CN204724669U - Reactor pressure vessel kingbolt combined integrate stretching-machine structure - Google Patents
Reactor pressure vessel kingbolt combined integrate stretching-machine structure Download PDFInfo
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- CN204724669U CN204724669U CN201520470041.7U CN201520470041U CN204724669U CN 204724669 U CN204724669 U CN 204724669U CN 201520470041 U CN201520470041 U CN 201520470041U CN 204724669 U CN204724669 U CN 204724669U
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- stretching
- rotating mechanism
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- nut rotating
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Abstract
The utility model discloses a kind of reactor pressure vessel kingbolt combined integrate stretching-machine structure, this stretching-machine comprises Survey control cabinet and Hydraulic Station, also comprise a more than draw unit, described draw unit includes hydraulic cylinder, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are connected by cable with Survey control cabinet, Hydraulic Station is connected by flexible pipe with hydraulic cylinder, to the multistage boosting of hydraulic cylinder in the using method that the utility model provides.The stretching-machine that the utility model provides lifts, repair and maintenance is convenient, operation strategies is wide, and multiple kingbolt amount of tension that the using method that the utility model provides can realize being stretched meet the requirement of uniformity and uniformity.
Description
Technical field
The utility model relates to bolt stretching machine apparatus field, particularly relates to a kind of reactor pressure vessel kingbolt combined integrate stretching-machine structure.
Background technology
In technical field of nuclear power, reactor pressure vessel is the container of loaded with nuclear fuel, nuclear fuel works under the state of high temperature, high pressure and high radiation, any trickle leakage part brings serious damage can to surrounding environment and personnel, on pressure vessel, the pretightning force of multiple kingbolt requires uniformity simultaneously, and control in certain scope, and the consistent object of pretightning force can not be reached by the manual quiet kingbolt of spanner that uses.Like this, reactor pressure vessel kingbolt stretching-machine is the special main equipment of each nuclear power station and reactor indispensability, for the quick and precisely stretching of reactor pressure vessel kingbolt, realize the positiver sealing during lid of pressure vessel pass, quick and precisely dismounting when uncapping.Domestic and international kingbolt stretching-machine comprises monomer-type stretching-machine and monoblock type stretching-machine two type.
In prior art, monomer-type stretching-machine once can only stretch to two kingbolts, needs repeatedly to stretch one by one to whole bolt stage by stage, and inefficiency, the aspects such as the accuracy of stretching and uniformity are all undesirable.Monoblock type stretching-machine can by all kingbolts simultaneously, homogeneity stretches, have efficient, stable advantage, the accuracy simultaneously stretched and uniformity are very good, but overall structure is huge, and transhipment with install and can only entirety carry out, safeguard with use by force specialized; Due to three generations's nuclear power AP1000 heap-type adopt integrated top cover, integrally stretching machine can not integral hoisting on pressure vessel, therefore can not use integrally stretching machine.
Utility model content
For in above-mentioned prior art for the integrated top cover that such as three generations's nuclear power AP1000 type pressure vessel adopts, integrally stretching machine can not integral hoisting on pressure vessel, therefore integrally stretching machine can not be used, can not have to this model or other problem that equal technological requirement kingbolt carries out simultaneously, homogeneity stretches, the utility model provides a kind of reactor pressure vessel kingbolt combined integrate stretching-machine structure.
For the problems referred to above, the reactor pressure vessel kingbolt combined integrate stretching-machine structure that the utility model provides is achieved the goal by following technical essential: reactor pressure vessel kingbolt combined integrate stretching-machine structure, the Hydraulic Station comprising Survey control cabinet and be connected with Survey control cabinet, also comprise a more than draw unit, described draw unit includes hydraulic cylinder, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism, described stretching nut rotating mechanism is fixedly connected with hydraulic cylinder, the pressure medium input of hydraulic cylinder is connected with Hydraulic Station, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are all electrically connected with Survey control cabinet, and mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are connected by cable with Survey control cabinet, Hydraulic Station is connected by flexible pipe with hydraulic cylinder.
Concrete, in the utility model, the Survey control cabinet arranged completes the function such as rotation control, man-machine interaction of the data acquisition of kingbolt tensile pressures, Hydraulic Station control, amount of tension data acquisition, stretching nut and mother nut, above stretching nut is the attaching nut with kingbolt on stretching nut rotating mechanism, and mother nut is the nut on kingbolt; Hydraulic Station provides stable pressure source for whole device; Each draw unit completes to be measured the stretching of corresponding kingbolt and amount of tension, brakes the rotation of corresponding mother nut and stretching nut; Each draw unit acting in conjunction completes the integrally stretching of reactor pressure vessel kingbolt.In above structure, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are connected by cable with Survey control cabinet, the connected mode that Hydraulic Station is connected by flexible pipe with hydraulic cylinder, pressure medium conduit and electrical connection is not had between each draw unit, relatively independent, in installment and debugging process, can according to the volume of pressure vessel and kingbolt arrangement form, lift each draw unit, install and use separately, namely the utility model can be installed easily, debug and use according to concrete utilization occasion.The stretching function that the utility model provides is applicable to various heap-type (comprising AP1000), meets two generations and three generations's nuclear power station and engineering project requirement, realization response core pressure vessel kingbolt integrally stretching.As those skilled in the art, the utility model also can be used for the bolt tension on other field or equipment.
Further technical scheme as reactor pressure vessel kingbolt combined integrate stretching-machine structure:
For ease of forming easy-to-mount type of attachment between Survey control cabinet and draw unit, described cable has at least on one end and is provided with aviation plug, and described flexible pipe has at least on one end and is provided with snap joint.
The frame mode of hydraulic tensioning power is not subject to as a kind of stretch nut rotating mechanism version and its upper weak element, described stretching nut rotating mechanism comprises stretching nut motor and stretching nut, and the tie point of described hydraulic cylinder and stretching nut rotating mechanism is positioned on stretching nut.In above structure, cylinder body and the relatively turnable hydraulic cylinder of piston is adopted to realize.
The stretching-machine provided for ease of the utility model can form modular construction, and also comprise the stretching platform that more than and quantity are less than draw unit quantity, described stretching platform is rigid member, and each stretching platform all arranges at least one draw unit.The draw unit of an above stretching platform combination on it forms a stretching assembly, like this, a stretching assembly completes one or more kingbolt and stretches, multiple stretching assembly has combined integrally stretching, the stretching platform more than arranged can arrange different structure form and draw unit arrangement according to concrete utilization occasion, so not only can realize modularization Uniform Tension, be conducive to improving the efficiency of loading and unloading of the utility model on pressure vessel simultaneously.
For ease of obtaining high-pressure medium that more high pressure and pressure are more stable to drive hydraulic cylinder, each stretching platform is provided with a pressurized cylinder, the cylinder pressure medium input of the draw unit on each stretching platform is all connected on the output of pressurized cylinder, and the input of pressurized cylinder is connected with Hydraulic Station.
For the benefit of the utility model uses high-pressure medium as the security of Driven by Hydraulic Cylinder, also comprise the safety device for flexible pipe security protection, described safety device be safety guard, Pressure gauge, relief valve, one or more in the pressure sensor that is connected with Hydraulic Station.
Meanwhile, the utility model additionally provides a kind of using method of stretching-machine, and this stretching-machine is the reactor pressure vessel kingbolt combined integrate stretching-machine structure described in above-mentioned any one, and described using method comprises the following steps that order is carried out:
1), adopt hanging device by draw unit one by one handling to pressure vessel top, complete the connection of screw thread on the connection of mother nut rotating mechanism and kingbolt upper cap nut and stretching nut rotating mechanism and kingbolt;
2) cable, is adopted to complete the electrical connection of each draw unit and Survey control cabinet and adopt flexible pipe to complete Hydraulic Station to be connected with the pressure medium conduit of each draw unit;
3), at Survey control set amount of tension parameter cashier's office in a shop, stretching nut rotating mechanism completes single according to amount of tension parameter and stretches, and the amount of tension that single stretches is not more than total amount of tension of requirement;
4), step 3) is repeated, until the elongation of the kingbolt that is stretched reaches total amount of tension.
In above step 3), be intended to open one stretching mode step by step, adopting stretches step by step not only can ensure that the tensile pressures on single kingbolt stablizes increase gently, can ensure that multiple kingbolt meets the requirement of amount of tension uniformity and uniformity simultaneously, as a kind of concrete scheme, can be set as that point three phases carries out, namely be respectively 1/3rd of final pressure (pressure that total amount of tension is corresponding), 2/3rds, final pressure, also can user's setting as required; Often completing a staged pressure retention time is that system to judge after pressure stability 1 minute automatically, also can user's setting, ensures that tensile pressures is stable and arrives setting value.
Further technical scheme as the using method of stretching-machine:
For the uniformity of each kingbolt extended length in further balanced multiple kingbolt simultaneously drawing process, be beneficial to the uniformity that the sealing effectiveness of the bolting face that kingbolt uses is stressed with each kingbolt, also set-up procedure is comprised between step 3) and step 4), described set-up procedure is: after draw unit executes the amount of tension numerical value of input, by finely tuning the actual pressure of hydraulic cylinder in each draw unit, the actual amount of tension of the kingbolt that each draw unit is corresponding is finely tuned.Above hydraulic cylinder actual pressure fine setting can adopt and be realized the form of hydraulic cylinder pressure relief.
The utility model has following beneficial effect:
1, the utility model provides a kind of reactor pressure vessel kingbolt combined integrate stretching-machine structure, in this stretching-machine, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are connected by cable with Survey control cabinet, the connected mode that Hydraulic Station is connected by flexible pipe with hydraulic cylinder, pressure medium conduit and electrical connection is not had between each draw unit, relatively independent, in installment and debugging process, can according to the volume of pressure vessel and kingbolt arrangement form, separately each draw unit is lifted, install and use, namely the utility model can be installed easily according to concrete utilization occasion, debugging and use.The stretching function that the utility model provides is applicable to various heap-type (comprising AP1000), meets two generations and three generations's nuclear power station and engineering project requirement, realization response core pressure vessel kingbolt integrally stretching.As those skilled in the art, the utility model also can be used for the bolt tension on other field or equipment.
2, the using method of more than one stretching-machines that provides of the utility model, in the step 3) of the method, open one stretching mode step by step, adopting stretches step by step not only can ensure that the tensile pressures on single kingbolt stablizes increase gently, can ensure that multiple kingbolt meets the requirement of amount of tension uniformity and uniformity simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of a reactor pressure vessel kingbolt combined integrate stretching-machine structure described in the utility model specific embodiment;
Fig. 2 is the system composition diagram of the reactor pressure vessel kingbolt combined integrate stretching-machine structure described in embodiment 2.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not limited only to following examples.
Embodiment 1:
As shown in Figure 1, reactor pressure vessel kingbolt combined integrate stretching-machine structure, the Hydraulic Station comprising Survey control cabinet and be connected with Survey control cabinet, also comprise a more than draw unit, described draw unit includes hydraulic cylinder, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism, described stretching nut rotating mechanism is fixedly connected with hydraulic cylinder, the pressure medium input of hydraulic cylinder is connected with Hydraulic Station, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are all electrically connected with Survey control cabinet, and mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are connected by cable with Survey control cabinet, Hydraulic Station is connected by flexible pipe with hydraulic cylinder.
In the present embodiment, the Survey control cabinet arranged completes the function such as rotation control, man-machine interaction of the data acquisition of kingbolt tensile pressures, Hydraulic Station control, amount of tension data acquisition, stretching nut and mother nut, above stretching nut is the attaching nut with kingbolt on stretching nut rotating mechanism, and mother nut is the nut on kingbolt; Hydraulic Station provides stable pressure source for whole device; Each draw unit completes to be measured the stretching of corresponding kingbolt and amount of tension, brakes the rotation of corresponding mother nut and stretching nut; Each draw unit acting in conjunction completes the integrally stretching of reactor pressure vessel kingbolt.In above structure, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are connected by cable with Survey control cabinet, the connected mode that Hydraulic Station is connected by flexible pipe with hydraulic cylinder, pressure medium conduit and electrical connection is not had between each draw unit, relatively independent, in installment and debugging process, can according to the volume of pressure vessel and kingbolt arrangement form, lift each draw unit, install and use separately, namely the utility model can be installed easily, debug and use according to concrete utilization occasion.The stretching function that the utility model provides is applicable to various heap-type (comprising AP1000), meets two generations and three generations's nuclear power station and engineering project requirement, realization response core pressure vessel kingbolt integrally stretching.As those skilled in the art, the utility model also can be used for the bolt tension on other field or equipment.
In the present embodiment, the torque of mother nut rotating mechanism and stretching nut rotating mechanism is all from motor, and be convenient to as a kind of the version controlling corresponding nut rotating cycle, above motor is servomotor.
Embodiment 2:
As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1: the further technical scheme as reactor pressure vessel kingbolt combined integrate stretching-machine structure:
For ease of forming easy-to-mount type of attachment between Survey control cabinet and draw unit, described cable has at least on one end and is provided with aviation plug, and described flexible pipe has at least on one end and is provided with snap joint.
The frame mode of hydraulic tensioning power is not subject to as a kind of stretch nut rotating mechanism version and its upper weak element, described stretching nut rotating mechanism comprises stretching nut motor and stretching nut, and the tie point of described hydraulic cylinder and stretching nut rotating mechanism is positioned on stretching nut.In above structure, cylinder body and the relatively turnable hydraulic cylinder of piston is adopted to realize.
The stretching-machine provided for ease of the utility model can form modular construction, and also comprise the stretching platform that more than and quantity are less than draw unit quantity, described stretching platform is rigid member, and each stretching platform all arranges at least one draw unit.The draw unit of an above stretching platform combination on it forms a stretching assembly, like this, a stretching assembly completes one or more kingbolt and stretches, multiple stretching assembly has combined integrally stretching, the stretching platform more than arranged can arrange different structure form and draw unit arrangement according to concrete utilization occasion, so not only can realize modularization Uniform Tension, be conducive to improving the efficiency of loading and unloading of the utility model on pressure vessel simultaneously.In the present embodiment, this technical scheme is used for the kingbolt stretching that heap-type is the pressure vessel of AP1000, and the quantity for stretching assembly of setting is 5, each stretching assembly comprises again 9 draw unit.
For ease of obtaining high-pressure medium that more high pressure and pressure are more stable to drive hydraulic cylinder, each stretching platform is provided with a pressurized cylinder, the cylinder pressure medium input of the draw unit on each stretching platform is all connected on the output of pressurized cylinder, and the input of pressurized cylinder is connected with Hydraulic Station.
For the benefit of the utility model uses high-pressure medium as the security of Driven by Hydraulic Cylinder, also comprise the safety device for flexible pipe security protection, described safety device be safety guard, Pressure gauge, relief valve, one or more in the pressure sensor that is connected with Hydraulic Station.
Embodiment 3:
The utility model additionally provides a kind of using method of stretching-machine, the any one reactor pressure vessel kingbolt combined integrate stretching-machine structure that this stretching-machine provides for any one embodiment above-mentioned, described using method comprises the following steps that order is carried out:
1), adopt hanging device by draw unit one by one handling to pressure vessel top, complete the connection of screw thread on the connection of mother nut rotating mechanism and kingbolt upper cap nut and stretching nut rotating mechanism and kingbolt;
2) cable, is adopted to complete the electrical connection of each draw unit and Survey control cabinet and adopt flexible pipe to complete Hydraulic Station to be connected with the pressure medium conduit of each draw unit;
3), at Survey control set amount of tension parameter cashier's office in a shop, stretching nut rotating mechanism completes single according to amount of tension parameter and stretches, and the amount of tension that single stretches is not more than total amount of tension of requirement;
4), step 3) is repeated, until the elongation of the kingbolt that is stretched reaches total amount of tension.
In above step 3), be intended to open one stretching mode step by step, adopting stretches step by step not only can ensure that the tensile pressures on single kingbolt stablizes increase gently, can ensure that multiple kingbolt meets the requirement of amount of tension uniformity and uniformity simultaneously, as a kind of concrete scheme, can be set as that point three phases carries out, namely be respectively 1/3rd of final pressure (pressure that total amount of tension is corresponding), 2/3rds, final pressure, also can user's setting as required; Often completing a staged pressure retention time is that system to judge after pressure stability 1 minute automatically, also can user's setting, ensures that tensile pressures is stable and arrives setting value.
Embodiment 4:
The using method of the present embodiment to a kind of stretching-machine shown in embodiment 3 is further qualified, for the uniformity of each kingbolt extended length in further balanced multiple kingbolt simultaneously drawing process, be beneficial to the uniformity that the sealing effectiveness of the bolting face that kingbolt uses is stressed with each kingbolt, also set-up procedure is comprised between step 3) and step 4), described set-up procedure is: after draw unit executes the amount of tension numerical value of input, by finely tuning the actual pressure of hydraulic cylinder in each draw unit, the actual amount of tension of the kingbolt that each draw unit is corresponding is finely tuned.In the present embodiment, above hydraulic cylinder actual pressure fine setting can adopt and be realized the form of hydraulic cylinder pressure relief.
Above content is the further description done the utility model in conjunction with concrete preferred embodiment, can not assert that detailed description of the invention of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other embodiments drawn under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (5)
1. reactor pressure vessel kingbolt combined integrate stretching-machine structure, the Hydraulic Station comprising Survey control cabinet and be connected with Survey control cabinet, it is characterized in that, also comprise a more than draw unit, described draw unit includes hydraulic cylinder, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism, described stretching nut rotating mechanism is fixedly connected with hydraulic cylinder, the pressure medium input of hydraulic cylinder is connected with Hydraulic Station, mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are all electrically connected with Survey control cabinet, and mother nut rotating mechanism, stretching nut rotating mechanism and amount of tension measurement mechanism are connected by cable with Survey control cabinet, Hydraulic Station is connected by flexible pipe with hydraulic cylinder.
2. reactor pressure vessel kingbolt combined integrate stretching-machine structure according to claim 1, is characterized in that, described cable has at least on one end and is provided with aviation plug, and described flexible pipe has at least on one end and is provided with snap joint.
3. reactor pressure vessel kingbolt combined integrate stretching-machine structure according to claim 1, it is characterized in that, also comprise the stretching platform that more than and quantity are less than draw unit quantity, described stretching platform is rigid member, and each stretching platform all arranges at least one draw unit.
4. according to the reactor pressure vessel kingbolt combined integrate stretching-machine structure in claim described in 3, it is characterized in that, each stretching platform is provided with a pressurized cylinder, the cylinder pressure medium input of the draw unit on each stretching platform is all connected on the output of pressurized cylinder, and the input of pressurized cylinder is connected with Hydraulic Station.
5. reactor pressure vessel kingbolt combined integrate stretching-machine structure according to claim 1, it is characterized in that, also comprise the safety device for flexible pipe security protection, described safety device be safety guard, Pressure gauge, relief valve, one or more in the pressure sensor that is connected with Hydraulic Station.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520470041.7U CN204724669U (en) | 2015-07-03 | 2015-07-03 | Reactor pressure vessel kingbolt combined integrate stretching-machine structure |
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| CN201520470041.7U CN204724669U (en) | 2015-07-03 | 2015-07-03 | Reactor pressure vessel kingbolt combined integrate stretching-machine structure |
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| CN204724669U true CN204724669U (en) | 2015-10-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959441A (en) * | 2015-07-03 | 2015-10-07 | 成都海光核电技术服务有限公司 | Combined type integrated drawing machine of king bolt reactor pressure vessel and use method thereof |
-
2015
- 2015-07-03 CN CN201520470041.7U patent/CN204724669U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104959441A (en) * | 2015-07-03 | 2015-10-07 | 成都海光核电技术服务有限公司 | Combined type integrated drawing machine of king bolt reactor pressure vessel and use method thereof |
| WO2017005027A1 (en) * | 2015-07-03 | 2017-01-12 | 成都海光核电技术服务有限公司 | Combined-type integral tensioner for main bolt of reactor pressure vessel and method of use thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151028 Effective date of abandoning: 20170929 |