CN104097058B - A kind of bolt stretching machine sealed for nuclear reactor pressure container - Google Patents
A kind of bolt stretching machine sealed for nuclear reactor pressure container Download PDFInfo
- Publication number
- CN104097058B CN104097058B CN201410323743.2A CN201410323743A CN104097058B CN 104097058 B CN104097058 B CN 104097058B CN 201410323743 A CN201410323743 A CN 201410323743A CN 104097058 B CN104097058 B CN 104097058B
- Authority
- CN
- China
- Prior art keywords
- nut
- stretching
- oil cylinder
- hydraulic motor
- load
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000036316 preload Effects 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims description 2
- 206010037759 Radiation injury Diseases 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 16
- 238000010248 power generation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 210000004940 Nucleus Anatomy 0.000 description 1
- 210000001215 Vagina Anatomy 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a kind of bolt stretching machine sealed for nuclear reactor pressure container, drive gear, stretching screw nut hydraulic motor, thrust adapter including stretching nut, drive oil cylinder, annular mounting seat, pre-load nut hydraulic motor and pre-load nut to drive gear.Present invention employs full hydraulic drive, owing to hydraulic-driven is big, so the volume of present device is little compared with mechanically operated power densities such as common gears.The present invention uses series connection to add the hydraulic cylinder of parallel-connection structure, drives oil cylinder to install in stretching-machine central shaft lateral symmetry, and each cylinder block divides upper and lower two die cavities, so under conditions of insufficient space, still can improve the output pulling force of bolt stretching machine.The present invention can realize full automation during using, such that it is able to reduce the nuclear radiation injury suffered by operator.The present invention uses unitary structure, can select the quantity of bolt stretching machine according to the size of nuclear reactor, such that it is able to meet the nuclear reactor of various sizes.
Description
Technical field
The present invention relates to a kind of bolt tension device, a kind of seal for nuclear reactor pressure container
Bolt stretching machine.
Background technology
The main forms of electricity generation of China is firepower and hydroelectric generation at present, but waterpower and thermal power generation are the most remote
Far can not meet the national economic development and the need for electricity of people's daily life, so the gesture that taps a new source of energy exists
Must go.Nuclear energy power generation is accepted by increasing country as the energy of a kind of emerging cleaning.It is to continue
A kind of technology new forms of energy the most ripe, most widely used after water power, thermoelectricity.On the one hand hydroelectric generation is subject to
To the restriction of geographical environment, the ecological annular of locality on the other hand can be affected.The major defect of thermal power generation is
Pollute environment, and the coal burnt belongs to nonrenewable resources.Nuclear energy power generation is made by some developed countries
Main forms of electricity generation for this country.Therefore, Nuclear Power Development, to China's the Implement of sustainable development strategy, solves energy
Source shortage and problem of environmental pollution have become instant policy.
The nucleus equipment of nuclear power station is exactly nuclear reactor, and it is nuclear power station " heart ", is also nuclear energy power generation
Motive power.Staff, during loading and changing the nuclear fuel in nuclear reactor, needs to open and close
The container cap of nuclear reactor.When opening or close top cover, generally use bolt tensioning jack that bolt is drawn
Stretch fastening and the dismounting realizing nut.Existing nuclear power bolt stretching machine generally there are following problem:
1, when carrying out bolt tension, on-the-spot manual intervention is needed.May be to scene when loading nuclear fuel
The personnel intervened cause nuclear radiation injury.
2, this bolt stretching machine of Current Domestic used in nuclear power station is all to use imported product.Owing to installing sky
Between not enough, the tensile force needing output is big, and this bolt stretching machine the most all uses the hydraulic system of supertension,
Domestic prior art typically cannot realize the highest pressure.
Summary of the invention
For solving the problems referred to above that prior art exists, the present invention to design a kind of without on-the-spot manual intervention,
Without using the bolt stretching machine sealed for nuclear reactor pressure container of the hydraulic system of supertension.
To achieve these goals, technical scheme is as follows: a kind of for nuclear reactor pressure container
Seal bolt stretching machine, including stretching nut drive gear, stretching screw nut hydraulic motor, thrust adapter,
Oil cylinder, annular mounting seat, pre-load nut hydraulic motor and pre-load nut is driven to drive gear；
Described stretching screw nut hydraulic motor is fixed on thrust adapter, stretches the defeated of screw nut hydraulic motor
Shaft drives gear to be connected with stretching nut, and stretching nut drives gear and stretching nut gear teeth meshing；
Described stretching nut is connected with each other by threaded engagement with pretension stud；
Described driving oil cylinder has two, is respectively symmetrically the both sides installing pretension center stud axle, constitutes parallel connection
Structure；The lower surface of the described cylinder body driving oil cylinder is fixed in annular mounting seat, and cylinder body is divided into upper and lower two
Individual die cavity, constitutes cascaded structure；Drive oil cylinder to generally form series connection and add the structure of parallel connection；
Described annular mounting seat is placed on high pressure nuclear reaction cover, is an annular device, at its circle
Uniform multiple holes on week, install a pretension stud in each hole；
Described pre-load nut hydraulic motor is installed in annular mounting seat, and its output shaft drives with pre-load nut
Moving gear connects, and pre-load nut drives gear and drives pre-load nut gear teeth meshing；
Described pre-load nut is by screw thread and pretension Stud connection, and the lower end of pretension stud is threaded connection
On high pressure nuclear reaction tank, upper end is connected with each other with stretching nut and pre-load nut respectively by screw thread.
The functional principal of the present invention is as follows:
The output shaft of stretching screw nut hydraulic motor is rotated by stretching nut driving gear drives stretching nut；
The lower surface of stretching nut contacts with each other with thrust adapter, drives oil cylinder pushing thrust adapter and draws
Stretch nut to move upward, thus by stretching nut, pretension stud is elongated；
Pre-load nut hydraulic motor is rotated by pre-load nut driving gear drives pre-load nut；
Pre-load nut realizes pressuring action by pre-load nut pad to high pressure nuclear reaction cover.
Pretension stud provides thrust for high pressure nuclear reaction tank with high pressure nuclear reaction cover.
The radioactive substance used by nuclear reactor of high pressure nuclear reaction tank internal storage high pressure, anti-by high pressure core
Answering cover to seal, pretension stud provides main thrust.
Compared with prior art, the method have the advantages that
1, full hydraulic drive.Present invention employs full hydraulic drive, due to the gear etc. that hydraulic-driven is more common
Mechanically operated power density is big, so the volume of present device is little.
2, be multiplied output.The present invention uses series connection to add the hydraulic cylinder of parallel-connection structure, drives oil cylinder in stretching
Machine central shaft lateral symmetry is installed, and each cylinder block divides upper and lower two die cavities, so at the bar of insufficient space
Under part, still can improve the output pulling force of bolt stretching machine.
3, production domesticization is easily realized.The main cause that import bolt stretching machine cannot domesticize is domestic height
Press pump cannot export enough pressure, and hydraulic system here uses hydraulic intensifier to be exported by domestic hydraulic pump
Pressure provides sufficiently high, and wherein hydraulic intensifier uses existing product.
4, without on-the-spot manual intervention.The present invention can realize full automation during using, this
Bright automation process determines tensile force according to tensile strength, yield factor and the percentage elongation of set material,
Utilize hydraulic pump to coordinate supercharger to produce expansion force, make the bolt of the power that is applied in be drawn in its elastic deformation area
Long, it is not necessary to the execute-in-place of operator, such that it is able to reduce the nuclear radiation injury suffered by operator.
5, highly versatile.The present invention uses unitary structure, can select spiral shell according to the size of nuclear reactor
The quantity of bolt stretching-machine, such that it is able to meet the nuclear reactor of various sizes.
Accompanying drawing explanation
The present invention has 2, accompanying drawing, wherein:
Fig. 1 is the structural representation of the present invention.
Fig. 2 is high pressure nuclear reaction can cover structure schematic diagram.
In figure: 1, stretching nut drive gear, 2, stretching screw nut hydraulic motor, 3, stretching nut, 4,
Thrust adapter, 5, drive oil cylinder, 6, annular mounting seat, 7, pre-load nut hydraulic motor, 8, pretension
Nut drives gear, and 9, high pressure nuclear reaction tank, 10, high pressure nuclear reaction cover, 11, pre-load nut pad,
12, pre-load nut, 13, pretension stud.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is further described through.As it is shown in figure 1, a kind of series parallel structure
Full hydraulic drive bolt stretching machine, including stretching nut drive gear 1, stretching screw nut hydraulic motor 2, draw
Stretch nut 3, thrust adapter 4, drive oil cylinder 5, annular mounting seat 6, pre-load nut hydraulic motor 7, pre-
Jack panel drives gear 8；
Described stretching screw nut hydraulic motor 2 is fixed on thrust adapter 4, stretches screw nut hydraulic motor 2
Output shaft by stretching nut drive gear 1 drive stretching nut 3 rotate；
Described stretching nut 3 is connected with each other by threaded engagement with pretension stud 13, its lower surface and thrust
Adapter 4 contacts with each other, and drives oil cylinder 5 to promote thrust adapter 4 and stretching nut 3 to move upward, from
And by stretching nut 3, pretension stud 13 is elongated；
The lower surface of the described cylinder body driving oil cylinder 5 is fixed in annular mounting seat 6, piston rod and thrust
Adapter 4 contacts with each other, and thrust adapter 4 can be promoted to move up；
Described annular mounting seat 6 is placed on high pressure nuclear reaction cover 10, is that an annular device is at it
Uniform multiple holes on circumference, install a pretension stud 13 in each hole, be used for supporting each group of bolt tension
Machine, including driving oil cylinder 5, thrust adapter 4, stretching nut 3, stretching screw nut hydraulic motor 2, stretching
Nut drives gear 1 parts such as grade；
Described pre-load nut hydraulic motor 7 is installed in annular mounting seat 6, is driven by pre-load nut
Gear 8 drives pre-load nut 12 to rotate；
Described pre-load nut 12 is connected with pretension stud 13, below with pre-load nut pad by screw thread
11 contact with each other, and pre-load nut pad 11 contacts with each other with high pressure nuclear reaction cover 10, and pre-load nut 12 can
High pressure nuclear reaction cover 10 is realized pressuring action by pre-load nut pad 11.
The lower end of described pretension stud 13 is threadedly attached on high pressure nuclear reaction tank 9, and spiral shell is passed through in upper end
Stricture of vagina is connected with each other with stretching nut 3 and pre-load nut 12 respectively.Anti-with high pressure core for high pressure nuclear reaction tank 9
Cover 10 is answered to provide thrust.
The internal radioactive substance used by nuclear reactor taking up high pressure of described high pressure nuclear reaction tank 9, passes through
High pressure nuclear reaction cover 10 seals, and pretension stud 13 provides main thrust.
The specific works process that the present invention carries out tools for bolts ' pretension is as follows:
1, low-pressure hydraulic oil be input to stretch screw nut hydraulic motor 2 drive stretching nut 3 rotate, stretch nut
3 are screwed with pretension stud 13 by threaded engagement, make thrust adapter 4 be tightly pressed against on driving oil cylinder 5.
2, high pressure liquid force feed is input to drive oil cylinder 5, drives the piston rod of oil cylinder 5 by thrust adapter 4
Promote stretching nut 3 to move up, thus realize the pretension to pretension stud 13 and stretch.
3, when the pretightning force in pretension stud 13 reaches setting value, oil cylinder 5 is driven to stop output pressurize.
4, pre-load nut hydraulic motor 7 drives pre-load nut 12 to screw, and drives oil cylinder 5 off-load.
It it is more than this invention whole work process to the pretension of nuclear power bolt.To the demounting procedure of bolt with
Pretension is similar to, and simply screws and becomes rotation and send.
The foregoing is only presently preferred embodiments of the present invention, not with the present invention for limiting, all at this
Any amendment, equivalent and the improvement etc. made within bright spirit and principle, should be included in the present invention
Protection domain within.
Claims (1)
1. the bolt stretching machine sealed for nuclear reactor pressure container, it is characterised in that: include stretching
Nut drive gear (1), stretching screw nut hydraulic motor (2), thrust adapter (4), drive oil cylinder (5),
Annular mounting seat (6), pre-load nut hydraulic motor (7) and pre-load nut drive gear (8)；
Described stretching screw nut hydraulic motor (2) is fixed on thrust adapter (4), stretches nut liquid
The output shaft of pressure motor (2) drives gear (1) to be connected with stretching nut, and stretching nut drives gear (1)
With stretching nut (3) gear teeth meshing；
Described stretching nut (3) is connected with each other by threaded engagement with pretension stud (13)；
Described driving oil cylinder (5) has two, is respectively symmetrically the both sides installing pretension stud (13) central shaft,
Constitute parallel-connection structure；The lower surface of the cylinder body of described driving oil cylinder (5) is fixed on annular mounting seat (6)
On, cylinder body is divided into upper and lower two die cavities, constitutes cascaded structure；Oil cylinder (5) is driven to generally form series connection adduction
The structure of connection；
Described annular mounting seat (6) is placed on high pressure nuclear reaction cover (10), is an annular dress
Put, uniform multiple holes on its circumference, a pretension stud (13) is installed in each hole；
Described pre-load nut hydraulic motor (7) is installed in annular mounting seat (6), its output shaft with
Pre-load nut drives gear (8) to connect, and pre-load nut drives gear (8) and drives pre-load nut (12)
Gear teeth meshing；
Described pre-load nut (12) is connected with pretension stud (13) by screw thread, pretension stud (13)
Lower end be threadedly attached on high pressure nuclear reaction tank (9), upper end by screw thread respectively with stretching nut (3)
And pre-load nut (12) is connected with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323743.2A CN104097058B (en) | 2014-07-08 | A kind of bolt stretching machine sealed for nuclear reactor pressure container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410323743.2A CN104097058B (en) | 2014-07-08 | A kind of bolt stretching machine sealed for nuclear reactor pressure container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104097058A CN104097058A (en) | 2014-10-15 |
| CN104097058B true CN104097058B (en) | 2016-11-30 |
Family
ID=
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815344A (en) * | 1986-04-22 | 1989-03-28 | Skoda, Koncernovy Podnik | Control mechanism of a bolt stressing unit |
| CN201140330Y (en) * | 2007-12-26 | 2008-10-29 | 南车戚墅堰机车有限公司 | Hydraulic drawing machine for bolt of cylinder head |
| CN201524901U (en) * | 2009-09-24 | 2010-07-14 | 大连交通大学 | Novel bolt stretching machine |
| CN201720677U (en) * | 2010-04-01 | 2011-01-26 | 大连交通大学 | Parallel-drive hydraulic bolt stretcher |
| CN202037441U (en) * | 2011-01-25 | 2011-11-16 | 南通高盛机械制造有限公司 | Automatic reset screw bolt hydraulic pre-tightening device |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4815344A (en) * | 1986-04-22 | 1989-03-28 | Skoda, Koncernovy Podnik | Control mechanism of a bolt stressing unit |
| CN201140330Y (en) * | 2007-12-26 | 2008-10-29 | 南车戚墅堰机车有限公司 | Hydraulic drawing machine for bolt of cylinder head |
| CN201524901U (en) * | 2009-09-24 | 2010-07-14 | 大连交通大学 | Novel bolt stretching machine |
| CN201720677U (en) * | 2010-04-01 | 2011-01-26 | 大连交通大学 | Parallel-drive hydraulic bolt stretcher |
| CN202037441U (en) * | 2011-01-25 | 2011-11-16 | 南通高盛机械制造有限公司 | Automatic reset screw bolt hydraulic pre-tightening device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205478080U (en) | Sewage power generation system based on hydraulic turbine | |
| CN203098169U (en) | Energy storing power generation system | |
| CN106637279A (en) | Hydrogen production and hydrogenation network | |
| CN104097058B (en) | A kind of bolt stretching machine sealed for nuclear reactor pressure container | |
| CN103362555B (en) | Air energy circulation engine | |
| CN203175839U (en) | Hydraulic balance type boosting water injection pump | |
| CN104097058A (en) | Stud tensioner for sealing nuclear reactor pressure vessels | |
| CN201891590U (en) | Novel horizontal multi-stage pump stamping tooling | |
| CN206246295U (en) | A kind of cable fixture of wind power generating set | |
| CN201827010U (en) | Hydroelectric generation device with cooling tower | |
| CN202431428U (en) | Clean electric energy production device | |
| CN102979687A (en) | Power generating system of gravitational potential energy power module | |
| CN202662429U (en) | Mutual inductor degassing device | |
| CN201937442U (en) | Electric flywheel tooth and hydraulic flywheel tooth force boosting generator set | |
| CN203670168U (en) | Micro water head fluid-energy water pumping system | |
| CN206973249U (en) | A kind of full-automatic E processing line degreasing unit | |
| CN201708049U (en) | Spring hydraulic operating mechanism energy storing device | |
| CN201507328U (en) | Steam generation device for water tank of large-sized diesel engine or gasoline engine | |
| CN205117594U (en) | Energy -conserving power supply unit | |
| CN201077928Y (en) | Steel wire rope strand-spraying celvacene greases device | |
| CN204984749U (en) | A pressure power generation device for highway deceleration strip | |
| CN109256574A (en) | It is a kind of to utilize organic liquid hydrogen storage comprehensive generating system | |
| CN204739216U (en) | Second grade transmission of condenser secondary filter screen | |
| CN103591004A (en) | Pumping system powered by micro-head liquid energy | |
| CN204003802U (en) | Hydraulic mechanism oil filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20200708 |