CN207298198U - It is a kind of to cross ball expansion joint with rifling - Google Patents
It is a kind of to cross ball expansion joint with rifling Download PDFInfo
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- CN207298198U CN207298198U CN201721026132.7U CN201721026132U CN207298198U CN 207298198 U CN207298198 U CN 207298198U CN 201721026132 U CN201721026132 U CN 201721026132U CN 207298198 U CN207298198 U CN 207298198U
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- rifling
- expansion joint
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Abstract
It is a kind of to cross ball expansion joint with rifling, including import end pipe, guide shell, port of export tube assembly, port of export tube assembly is made of the outlet A and outlet B being connected, the internal diameter of the import end pipe, guide shell and outlet B is in the same size, successively import end pipe, guide shell to outlet B inner wall on open up rifling.Special circumstances for high temperature gas cooled reactor medium for helium and fuel sphere, solve the problems, such as the fuel sphere card resistance at fuel sphere conveyance conduit bellows expansion joint, ensure that fuel sphere can pass through.
Description
Technical field
The utility model belongs to Bellows Technology application field, can be applied to high temperature gas cooled reactor fuel handling system and crosses bulb
The a kind of of line crosses ball expansion joint with rifling.
Background technology
Huaneng Group Shandong Shidao Bay nuclear power plant HTGR Nuclear Power Plant demonstration project（HTR-PM）, be by Tsinghua University from
That is built in main design, the technical foundation for 10 MW High Temperature Gas-cooled Test Reactors built and runed has China's independent intellectual property right
200,000 kilowatts of HTGR Nuclear Power Plant demonstration projects, be Chinese First high temperature gas cooled reactor commercialization Demonstration Station.The engineering
National medium ＆ long term sci-tech development program was included in 2 months 2006（2006-2020）One of 16 national science and technology key special subjects, be
China builds a landmark project of innovation-oriented country.Fuel handling system is that its economy is influenced in HTGR Nuclear Power Plant
And it is related to one of critical system of nuclear reactor safety.
The thermal walking of fuel handling system fuel sphere conveyance conduit need to be compensated using bellows expansion joint, because by inside
The limitation of fuel sphere conveying（Internal diameter of the pipeline is slightly larger than fuel sphere outside diameter, about 2mm）, can pass through and reduce for guarantee fuel sphere
The collision loss of fuel sphere and tube wall, expansion joint internal diameter must be consistent with internal diameter of the pipeline, as shown in Figure 1.In such cases, ripple
Internal diameter is bigger than internal diameter of the pipeline at pipe, causes pipeline local volume to become larger, and the gas pressure intensity of push fuel sphere movement declines in pipeline,
So that thrust gas reduces, cause fuel sphere not smooth in the position movement for having expansion joint, particularly pipeline deflecting position, or even meeting
There is sphere and be detained situation, it is difficult to meet the smooth requirement for crossing ball, economy and security are had some impact on.
Utility model content
In order to solve the above technical problems, the utility model offer is a kind of to cross ball expansion joint with rifling, for high temperature gas-cooled
Heap medium is the special circumstances of helium and fuel sphere, solves fuel sphere card resistance of the fuel sphere conveyance conduit at bellows expansion joint
Problem, ensures that fuel sphere can pass through.
To realize above-mentioned technical purpose, used technical solution is：It is a kind of to cross ball expansion joint, including import with rifling
End pipe, guide shell, port of export tube assembly, port of export tube assembly are made of the outlet A and outlet B being connected, outlet A's
Internal diameter size is slightly larger than the internal diameter size of outlet B, one end connection of import end pipe and guide shell, the other end socket joint of guide shell
In inlet/outlet pipe A, guide shell rises according to the contracting of expansion joint realizes axial displacement in outlet A, between guide shell and outlet A
Equipped with radial clearance, the internal diameter of the import end pipe, guide shell and outlet B is in the same size, successively in import end pipe, water conservancy diversion
Rifling is opened up on cylinder to the inner wall of outlet B.Rifling described in the utility model runs through expansion joint inner surface, and every rifling is continuous
Without mismatch.
Axis between the outlet B and the junction of outlet A and the nozzle of guide shell described in the utility model
It is more than the axial displacement 1-2mm of guide shell to gap.
The nozzle of guide shell described in the utility model opens up multiple elongated slot gap vertically, on the inner wall of outlet A
Corresponding elongated slot gap is equipped with axial boss, and multiple axial boss insertions are corresponded in elongated slot gap, the bottom surface of axial boss and water conservancy diversion
The inner wall of cylinder is concordant, and axial boss moveable distance in elongated slot gap is greater than or equal to the axial displacement of guide shell.
The bottom surface of axial boss described in the utility model is cambered surface, the cambered surface radius and guide shell of axial boss（2）'s
Internal diameter is in the same size.
The utility model beneficial effect is：The utility model uses the technical side in uniform internal diameter expansion joint inner wall increasing rifling
Case, raises speed fuel sphere by the spiral air flow that rifling groove is formed using high-speed gas, and is transported by increasing its spin
The dynamic stability for keeping movement, so as to effectively solve at fuel handling system fuel sphere conveyance conduit bellows expansion joint
Fuel sphere card resistance problem, ensures that fuel sphere can pass through.
Brief description of the drawings
Fig. 1 often crosses ball expansion joint structural map with uniform internal diameter；
Fig. 2 is that the uniform internal diameter of the utility model inner wall belt rifling crosses ball expansion joint structural map；
Fig. 3 is end pipe cross-sectional view of the utility model with rifling；
Fig. 4 is the utility model guide shell and outlet A assembling schematic diagrams；
Fig. 5 is the structure diagram that the utility model bend pipe pressure balance type crosses ball expansion joint；
In figure：1st, import end pipe, 2, guide shell, 2-1, elongated slot gap, 3, limiting plate, 4, bellows, 5, outlet end pipe group
Part, 5-1, outlet A, 5-2, outlet B, 5-3, axial boss, 6, middle adapter, 7, outer tube, 8, outlet support end ring, A, speed-raising
Area, B, reduction of speed area, C, speed stabilizing area, 9, work bellows, 10, operating wave outlet end ring, 11, shipment nut, 12, elbow, 13, big
Pull rod, 14, balance wave import end ring, 15, ball, taper faced washer, 16, balance bellows, 17, spacing ring, 18, closure assemblies, 19,
Rifling.
Embodiment
It is a kind of to cross ball bellows expansion joint with rifling, see Fig. 2, the expansion joint includes bellows, adapter, water conservancy diversion
Main member contained by other conventional expansion joints such as cylinder, the main distinction are：
（1）The requirement of expansion joint internal diameter is consistent, it is impossible to expanding or undergauge occurs；
（2）Expansion joint is made of in the component of expansion joint inner wall import end pipe 1, guide shell 2, port of export tube assembly 5 etc.
Rifling is added on surface.Rifling cross section pattern is as shown in Figure 3.It is recessed in rifling when high-speed gas are by expansion joint inner wall in pipeline
Spiral air flow is formed in groove, drives fuel sphere to accelerate and produce rotary motion, fuel sphere kinetic stability is improved, promotes fuel sphere
Stabilization passes through expansion joint at a high speed（The depressor area produced by internal diameter of the pipeline increase）, avoid card resistance situation from occurring.
（3）Card resistance situation is occurred without to ensure that fuel sphere passes through expansion joint, expansion joint can be divided into 3 areas when designing
Domain, as shown in Fig. 2, speed-raising area, reduction of speed area and speed stabilizing area.Fuel sphere first passes through 1 rifling area of import end pipe and accelerates in advance（Speed-raising
Area）, speed reaches design predetermined value, while the spinning campaign for increasing fuel sphere avoids fuel sphere from transporting to keep stable movement
Vibration occurs when dynamic to collide with pipe；Because pipeline space becomes larger, gas pressure intensity reduces by 4 part of swelling red sandstone, belongs to pressure drop
Area, thrust gas reduce, fuel sphere by when speed reduce, by expected design, treat that fuel sphere drops to normal value by speed
When pass right through pressure drop area, immediately into speed stabilizing area, pass through the remainder of port of export tube assembly 5.Into the fuel in speed stabilizing area
Other position fuel sphere speed of ball speed and pipeline are suitable, avoid because excessive other position fuel spheres with pipeline of speed touch
Hit.To realize above-mentioned design effect（The area's fuel sphere speed designs value that raises speed and speed stabilizing area speed designs value）, need to count in design
The parameter of calculation includes the length L of import end pipe 11With the length L of port of export tube assembly 52（It is main to influence fuel sphere acceleration region length
Degree）, rifling quantity（3 ~ 12 generally are taken, is mainly determined by caliber, air pressure and gas flow rate）, rifling depth, twine angle, twine away from
Deng.
（4）To reduce the pressure drop degree of swelling red sandstone part, reduction enters bellows chamber portion gas, guide shell
Axial gap △ between 2 and outlet B5-2 is slightly larger than axial displacement（1 ~ 2mm or so）, ensure axial gap under working status
Basic fitting；In addition guide shell 2 is designed to bell and spigot frame with outlet A5-1 laps, as shown in figure 4, guide shell is vertically
Opening up elongated slot gap 2-1, axial boss 5-3 is reserved in part overlapping with guide shell 2 outlet A5-1, and when assembling intersects,
The gas into 4 bellows sections can be further reduced under working status, plays the effect for reducing pressure drop degree.
As shown in Fig. 2, the uniform internal diameter of inner wall belt rifling crosses ball expansion joint, including import end pipe 1, guide shell 2, outlet end pipe
Component 5, is arranged with the bellows being in series outside port of export tube assembly, bellows by end ring and outer tube 7, bellows 4 with it is outer
Dielectric space is formed between pipe, port of export tube assembly 5 is made of the outlet A5-1 and outlet B5-2 being connected, outlet
The internal diameter size of A5-1 is slightly larger than the internal diameter size of outlet B5-2（1-2mm）, import end pipe 1 is connected with one end of guide shell 2,
Import end pipe 1 is integrally formed with guide shell, and in the other end socket joint inlet/outlet pipe A5-1 of guide shell 2, guide shell 2 is according to expansion
The contracting of section is risen realizes axial displacement in outlet A5-1, and radial clearance is equipped between guide shell 2 and outlet A5-1, described
Import end pipe 1, guide shell 2 and the internal diameter of outlet B5-2 are in the same size, because internal diameter is in the same size, guide shell 2 and outlet A5-
Have between 1 and be used for medium outflow small gap, can flow into dielectric space realization from the gap dielectric presses bellows, successively
Import end pipe 1, guide shell 2 to outlet B5-2 inner wall on open up rifling 19, which opens up from 1 mouth of pipe of import end pipe
To outlet B5-2 pipe tails, using it is same twine angle and twine away from.
As shown in figure 5, Fig. 5 is the Application Example that the bend pipe pressure balance type with rifling crosses ball expansion joint.Such as Fig. 5 institutes
Show, work bellows 9 and balance bellows 16 are designed as outer laminated structure, and operating wave is exported the peace of end ring 9 by big pull rod 13
The ripple import end ring 14 that weighs is connected, and absorbs the pressure thrust of expansion joint, reduces the stress of piping fixing bracket and associated devices；
To ensure passing through for graphite fuel ball, guide shell 2 is process with import end ring 1 using overall bar, internal diameter and shell ring
Internal diameter is identical.Radius of curvature maximum position is avoided on elbow 12, designs the intercommunicating pore of some φ 3, is uniformly distributed in close to adapter
The position of inner wall, avoids that the fuel sphere passed through is caused to damage, and prevents blocking of the larger graphite particle to stomata.At zero
Part general assembly group is to preceding, import end pipe 1,12 inwall processing rifling of guide shell 2, port of export tube assembly and elbow, rifling parameter（Rifling
Quantity, rifling depth, twine away from twine angle etc.）It is determined according to expansion joint operating mode.During general assembly welding, import end pipe is controlled
1st, 12 orientation of guide shell 2, port of export tube assembly and elbow, prevents from misplacing, and ensures that inner wall rifling relative position can be formed completely
Rifling.
Under working status, expansion joint internal high-pressure gas promotes fuel sphere to move to elbow end from 1 input end pipe end, because of work
Make 9 bore of bellows it is larger and use outer laminated structure, this position internal diameter of the pipeline is big compared with other positions, causes gas pressure to decline,
Fuel sphere promotion is powerless, easily forms card resistance or accumulation at this position, is unfavorable for passing through for fuel sphere.By adding expansion joint
Inner wall rifling, when high-speed gas are by expansion joint inner wall in pipeline, forms spiral air flow in rifling groove, drives fuel sphere to add
Speed simultaneously produces rotary motion, and promoting fuel sphere, stabilization passes through expansion joint at a high speed, avoids card resistance situation from occurring.
Axial gap between the nozzle and inlet tube B of guide shell 2 is more than the axial displacement 1-2mm of guide shell 2.
As shown in figure 4, the nozzle of guide shell 2 opens up multiple elongated slot gap 2-1 vertically, multiple elongated slot gap 2-1 edges are led
2 circumferentially distributed setting of flow cartridge, elongated slot gap 2-1 is corresponded on the inner wall of outlet A5-1 and is equipped with axial boss 5-3, multiple axial directions
In the corresponding elongated slot gap 2-1 of boss 5-3 insertions, the width of the width and elongated slot gap 2-1 of axial boss 5-3 matches, axial
The bottom surface of boss 5-3 is concordant with the inner wall of guide shell 2, axial boss 5-3 moveable distances in elongated slot gap 2-1 be more than or
Equal to the axial displacement of guide shell 2, optimal situation is axial boss 5-3 moveable distance and axial direction in elongated slot gap 2-1
Gap △ is equal.
The bottom surface of axial boss 5-3 is cambered surface, and the cambered surface radius and the internal diameter of guide shell 2 of axial boss 5-3 is in the same size,
Ensure the substantially flat of 2 inner wall of guide shell.
Claims (4)
1. a kind of cross ball expansion joint, including import end pipe with rifling（1）, guide shell（2）, port of export tube assembly（5）, the port of export
Tube assembly（5）By the outlet A being connected（5-1）With outlet B（5-2）Composition, outlet A（5-1）Internal diameter size it is bigger
In outlet B（5-2）Internal diameter size, import end pipe（1）With guide shell（2）One end connection, guide shell（2）The other end hold
It is inserted into outlet A（5-1）It is interior, guide shell（2）Risen according to the contracting of expansion joint in outlet A（5-1）Inside realize axial displacement, water conservancy diversion
Cylinder（2）With outlet A（5-1）Between be equipped with radial clearance, it is characterised in that：The import end pipe（1）, guide shell（2）With
Outlet B（5-2）Internal diameter it is in the same size, successively in import end pipe（1）, guide shell（2）To outlet B（5-2）Inner wall on
Open up rifling（19）.
2. a kind of as claimed in claim 1 cross ball expansion joint with rifling, it is characterised in that：The outlet B（5-2）With
Outlet A（5-1）Junction and guide shell（2）Nozzle between axial gap be more than guide shell（2）Axial displacement 1-
2mm。
3. a kind of as claimed in claim 1 cross ball expansion joint with rifling, it is characterised in that：The guide shell（2）Cylinder
Opening's edge axially opens up multiple elongated slot gap（2-1）, in outlet A（5-1）Inner wall on correspond to elongated slot gap（2-1）Equipped with axial direction
Boss（5-3）, multiple axial boss（5-3）The corresponding elongated slot gap of insertion（2-1）It is interior, axial boss（5-3）Bottom surface and water conservancy diversion
Cylinder（2）Inner wall it is concordant, axial boss（5-3）In elongated slot gap（2-1）Interior moveable distance is greater than or equal to guide shell（2）
Axial displacement.
4. a kind of as claimed in claim 3 cross ball expansion joint with rifling, it is characterised in that：The axial boss（5-3）
Bottom surface be cambered surface, axial boss（5-3）Cambered surface radius and guide shell（2）Internal diameter it is in the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721026132.7U CN207298198U (en) | 2017-08-16 | 2017-08-16 | It is a kind of to cross ball expansion joint with rifling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721026132.7U CN207298198U (en) | 2017-08-16 | 2017-08-16 | It is a kind of to cross ball expansion joint with rifling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207298198U true CN207298198U (en) | 2018-05-01 |
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ID=62444355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721026132.7U Active CN207298198U (en) | 2017-08-16 | 2017-08-16 | It is a kind of to cross ball expansion joint with rifling |
Country Status (1)
| Country | Link |
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| CN (1) | CN207298198U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606371A (en) * | 2017-08-16 | 2018-01-19 | 洛阳双瑞特种装备有限公司 | It is a kind of to cross ball expansion joint with rifling |
-
2017
- 2017-08-16 CN CN201721026132.7U patent/CN207298198U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606371A (en) * | 2017-08-16 | 2018-01-19 | 洛阳双瑞特种装备有限公司 | It is a kind of to cross ball expansion joint with rifling |
| CN107606371B (en) * | 2017-08-16 | 2020-07-28 | 洛阳双瑞特种装备有限公司 | Ball-passing expansion joint with rifling |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: No.88, Binhe North Road, hi tech Zone, Luoyang City, Henan Province Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |