CN104741911B - A kind of steam generator manhole cover monoblock type bolt tension control system - Google Patents
A kind of steam generator manhole cover monoblock type bolt tension control system Download PDFInfo
- Publication number
- CN104741911B CN104741911B CN201310753889.6A CN201310753889A CN104741911B CN 104741911 B CN104741911 B CN 104741911B CN 201310753889 A CN201310753889 A CN 201310753889A CN 104741911 B CN104741911 B CN 104741911B
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- Prior art keywords
- valve
- manhole cover
- gas
- bolt
- pressure
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/067—Bolt tensioners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
Abstract
The present invention relates to nuclear power repair apparatus technical field, be specifically related to a kind of steam generator manhole cover monoblock type bolt tension control system, it is therefore an objective to solve existing manhole cover bolt installation tool and there is the risk damaging bolt, and the problem of operating time length.This steam generator manhole cover monoblock type bolt tension control system, including bolt tension parts and control block hydraulic unit with.The present invention includes bolt tension parts and control block hydraulic unit with, manhole cover bolt in primary side of steam generator manhole uncaps dismounting and pass lid seal process can be avoided to produce screw thread bonding damage, the pressure of hydraulic control system is strictly controlled simultaneously, the most safer and quick compared to existing manhole cover bolt installation tool.
Description
Technical field
The present invention relates to nuclear power repair apparatus technical field, be specifically related to a kind of steam generator manhole cover whole
Body formula bolt tension control system.
Background technology
Nuclear power station, during overhauling, needs to carry out primary side of steam generator manhole switch cover behaviour
Make.When operation, owing to vaporizer primary side is subjected to the test pressure of about 23MPa, primary side manhole
Bonnet bolt needs to provide enough pretightning force to ensure its No leakage under this test pressure cover plate for manhole.
In the past when carrying out nuclear power station maintenance, if needing open or compress cover plate for manhole, need to use hydraulic coupling
Square spanner rotates manhole cover bolt, there is the risk of damaged screw, and the operating time is long, operator
It is easily subject to the radiation of higher dosage.
Summary of the invention
Present invention aim to address that existing manhole cover bolt installation tool exists the risk damaging bolt, and
The problem of operating time length, it is provided that a kind of bolt that can quickly and securely complete screws and unscrewing operation
Steam generator manhole cover monoblock type bolt tension control system.
The present invention is achieved in that
A kind of steam generator manhole cover monoblock type bolt tension control system, including bolt tension parts and
Control block hydraulic unit with；Bolt tension parts and control block hydraulic unit with are connected by high-pressure oil pipe.
Bolt tension parts as above include piston, stretching nut, stretching cylinder body, torque spanner,
Tommy bar and interior six side ring gears；Stretching cylinder body is integral annular part, and it has cylinder holes, each cylinder holes circle
Zhou Junbu, installs the hollow ring piston with sealing ring in cylinder holes, the bottom of piston and stretching cylinder body it
Between there is oil pocket；Adjacent each cylinder holes by cylinder bottom side aperture connect, high-pressure pipe connector with stretching cylinder body and
Oil pocket between piston is connected；Stretching cylinder body is sleeved on manhole cover tensile bolt successively with piston, draws
Stretch nut and rotate the top being placed in piston, threaded with tensile bolt；Interior six side ring gears are set in manhole
On six sides of box nut, gear tommy bar is meshed with interior six side ring gears.
Control block hydraulic unit with as above includes source of the gas pneuamtic part and high-pressure hydraulics；Source of the gas gas control
Part includes source of the gas, lubricated filter, air-source inflow stop valve, air relief valve, air gauge, electromagnetic switch
Valve, flow control valve and one-way throttle valve；Lubricated filter, air-source inflow stop valve, air relief valve, gas
Pressure table, electromagnetic switch valve sequential series connect, and flow control valve, one-way throttle valve are connected in parallel in electromagnetism
After switch valve, source of the gas pneuamtic part outfan is connected with Gas-liquid pump；High-pressure hydraulics includes gas-liquid
Pump, oil suction part and force feed part；Oil suction part includes fuel tank, stop valve and a check valve, oil
Case, stop valve and a check valve sequential series connect and are connected with Gas-liquid pump inlet port；Force feed part bag
Include a check valve, high-pressure overflow valve, hydraulic oil off-load stop valve, pressure transmitter, oil gauge and fast
Change pipe to connect；The force feed mouth of Gas-liquid pump is connect be connected with tensile part by a check valve, quick change pipe, high
Pressurized overflow valve, hydraulic oil off-load stop valve, pressure transmitter, oil gauge are parallel to Gas-liquid pump force feed mouth list
After valve, wherein, high-pressure overflow valve, the oil return pipe of hydraulic oil off-load stop valve connect with fuel tank respectively
Connect.
Bolt tension parts entirety as above uses high strength alloy steel to make.
The invention has the beneficial effects as follows:
The present invention includes bolt tension parts and control block hydraulic unit with, can avoid at steam generator once
Side manhole is uncapped and is dismantled and close the bonding damage of manhole cover bolt generation screw thread, hydraulic pressure simultaneously in lid seal process
The pressure of control system is strictly controlled, compared to existing manhole cover bolt installation tool operationally
Safer and quick.
Accompanying drawing explanation
Fig. 1 be the present invention a kind of steam generator manhole cover monoblock type bolt tension control system in bolt
The global sections sectional view of tensile part；
Fig. 2 be the present invention a kind of steam generator manhole cover monoblock type bolt tension control system in bolt
The partial cross-sectional cut-away view of tensile part；
Fig. 3 be the present invention a kind of steam generator manhole cover monoblock type bolt tension control system in stretch
The top view of cylinder body；
Fig. 4 be the present invention a kind of steam generator manhole cover monoblock type bolt tension control system in hydraulic pressure
Control the circuit connection diagram of parts.
In figure: 1. primary side of steam generator manhole, 2. manhole cover, 3. manhole cover nut, 4. high-voltage tube connects
Head, 5. piston, 6. manhole cover tensile bolt, 7. stretching nut, 8. stretching cylinder body, 9. bolt stretching machine,
10. digital display centimeter, 11. torque spanners, 12. gear tommy bars, six side ring gear in 13., 14. sealing gasket pressures
Plate, 15. Manhole Sealing Joints assemblies, 16. sources of the gas, 17. lubricated filters, 18. air-source inflow stop valves, 19.
Air relief valve, 20. air gauges, 21. electromagnetic switch valves, 22. flow control valves, 23. one-way throttle valves, 24.
Gas-liquid pump, 25. fuel tanks, 26. stop valves, 27. check valves, 28. high-pressure overflow valves, 29. hydraulic oil off-loads
Stop valve, 30. pressure transmitters, 31. oil gauges, 32. quick change pipes connect.
Detailed description of the invention
Below in conjunction with the accompanying drawings with the specific embodiment a kind of steam generator manhole cover monoblock type spiral shell to the present invention
Bolt stretching control system is described in detail:
A kind of steam generator manhole cover monoblock type bolt tension control system, including bolt tension parts and
Control block hydraulic unit with, bolt tension parts and control block hydraulic unit with are connected by high-pressure oil pipe.Hydraulic control
Parts, for providing high pressure liquid force feed to bolt tension parts, can make bolt tension parts realize manhole
The stretching of lid tensile bolt 6.
As shown in Figure 1, 2, bolt tension parts include piston 5, stretching nut 7, stretching cylinder body 8,
Torque spanner 11, tommy bar 12 and interior six side ring gears 13.Stretching cylinder body 8 is integral annular part, its
On have a cylinder holes, each cylinder holes circumference uniform distribution, the hollow ring piston 5 with sealing ring is installed in cylinder holes,
Oil pocket is there is between bottom and the stretching cylinder body 8 of piston 5.Adjacent each cylinder holes is by cylinder bottom side aperture even
Logical.Oil pocket between high-pressure pipe connector 4 with stretching cylinder body 8 and piston 5 is connected；Stretching cylinder body 8 with
Piston 5 is sleeved on manhole cover tensile bolt 6 successively, and stretching nut 7 rotates the top being placed in piston 5,
Threaded with tensile bolt 6.Interior six side ring gears 13 are set on six sides of manhole cover nut 3, gear
Tommy bar 12 is meshed with interior six side ring gears 13.When torque spanner 11 rotates gear tommy bar 12, through interior
Six side ring gears 13 rotate manhole cover nut 3, it is possible to achieve the screwing and unscrewing of manhole cover nut 3.
As shown in Figure 4, control block hydraulic unit with includes source of the gas pneuamtic part and high-pressure hydraulics.Source of the gas gas
Control part includes source of the gas 16, lubricated filter 17, air-source inflow stop valve 18, air relief valve 19, air pressure
Table 20, electromagnetic switch valve 21, flow control valve 22 and one-way throttle valve 23；Lubricated filter 17, gas
Source air inlet stop valve 18, air relief valve 19, air gauge 20, electromagnetic switch valve 21 sequential series connect, stream
After control valve 22, one-way throttle valve 23 are connected in parallel in electromagnetic switch valve, source of the gas pneuamtic part exports
End is connected with Gas-liquid pump 24.High-pressure hydraulics includes Gas-liquid pump 24, oil suction part and force feed portion
Point；Oil suction part includes fuel tank 25, stop valve 26 and a check valve 27, fuel tank 25, stop valve 26
Connect with check valve 27 sequential series and be connected with Gas-liquid pump 24 inlet port.Force feed part includes one
Individual check valve 27, high-pressure overflow valve 28, hydraulic oil off-load stop valve 29, pressure transmitter 30, oil pressure
Table 31 and quick change pipe connect 32；The force feed mouth of Gas-liquid pump 24 connects 32 by a check valve 27, quick change pipe
It is connected with tensile part, high-pressure overflow valve 28, hydraulic oil off-load stop valve 29, pressure transmitter
30, after oil gauge 31 is parallel to Gas-liquid pump 24 force feed mouth check valve 27, wherein high-pressure overflow valve 28,
The oil return pipe of hydraulic oil off-load stop valve 29 is connected with fuel tank 25 respectively.
During work, first tensile part set is installed on manhole cover tensile bolt 6, then will stretching nut 7
Rotate on the tensile bolt 6 of the top being placed in piston 5, the outfan of control block hydraulic unit with is soft through high pressure
Pipe is connected to the high-pressure pipe connector 4 of tensile part；Open air-source inflow stop valve 18, start source of the gas gas control
Part, is adjusted air relief valve 19 and makes air pressure reach required value, open electromagnetic switch valve 21, adjust
One-way throttle valve 23 so that Gas-liquid pump 24 starts under conditions of pressure and flow are controlled；Through Gas-liquid pump
Big flow low-pressure gas is converted to super high pressure microstream amount hydraulic pressure and exports to bolt stretching machine 9, gas by 24 conversions
Hydraulic oil in fuel tank is sucked Gas-liquid pump 24 through stop valve 26, check valve 27 by the inlet port of liquid pump；Liquid
After force feed is by Gas-liquid pump 24 supercharging, connect 32 through check valve 27, quick change pipe, high-pressure hose is delivered to stretching
In space between Part draw cylinder body 8 and piston 5；Adjust the force value of high-pressure overflow valve 28, should
Design of pressure is the highest safe pressure of system, when the force value of high-pressure hydraulics reaches the highest of setting
During safe pressure, high-pressure overflow valve 28 automatic deloading, it is ensured that high-pressure hydraulic safety；When hydraulic pressure control
During component failure processed, open hydraulic oil off-load stop valve 14 so that high-pressure hydraulics off-load, it is ensured that whole
The safety of individual control block hydraulic unit with；It is right that the force value of high-pressure hydraulics is converted into through pressure transmitter 30
The signal of telecommunication answered also is sent to computer, automatically controls offer foundation for tensile part；Oil gauge 31
For indicating the pressure of extra high voltage system.
Uncap operation sequence: first tensile part set is installed on manhole cover tensile bolt 6, then will stretching
Nut 7 rotates and is placed on the tensile bolt 6 above piston 5, by the outfan of control block hydraulic unit with through height
Press the hose connection high-pressure pipe connector 4 to tensile part；Open air-source inflow stop valve 18, start source of the gas
Pneuamtic part, after Gas-liquid pump 24 is changed, the high pressure liquid force feed of output promotes piston 5 to away from manhole cover 2
Direction motion, manhole cover tensile bolt 6 is stretched by drawn nut 7, make manhole cover stretch spiral shell
Bolt 6 extends, and drives manhole cover nut 3 to move to the direction away from manhole cover 2；Rotating torque spanner
11, unscrew manhole cover nut 3 through gear tommy bar 12, interior six side ring gears 13, make manhole cover nut 3 and people
Port lid 2, between the two away from the displacement more than tensile bolt 6 resilience, is closed source of the gas 16, is opened hydraulic oil and unload
Lotus stop valve 29, high pressure liquid force feed returns fuel tank 25, makes high-pressure hydraulics off-load, and manhole cover stretches
Bolt 6 resilience；Dismantle tensile part again after removing all stretching nuts 7, remove everyone port lid nut
Manhole cover is pulled down after 3.
Close lid operation sequence: be first set on tensile bolt by manhole cover 2 and screw on manhole cover nut 3；
Tensile part set is installed on manhole cover tensile bolt 6, then stretching nut 7 is rotated and be placed in piston 5
Top manhole cover tensile bolt 6 on, the outfan of control block hydraulic unit with is connected to through high-pressure hose
The high-pressure pipe connector 4 of tensile part；Open air-source inflow stop valve 18, start source of the gas pneuamtic part, warp
After Gas-liquid pump 24 conversion, the high pressure liquid force feed of output promotes piston 5 to move to the direction away from manhole cover 2,
Manhole cover tensile bolt 6 is stretched by drawn nut 7, makes manhole cover tensile bolt 6 extend, band
Moving port lid nut 3 moves to the direction away from manhole cover 2；Rotating torque spanner 11, through gear tommy bar
12, interior six side ring gears 13 screw manhole cover nut 3, close source of the gas 16, open hydraulic oil off-load stop valve
29, high pressure liquid force feed returns fuel tank 25, makes high-pressure hydraulics off-load, manhole cover tensile bolt 6 times
Bullet, manhole cover 2 is compressed by manhole cover nut 3；Extension section is dismantled again after removing all stretching nuts 7
Part.
The present invention includes bolt tension parts and control block hydraulic unit with, can avoid at steam generator once
Side manhole is uncapped and is dismantled and close the bonding damage of manhole cover bolt generation screw thread, hydraulic pressure simultaneously in lid seal process
The pressure of control system is strictly controlled, compared to existing manhole cover bolt installation tool operationally
Safer and quick.
Claims (2)
1. a steam generator manhole cover monoblock type bolt tension control system, it is characterised in that: its bag
Including bolt tension parts and control block hydraulic unit with, bolt tension parts and control block hydraulic unit with pass through hydraulic oil
Pipe connects；
Described bolt tension parts include piston (5), stretching nut (7), stretching cylinder body (8), power
Square spanner (11), gear tommy bar (12) and interior six side ring gears (13)；Stretching cylinder body (8) is monoblock type
Ring-shaped work pieces, installs the hollow with sealing ring in it has cylinder holes, each cylinder holes circumference uniform distribution, cylinder holes
, between bottom and stretching cylinder body (8) of piston (5), there is oil pocket in annular piston (5)；Adjacent each cylinder
Hole by cylinder bottom side aperture connect, high-pressure pipe connector (4) with stretching cylinder body (8) and piston (5) it
Between oil pocket be connected；Stretching cylinder body (8) and piston (5) are sleeved on manhole cover tensile bolt (6) successively
On, stretching nut (7) rotates the top being placed in piston (5), threadeds with tensile bolt (6)；
Interior six side ring gears (13) are set on six sides of manhole cover nut (3), gear tommy bar (12) and interior six
Side ring gear (13) is meshed；
Described control block hydraulic unit with includes source of the gas pneuamtic part and high-pressure hydraulics；Source of the gas pneuamtic part
Including source of the gas (16), lubricated filter (17), air-source inflow stop valve (18), air relief valve (19),
Air gauge (20), electromagnetic switch valve (21), flow control valve (22) and one-way throttle valve (23)；Profit
Slip over filter (17), air-source inflow stop valve (18), air relief valve (19), air gauge (20), electromagnetism
Switch valve (21) sequential series connects, and flow control valve (22), one-way throttle valve (23) are connected in parallel
After electromagnetic switch valve, source of the gas pneuamtic part outfan is connected with Gas-liquid pump (24)；High pressure liquid splenium
Divide and include Gas-liquid pump (24), oil suction part and force feed part；Oil suction part includes fuel tank (25), cut-off
Valve (26) and a check valve (27), fuel tank (25), stop valve (26) and a check valve (27)
Sequential series connects and is connected with Gas-liquid pump (24) inlet port；Force feed part include another check valve (27),
High-pressure overflow valve (28), hydraulic oil off-load stop valve (29), pressure transmitter (30), oil gauge (31),
Quick change pipe connects (32)；The force feed mouth of Gas-liquid pump (24) is connect by another check valve (27), quick change pipe
(32) be connected with bolt tension parts, high-pressure overflow valve (28), hydraulic oil off-load stop valve (29),
Pressure transmitter (30), oil gauge (31) are parallel to another check valve of Gas-liquid pump (24) force feed mouth
(27) after, wherein, high-pressure overflow valve (28), the oil return pipe of hydraulic oil off-load stop valve (29) divide
It is not connected with fuel tank (25).
Steam generator manhole cover monoblock type bolt tension control system the most according to claim 1,
It is characterized in that: described bolt tension parts entirety uses high strength alloy steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753889.6A CN104741911B (en) | 2013-12-31 | 2013-12-31 | A kind of steam generator manhole cover monoblock type bolt tension control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310753889.6A CN104741911B (en) | 2013-12-31 | 2013-12-31 | A kind of steam generator manhole cover monoblock type bolt tension control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104741911A CN104741911A (en) | 2015-07-01 |
| CN104741911B true CN104741911B (en) | 2017-01-04 |
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| CN201310753889.6A Active CN104741911B (en) | 2013-12-31 | 2013-12-31 | A kind of steam generator manhole cover monoblock type bolt tension control system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106736480A (en) * | 2016-12-31 | 2017-05-31 | 马鞍山市三江机械有限公司 | A kind of hydraulic elongator and its drawing process |
| CN108747962B (en) * | 2018-07-25 | 2023-09-08 | 三门核电有限公司 | Tool and method for removing blocking plate of steam generator |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101649929B (en) * | 2009-07-07 | 2011-05-25 | 中国海洋石油总公司 | Deep sea flange connecting bolt library screwing device |
| CN201677169U (en) * | 2010-05-20 | 2010-12-22 | 海泰斯（北京）工程设备有限公司 | Novel undersea hydraulic bolt stretcher |
| CN201769044U (en) * | 2010-07-29 | 2011-03-23 | 德阳市西川机械技术研究所 | Boost type hydraulic bolt stretcher |
| JP5342609B2 (en) * | 2011-07-25 | 2013-11-13 | 株式会社日本製鋼所 | Bolt tensioner |
| CN202991689U (en) * | 2012-10-19 | 2013-06-12 | 北京雷蒙赛博机电技术有限公司 | Oil cylinder of integral stud tensioner and integral stud tensioner |
| CN203649889U (en) * | 2013-12-31 | 2014-06-18 | 中核武汉核电运行技术股份有限公司 | Vapor generator manhole cover integral type bolt stretching control system |
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| CN104741911A (en) | 2015-07-01 |
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