig and gum cover assembles vulcanization process |
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Application publication date: 20160113 |