CN114704700B - Glass steel pipeline flange mouth connection structure - Google Patents

Glass steel pipeline flange mouth connection structure Download PDF

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Publication number
CN114704700B
CN114704700B CN202210098488.0A CN202210098488A CN114704700B CN 114704700 B CN114704700 B CN 114704700B CN 202210098488 A CN202210098488 A CN 202210098488A CN 114704700 B CN114704700 B CN 114704700B
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China
Prior art keywords
nut
connection structure
flange
cover body
flange port
Prior art date
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CN202210098488.0A
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Chinese (zh)
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CN114704700A (en
Inventor
刘彦章
范云鹰
解立龙
向小雄
周尚卫
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Kunming Zhongtianda Frp Development And Research Co ltd
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Kunming Zhongtianda Frp Development And Research Co ltd
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Priority to CN202210098488.0A priority Critical patent/CN114704700B/en
Publication of CN114704700A publication Critical patent/CN114704700A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L45/00Pipe units with cleaning aperture and closure therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/02Flanged joints the flanges being connected by members tensioned axially
    • F16L23/036Flanged joints the flanges being connected by members tensioned axially characterised by the tensioning members, e.g. specially adapted bolts or C-clamps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00Flanged joints
    • F16L23/16Flanged joints characterised by the sealing means
    • F16L23/18Flanged joints characterised by the sealing means the sealing means being rings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

The invention relates to the technical field of pipeline connecting equipment, in particular to a glass fiber reinforced plastic pipeline flange port connecting structure, wherein a flange port is arranged on a pipeline, the flange port is connected with a cover body through a locking bolt, a dustproof cover is sleeved on the periphery of the flange port, a nut loosening and tightening mechanism is arranged in the dustproof cover and comprises a buckling head, a loosening and tightening motor, a telescopic cylinder and an adjusting motor, a rotating disc is slidably arranged on a rotating shaft of the adjusting motor, the telescopic end of the telescopic cylinder is rotatably connected onto the rotating disc, a loosening and tightening motor is connected onto a supporting arm of the rotating disc, the loosening and tightening motor is connected with a buckling head, and the buckling head can be buckled and connected with a nut of the locking bolt. The invention can replace manual inspection of the connection condition of the flange port; the nut is sequentially loosened and tightened, the smoothness of connection is guaranteed, the later labor and time saving and smooth detachment of the locking screw are guaranteed, manual operation is not needed, the construction difficulty is reduced, the detachment is quick and safe, and the detachment and installation efficiency is greatly improved.

Description

Glass steel pipeline flange mouth connection structure
Technical Field
The invention relates to the technical field of pipeline connecting equipment, in particular to a glass fiber reinforced plastic pipeline flange port connecting structure.
Background
Industrial waste gas refers to the generic term for various pollutant-containing gases discharged into the air during the fuel combustion and production processes in the factory of the enterprise. These exhaust gases are: carbon dioxide, carbon disulphide, hydrogen sulphide, fluorides, nitrogen oxides, chlorine, hydrogen chloride, carbon monoxide, sulphuric acid (mist) lead mercury, beryllium compounds, smoke dust and production dust are discharged into the atmosphere, and air is polluted.
The tail gas of industry emission can corrode industrial pipeline, leads to needing periodic maintenance and replacement, and in order to be convenient for connect or the condition such as maintenance, can be provided with various flange interfaces (or call manhole, access hole etc.) on the pipeline, then get off it when not using, when later stage overhauls, then open the manhole cover can. The existing tail gas treatment equipment starts to use glass fiber reinforced plastic pipelines. The glass fiber reinforced plastic pipeline is a light, high-strength and corrosion-resistant nonmetallic pipeline, and has the advantages of long service life, low comprehensive cost, quick installation, safety, reliability and the like compared with the common steel pipe. Among various industrial pipelines, there are various flange interfaces, and most of them are connected by bolting.
However, the following problems are that the industrial production maintenance period is long, the maintenance period is basically more than half a year, the flange is exposed outside for a long time, and the flange is exposed to the environment such as wind, rain and the like, so that the connecting bolt is easy to rust, dust accumulation, the threaded section is deformed, rusted and air leakage during the later maintenance, the threaded section cannot be released and fixed by rotating the nut, the threaded section can only be forcibly knocked, and even the bolts are taken out by adopting the modes such as sawing, air welding and the like, so that the disassembly and the assembly are difficult, and the time is wasted. And secondly, as most of the pipelines are circulated gas and some of the pipelines are dangerous gas such as coal gas, the dismounting bolts cannot be knocked, electric welding and other modes which are easy to ignite at the moment, so that the dismounting method of the bolts is further limited, the construction difficulty is increased, the pipelines are dismounted to form dangerous operation, and the replacement period is greatly prolonged. And for those devices which are only stopped for a plurality of hours, the replacement operation cannot be directly carried out, so that the normal use of the devices is affected.
Disclosure of Invention
Aiming at the technical problems, the invention provides a glass fiber reinforced plastic pipeline flange port connecting structure.
The technical scheme provided by the invention is as follows:
the utility model provides a glass steel pipeline flange mouth connection structure, includes the pipeline, is provided with the flange mouth on the pipeline, flange mouth and lid pass through lock bolt connection, the peripheral cover of flange mouth is equipped with the shield, the shield is divided into two cavitys through the intermediate baffle, and the intermediate baffle is connected with the lid, and the shield is inside to be provided with nut elasticity mechanism, nut elasticity mechanism includes buckle, elasticity motor, telescopic cylinder and accommodate motor, slidable is provided with the carousel in accommodate motor's the pivot, telescopic cylinder's telescopic end rotatable coupling is on the carousel, be connected with elasticity motor on the support arm of carousel, elasticity motor and buckle connection, the buckle can be connected with lock bolt's nut lock.
Preferably, sealing rings are respectively arranged on two sides of the locking bolt in a penetrating way, and the sealing rings are respectively clung to the cover body and the flange opening.
Preferably, the side wall of the pipeline is provided with an installation seat, and the cover body is arranged on the installation seat.
Preferably, a sealing gasket is connected between the cover body and the flange opening, and the locking bolt penetrates through the sealing gasket.
Preferably, the opening circumference of the cover body is provided with a turnover annular rubber piece, and the annular rubber piece can be tightly attached to the side edge of the flange opening after being turned over.
Preferably, the rotating shaft is connected with the bearing on the inner side of the partition plate through a bearing seat, the rotary table is slidably clamped on the rotating shaft, an annular groove is formed in one side of the rotary table, the bearing is arranged on the annular groove, and the telescopic shaft of the telescopic cylinder is connected with the inner wall of the bearing.
Preferably, the upper end of the support arm is extended with a sliding head, the inner wall of the dust cover is provided with an annular boss, and the sliding head is arranged on the annular boss in a sliding way.
Preferably, an annular rotating space is formed between the middle partition plate and the cover body, and the buckling head extends into the other side of the middle partition plate from the rotating space and is in butt joint with the nut.
Preferably, a plurality of through holes are formed in the middle partition plate, and the locking screws penetrate through the through holes and are screwed into the threaded holes of the cover body.
The invention has the following advantages and beneficial effects:
1. in the invention, a dustproof cover is sleeved on the periphery of a flange opening, the dustproof cover is divided into two cavities by a middle partition plate, the middle partition plate is connected with a cover body, and a nut loosening and tightening mechanism is arranged in the dustproof cover. When the device is normally used, the adjusting motor is periodically started to rotate to drive the buckling head to be in butt joint with the corresponding nut, then the telescopic cylinder is started to enable the buckling head to be buckled on the nut, and finally the motor is started to rotate positively and negatively to tighten the nut (namely, the nut is loosened and tightened; after the nut of one locking bolt is loosened, the nut of the other locking bolt is loosened by rotating the other end on the diagonal line, and the nut is loosened by the reciprocating mode, so that the nut is loosened. The nut can be periodically loosened and tightened by the operation, firstly, all the locking bolts can be ensured to be in a screwed state, and the connection condition of the flange opening can be periodically checked instead of manual work; secondly, the nuts are periodically and sequentially loosened, so that the connection strength of the flange opening is not affected, the nuts can also be enabled to periodically rotate on the screw rod section of the locking bolt, the smoothness of connection is guaranteed, the nuts and the screw rod section can be guaranteed to be relatively operated through the knob after a long time, and therefore the later labor and time saving locking screw dismantling can be guaranteed.
2. In the invention, when the locking screw is dismounted in the later stage, the tightness motor is only required to be controlled to rotate in one direction, the nuts are loosened, and when all the nuts are loosened, the dust cover is directly taken off, and as the dust cover is connected with the cover body, the cover body is taken off. By means of the design, the cover body can be automatically removed without manual operation, in the removal process, the bolts and the nuts can be smoothly rotated to be removed, the violent removal of modes such as welding, cutting and beating is not needed, the construction difficulty is reduced, the removal is rapid and safe, and the disassembly and assembly efficiency is greatly improved. Particularly, for equipment which is only stopped for a plurality of hours and the disassembly and assembly of pipelines such as gas and the like, the equipment can be directly and quickly disassembled and assembled without fire operation, and the normal production and the safety problem of workers of the equipment are ensured without manual operation.
3. According to the invention, the flange opening and the cover body are all wrapped on the inner side through the dustproof cover, so that dust cannot enter the inner part, and the locking bolt is ensured to be clean, dust-free and rust-free; further, after the equipment runs for a long time, the phenomenon of air leakage is avoided at the flange opening, if the air leakage is avoided, the air flow is full of the inside of the dust cover and overflows from the side edge of the flange opening, and dust can be effectively prevented from penetrating into the inside.
Drawings
FIG. 1 is a front view of a connection structure provided by the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is an enlarged view b of a portion of FIG. 2;
fig. 4 is a partial enlarged view c of fig. 2;
FIG. 5 is a schematic illustration of the attachment of the cover to the locking bolt;
icon: 1-pipeline, 11-flange mouth, 12-mount pad, 2-lid, 21-locking bolt, 211-nut, 211 a-first nut, 211 b-second nut, 211 c-third nut, 211 d-fourth nut, 211 e-fifth nut, 211 f-sixth nut, 212-sealing ring, 22-sealing gasket, 3-dust cover, 31-annular boss, 32-supporting block, 33-bearing seat, 34-middle baffle, 341-rotating space, 342-through hole, 343-locking screw, 344-sleeve, 35-annular rubber piece, 4-adjusting motor, 41-rotating shaft, 42-turntable, 421-annular groove, 43-support arm, 5-telescopic cylinder, 51-bearing, 6-elastic motor, 61-buckle.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
As shown in fig. 1 to 5, a glass fiber reinforced plastic pipeline flange port connection structure comprises a pipeline 1, wherein a flange port 11 is arranged on the pipeline 1, and the flange port 11 is connected with a cover body 2 through a plurality of locking bolts 21.
A dust cover 3 is sleeved on the periphery of the flange opening 11, and the dust cover 3 can cover the flange opening 11 and the cover body 2. A mounting seat 12 is arranged on the side wall of the pipeline 1, and the cover body 2 is arranged on the mounting seat 12. The dustproof cover 3 is divided into two cavities through the middle partition plate 34, the middle partition plate 34 is fixedly connected with the cover body 2, and a nut loosening and tightening mechanism is arranged inside the dustproof cover 3.
The nut tightening mechanism comprises a buckle head 61, a tightening motor 6, a telescopic cylinder 5 and an adjusting motor 4, wherein a rotating disc 42 is slidably arranged on a rotating shaft 41 of the adjusting motor 4, namely, the rotating disc 42 can only slide on the rotating shaft 41 along the axial direction of the rotating shaft 41, and when the rotating shaft 41 rotates, the rotating disc 42 is synchronously driven to rotate. The telescopic end of the telescopic cylinder 5 is rotatably connected to the turntable 42, that is, when the turntable 42 rotates, the telescopic end of the telescopic cylinder 5 rotates relatively to the telescopic end of the telescopic cylinder 5, and the telescopic end of the telescopic cylinder 5 is fixed. The support arm 43 of the turntable 42 is connected with the loosening motor 6, the loosening motor 6 is connected with the buckle head 61, the buckle head 61 can be buckled and connected with the nut 211 of the locking bolt 21, and after the buckle head 61 is buckled on the nut 211, the loosening and tightening operation of the nut 211 can be realized by forward and reverse rotation of the loosening motor 6.
Principle of operation: as shown in fig. 5, it is assumed that the flange port 11 and the cover 2 are connected by 6 lock bolts 21. When the device is normally used, the control system controls the adjusting motor 4 to periodically start and rotate to drive the buckling head 61 to be in butt joint with the first nut 211a, then the telescopic cylinder 5 is started to enable the buckling head 61 to be buckled on the first nut 211a, and finally the loosening motor 6 starts to rotate positively and negatively to loosen (i.e. loosen the nut first and then tighten the nut) the first nut 211 a. After the first nut 211a of one locking bolt 21 is loosened, the other end on the diagonal line is rotated to loosen the second nut 211b of the other locking bolt 21; after the second nut 211b is completely tightened, the third nut 211c adjacent to the second nut 211b is tightened, and after the third nut 211c is completely tightened, the fourth nut 211d on the diagonal line of the third nut 211c is tightened; after the fourth nut 211d is tightened, the fifth nut 211e adjacent to the fourth nut 211d is tightened, and after the fifth nut 211e is tightened, the sixth nut 211f on the diagonal line of the fifth nut 211e is tightened. When the number of the lock bolts 21 is not limited at this time, the same is done in a reciprocating manner, and all nuts are tightened.
The nut 211 can be periodically loosened and tightened, and firstly, all the locking bolts 21 can be ensured to be in a screwed state, so that the connection condition of the flange opening 11 can be periodically checked instead of manually; secondly, the nuts 211 are periodically and sequentially loosened, so that the connection strength of the flange port 11 is not affected, the nuts 211 can also be periodically rotated on the screw section of the locking bolt 21, the smoothness of connection is ensured, the nuts 211 and the screw section can be relatively rotated after a long time, and therefore the later labor and time saving removal of the locking screw 343 can be ensured.
Further, when the equipment is stopped and overhauled, and the like, the locking bolt 21 is dismounted in the later stage, the elastic motor 6 is only required to be controlled to rotate in one direction, the nuts 211 are loosened, and after all the nuts 211 are loosened, the dust cover 3 is directly taken off, and as the dust cover 3 is connected with the cover body 2, the cover body 2 is also taken off after the dust cover 3 is taken off. By means of the design, the cover body 2 can be automatically removed without manual operation, in addition, the locking bolt 21 and the nut 211 can be smoothly rotated to be removed in the removing process, the violent removal of modes such as welding, cutting and beating is not needed, the construction difficulty is reduced, the disassembly is rapid and safe, and the disassembly and assembly efficiency is greatly improved. Particularly, for equipment which is only stopped for a plurality of hours and the disassembly and assembly of the pipelines 1 such as gas and the like, the quick disassembly and assembly can be directly and quickly realized without the need of fire operation, and the normal production and the safety problem of workers of the equipment are ensured.
In addition, the flange opening 11 and the cover body 2 are all wrapped on the inner side through the dust cover 3, so that dust cannot enter the inner part, and the locking bolt 21 is ensured to be clean, dust-free and rust-free; further, after the equipment runs for a long time, the flange opening 11 can avoid the phenomenon of air leakage, if air leakage occurs, the air flow is full of the inside of the dust cover 3 and overflows from the side edge of the flange opening 11, and dust can be effectively prevented from penetrating into the inside.
As shown in fig. 3, further, the two sides of the locking bolt 21 are respectively penetrated with a sealing ring 212, the sealing rings 212 are respectively clung to the cover body 2 and the flange opening 11, and the design can prevent the screw section of the locking bolt 21 and the nut 211 from penetrating into dust, and further ensure the sealing performance of the flange opening 11 and the cover body 2.
Further, a gasket 22 is connected between the cover body 2 and the flange opening 11, and the locking bolt 21 passes through the gasket 22, so that the overall tightness can be further enhanced.
Further, a turnover annular rubber member 35 is arranged on the circumference of the opening of the cover body 2, and the annular rubber member 35 can be tightly attached to the side edge of the flange opening 11 after being turned over. During installation, the opening of the dust cover 3 is penetrated all the way through the flange opening 11 and the cover body 2, the middle partition plate 34 abuts against the opening of the cover body 2, and the dust cover is fixed through the locking screw 343. If the intermediate partition 34 and the cover 2 are spaced apart from each other, the sleeve 344 is provided, and both ends of the sleeve 344 are tightly attached to the intermediate partition 34 and the cover 2, and the locking screw 343 is inserted through the through hole 342 of the intermediate partition 34 and then inserted through the sleeve 344 and screwed into the threaded hole of the cover 2. When the cover body 2 is completely penetrated, a certain gap exists between the cover body 2 and the circumference of the flange opening 11, and the annular rubber piece 35 is folded over at the moment to seal the gap.
As shown in fig. 4, the rotating shaft 41 of the adjusting motor 4 is connected through a bearing block 33 and a bearing inside the intermediate partition 34, and the bearing block 33 is provided on the support block 32. The rotary table 42 is slidably clamped on the rotary shaft 41, a ring groove 421 is formed in one side of the rotary table 42, a bearing 51 is arranged on the inner wall of the ring groove 421, and the telescopic shaft of the telescopic cylinder 5 is connected with the inner wall of the bearing 51. When the adjusting motor 4 rotates, the rotating shaft 41 rotates to drive the turntable 42 to rotate, and when the turntable 42 rotates, the bearing 51 in the annular groove 421 moves relatively, the telescopic end of the telescopic cylinder 5 is fixed, and the turntable 42 rotates to drive the elastic motor 6 to rotate to adjust the position and align the corresponding nut 211. After the adjustment is completed, the telescopic cylinder 5 stretches and contracts to push the rotary table 42 to slide on the rotary shaft 41, and at the same time, the buckle 61 and the elastic motor 6 are pushed to stretch and contract to enable the buckle 61 to be fastened with the nut 211. After the buckling head 61 is buckled, the elastic motor 6 can be rotated in the forward and reverse directions to realize the elastic force of the nut 211.
Further, a slider extends from the upper end of the arm 43, an annular boss 31 is provided on the inner wall of the dust cover 3, and the slider is slidably disposed on the annular boss 31. Thus, the support arm 43 is tightly attached to the annular boss 31 for guiding during rotation and extension, so that extension and rotation stability can be ensured, and accurate butt joint of the positions of the buckle 61 and the nut 211 can be ensured.
Further, an annular rotation space 341 is formed between the middle partition 34 and the cover 2, and the fastening head 61 extends from the rotation space 341 to the other side of the middle partition 34 and is in butt joint with the nut 211.
Further, the intermediate partition 34 is provided with a plurality of through holes 342, and the locking screws 343 are screwed into the threaded holes of the cover 2 through the through holes 342. When there is a corresponding distance between the intermediate plate 34 and the cover 2, the sleeve 344 is added.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a glass steel pipeline flange mouth connection structure, includes pipeline (1), is provided with flange mouth (11) on pipeline (1), flange mouth (11) and lid (2) are connected through lock bolt (21), wherein, the peripheral cover of flange mouth (11) is equipped with shield (3), shield (3) divide into two cavitys through intermediate baffle (34), intermediate baffle (34) are connected with lid (2), and shield (3) inside is provided with nut elasticity mechanism, nut elasticity mechanism includes buckle (61), elasticity motor (6), flexible cylinder (5) and accommodate motor (4), slidable is provided with carousel (42) on pivot (41) of accommodate motor (4), flexible end rotatable coupling of flexible cylinder (5) is on carousel (42), be connected with elasticity motor (6) on support arm (43) of carousel (42), elasticity motor (6) and buckle head (61) are connected, buckle head (61) can be connected with lock bolt (211) of lock bolt (21).
2. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: sealing rings (212) are respectively arranged on two sides of the locking bolt (21) in a penetrating mode, and the sealing rings (212) are respectively clung to the cover body (2) and the flange opening (11).
3. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: the side wall of the pipeline (1) is provided with an installation seat (12), and the cover body (2) is arranged on the installation seat (12).
4. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: a sealing gasket (22) is connected between the cover body (2) and the flange opening (11), and the locking bolt (21) penetrates through the sealing gasket (22).
5. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: the opening circumference of the cover body (2) is provided with a turnover annular rubber piece (35), and the annular rubber piece (35) can be tightly attached to the outer side edge of the flange opening (11) after being turned over.
6. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: the rotary shaft (41) is connected with the bearing on the inner side of the partition plate through the bearing seat (33), the rotary disc (42) is slidably clamped on the rotary shaft (41), an annular groove (421) is formed in one side of the rotary disc (42), a bearing (51) is arranged on the annular groove (421), and the telescopic shaft of the telescopic cylinder (5) is connected with the inner wall of the bearing (51).
7. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: the upper end of the support arm (43) is extended with a sliding head, the inner wall of the dust cover (3) is provided with an annular boss (31), and the sliding head is arranged on the annular boss (31) in a sliding mode.
8. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: an annular rotating space (341) is formed between the middle partition plate (34) and the cover body (2), and the buckling head (61) extends into the other side of the middle partition plate (34) from the rotating space (341) and is in butt joint with the nut (211).
9. The glass fiber reinforced plastic pipeline flange port connection structure according to claim 1, wherein: the middle partition plate (34) is provided with a plurality of through holes (342), and the locking screws (343) penetrate through the through holes (342) and are screwed in the threaded holes of the cover body (2).
CN202210098488.0A 2022-01-27 2022-01-27 Glass steel pipeline flange mouth connection structure Active CN114704700B (en)

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Application Number Priority Date Filing Date Title
CN202210098488.0A CN114704700B (en) 2022-01-27 2022-01-27 Glass steel pipeline flange mouth connection structure

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Application Number Priority Date Filing Date Title
CN202210098488.0A CN114704700B (en) 2022-01-27 2022-01-27 Glass steel pipeline flange mouth connection structure

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CN114704700A CN114704700A (en) 2022-07-05
CN114704700B true CN114704700B (en) 2024-03-12

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JPH07286691A (en) * 1994-04-18 1995-10-31 Mitsubishi Plastics Ind Ltd Double layer pipe joint with cleaning port
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CN201748090U (en) * 2010-07-19 2011-02-16 张积储 Flange bended head
CN203726116U (en) * 2014-03-07 2014-07-23 安徽理工大学 Electric flange bolt tightener
CN204785242U (en) * 2015-07-11 2015-11-18 石家庄市红日钙业有限公司 Interior carbon dioxide of tympanic bulla formula carbonization top of tower connection tower elbow for pipeline
CN206738795U (en) * 2016-08-04 2017-12-12 浙江大盛新材料股份有限公司 A kind of device for accelerating the process pipe Rapid Cleaning in decorating base paper production
CN108000127A (en) * 2017-12-12 2018-05-08 大连理工大学 A kind of aircraft engine high pressure rotor seal pan postposition nut tightening device and method
CN111515901A (en) * 2020-05-20 2020-08-11 姜勇军 Bolt fastening device for assembling motor
CN214947251U (en) * 2021-02-05 2021-11-30 广信新材料科技(长沙)有限责任公司 Pipeline cleaning mouth device
CN113966261A (en) * 2019-04-18 2022-01-21 西门子歌美飒可再生能源公司 Automatic bolt tensioning robot

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1038045A (en) * 1988-05-25 1989-12-20 法玛通公司 The take-up of connector nut and method
FR2679694A1 (en) * 1991-07-25 1993-01-29 Framatome Sa Tightening and untightening machine for bolts for fastening a cover onto an enclosure, in particular a primary pump of a nuclear power station
JPH07286691A (en) * 1994-04-18 1995-10-31 Mitsubishi Plastics Ind Ltd Double layer pipe joint with cleaning port
KR19980024828U (en) * 1998-04-17 1998-07-25 김광민 Branch pipe for gas pipe
CN201110777Y (en) * 2007-12-05 2008-09-03 宁波志清实业有限公司 Meter joint capable of measuring pressure
CN201748090U (en) * 2010-07-19 2011-02-16 张积储 Flange bended head
CN203726116U (en) * 2014-03-07 2014-07-23 安徽理工大学 Electric flange bolt tightener
CN204785242U (en) * 2015-07-11 2015-11-18 石家庄市红日钙业有限公司 Interior carbon dioxide of tympanic bulla formula carbonization top of tower connection tower elbow for pipeline
CN206738795U (en) * 2016-08-04 2017-12-12 浙江大盛新材料股份有限公司 A kind of device for accelerating the process pipe Rapid Cleaning in decorating base paper production
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CN113966261A (en) * 2019-04-18 2022-01-21 西门子歌美飒可再生能源公司 Automatic bolt tensioning robot
CN111515901A (en) * 2020-05-20 2020-08-11 姜勇军 Bolt fastening device for assembling motor
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