CN203363448U - EPR nuclear power hose - Google Patents
EPR nuclear power hose Download PDFInfo
- Publication number
- CN203363448U CN203363448U CN 201320366405 CN201320366405U CN203363448U CN 203363448 U CN203363448 U CN 203363448U CN 201320366405 CN201320366405 CN 201320366405 CN 201320366405 U CN201320366405 U CN 201320366405U CN 203363448 U CN203363448 U CN 203363448U
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- nuclear power
- hose
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Abstract
The utility model relates to an EPR nuclear power hose and belongs to the technical field of connecting hoses of conveying pipelines. The EPR nuclear power hose is mainly applied to nuclear islands of a nuclear power plant on the basis of the third-generation EPR technology. The EPR nuclear power hose structurally comprises a metal corrugated pipe and a netted sleeve wrapping the metal corrugated pipe. The end of the metal corrugated pipe is connected with one end of a seamless connecting pipe in a butt welding mode, the other end of the seamless connecting pipe is connected with seamless pipe fitting in a welding mode, and the end of the netted sleeve is fixed to the outer circle of the seamless connecting pipe through a snap ring in a fastening mode. According to the EPR nuclear power hose, due to the adoption of a three-dimensional space elbow designing scheme, the requirement for three-dimensional space installation of the hose is met, the on-site pipeline assembling procedure in the nuclear power plant is eliminated, abnormal forced hose installation is avoided, hose installation quality is guaranteed, and therefore service life is guaranteed.
Description
Technical field
The utility model relates to a kind of EPR nuclear flexible pipe, and especially a kind of metallic hose be flexible coupling for three generations's nuclear power EPR technology nuclear island essential service water system, belong to delivery line hose connector technical field.
Background technique
Between nuclear island of nuclear power station equipment pipe and pipeline, between the air ports and pipeline of some active equipment, between non-active equipment and mobile device and pipeline, as ventilator, air-treatment unit, aircondition and similar devices etc., all need to utilize flexible pipe that it is linked up.At present, this type of flexible pipe mostly is external import, is mainly metal bellows and compiles the wire sets structure outward, and joint is that flange or rapid pipe joint welding form.Because this field is high to the sealing requirements of flexible pipe, and require to guarantee that 10 years internal and outernal leakage rates of flexible pipe are 0, because the seepage of any position of flexible pipe all can affect the normal operation of whole system, and surrounding environment and personal safety are constituted a threat to, but prior art is difficult to meet above-mentioned requirements.
The model utility content
The purpose of this utility model is: for the above strict demand to metallic hose, propose the EPR nuclear flexible pipe of a kind of good corrosion resistance and long service life, thereby meet the requirement of current nuclear power field to metallic hose.
In order to reach above purpose, the utility model provides a kind of EPR nuclear flexible pipe, comprise metal bellows and be coated on the outer net of described metal bellows, the termination of described metal bellows is connected with an end butt welding of seamless pipe, the other end and the seamless pipe of described seamless pipe are welded to connect, and the termination of described net is fixed on the cylindrical of described seamless pipe by the snap ring banding.
The utility model is due to the austenitic stainless steel material of having taked highly corrosion resistant, improved weld procedure specification, carried out relevant welding procedure qualification, the authentication of the authentication of welder's qualification, nondestructive testing personnel qualification, product meets highly corrosion resistant, long-life, high safe, highly reliable requirement, and meets the requirement of three generations EPR nuclear power technology.
The utility model further limits technological scheme, aforesaid EPR nuclear flexible pipe, and described seamless pipe is seamless elbow, seamless straight tube or end-fitting.
Aforesaid EPR nuclear flexible pipe, described end-fitting is the lap joint flange joint.
Aforesaid EPR nuclear flexible pipe, described end-fitting is inipple.
Aforesaid EPR nuclear flexible pipe, adopt butt welding or fillet welding to be connected between described seamless pipe and seamless pipe.
Reliable in order to guarantee welding, the welding endss such as joint, flange are strictly controlled process, and different welding parts are carried out to corresponding welding procedure qualification, guarantee that the weld seam of joint and bellows main body must be without any weld defects; Weld seam between body and joint should carry out VT visual examination, PT Liquid Penetrant and the inspection of RT radiographic inspection according to standard-required.
Further, aforesaid EPR nuclear flexible pipe, an end of described seamless pipe and metal bellows welding has the expansion limit of outwards digging.
Because the utility model has been taked between internal layer bellows and seamless pipe and the butt welding linkage structure of seamless pipe and middle seamless elbow or seamless straight tube end construction etc., different welding parts are carried out to corresponding welding procedure qualification, welded reliability and welding quality have been significantly improved, guaranteed the sealability of flexible pipe, thereby guaranteed use safety, extended working life.
The utility model is by three dimensional space bend pipe design proposal, realize the three dimensional space installation requirement of flexible pipe, reduced the equipped operation of the on-the-spot pipeline of nuclear power station, avoided the improper phenomenon of installing by force of flexible pipe, guarantee the installation quality of flexible pipe, thereby guaranteed working life.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
The structural representation that Fig. 1 is the utility model embodiment one.
The plan view that Fig. 2 is Fig. 1.
The structural representation that Fig. 3 is the utility model embodiment two.
The plan view that Fig. 4 is Fig. 3.
Embodiment
Embodiment one
The EPR nuclear flexible pipe that is suitable for EPR nuclear power station conveying flowing medium pipeline that the present embodiment provides, structure as depicted in figs. 1 and 2, internal layer is metal bellows 1, outer Stainless Steel Wire net 2, the termination of metal bellows 2 is connected with an end butt welding of seamless pipe 4, the other end of seamless pipe 4 and seamless elbow 5 one ends are welded to connect, the other end of seamless elbow 5 is connected with end flange joint 8 by seamless straight tube 6, and on the end flange joint, the lap joint flange 7 matched with it is set; The termination of Stainless Steel Wire net 2 is fixed on the cylindrical of seamless pipe 4 by snap ring 3 bandings.
Embodiment two
As shown in Figure 3 and Figure 4, basic structure is identical with embodiment one for the structure of the present embodiment.In order to adapt to frequent handling, wherein the other end of seamless pipe 4 is connected with 9 butt welding of end thread joint, and in figure, 9A, 9B are the rapid pipe joint matched with inipple 9, thereby forms the rapid pipe joint connecting hose.
Facts have proved, the metallic hose of above-mentioned the present embodiment has that intensity is high, corrosion-resistant, good airproof performance, the advantage that the life-span is long; The high-quality corrugated stainless steel tubing of internal layer, good corrosion resistance; Outer field Stainless Steel Wire net has guaranteed load performance; Joint weld process guarantees welding quality, with existing various metallic hoses, compares, and has outstanding feature.
In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (6)
1. an EPR nuclear flexible pipe, comprise metal bellows and be coated on the outer net of described metal bellows, it is characterized in that: the termination of described metal bellows is connected with an end butt welding of seamless pipe, the other end and the seamless pipe of described seamless pipe are welded to connect, and the termination of described net is fixed on the cylindrical of described seamless pipe by the snap ring banding.
2. EPR nuclear flexible pipe according to claim 1, it is characterized in that: described seamless pipe is seamless elbow, seamless straight tube or end-fitting.
3. EPR nuclear flexible pipe according to claim 2, it is characterized in that: described end-fitting is the lap joint flange joint.
4. EPR nuclear flexible pipe according to claim 2, it is characterized in that: described end-fitting is inipple.
5. EPR nuclear flexible pipe according to claim 1 is characterized in that: between described seamless pipe and seamless pipe, adopt butt welding or fillet welding to be connected.
6. according to the described EPR nuclear flexible pipe of the arbitrary claim of claim 1-5, it is characterized in that: an end of described seamless pipe and metal bellows welding has the expansion limit of outwards digging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320366405 CN203363448U (en) | 2013-06-24 | 2013-06-24 | EPR nuclear power hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320366405 CN203363448U (en) | 2013-06-24 | 2013-06-24 | EPR nuclear power hose |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203363448U true CN203363448U (en) | 2013-12-25 |
Family
ID=49811208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320366405 Expired - Lifetime CN203363448U (en) | 2013-06-24 | 2013-06-24 | EPR nuclear power hose |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203363448U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240640A (en) * | 2015-10-19 | 2016-01-13 | 航天晨光股份有限公司 | Control rod drive wire displacement compensation device, forming mold and forming method of control rod drive wire displacement compensation device |
| CN107575677A (en) * | 2017-08-28 | 2018-01-12 | 无锡市永兴金属软管有限公司 | A kind of metal hose that can quickly connect |
| CN110005895A (en) * | 2019-04-04 | 2019-07-12 | 中国核电工程有限公司 | Reducing elbow and the pipe arrangement connection method for utilizing reducing elbow |
-
2013
- 2013-06-24 CN CN 201320366405 patent/CN203363448U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105240640A (en) * | 2015-10-19 | 2016-01-13 | 航天晨光股份有限公司 | Control rod drive wire displacement compensation device, forming mold and forming method of control rod drive wire displacement compensation device |
| CN105240640B (en) * | 2015-10-19 | 2017-11-03 | 航天晨光股份有限公司 | A kind of Control rod drive line displacement compensation device, shaping dies and its manufacturing process |
| CN107575677A (en) * | 2017-08-28 | 2018-01-12 | 无锡市永兴金属软管有限公司 | A kind of metal hose that can quickly connect |
| CN110005895A (en) * | 2019-04-04 | 2019-07-12 | 中国核电工程有限公司 | Reducing elbow and the pipe arrangement connection method for utilizing reducing elbow |
| CN110005895B (en) * | 2019-04-04 | 2021-08-10 | 中国核电工程有限公司 | Reducing elbow and pipeline arrangement and connection method using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131225 |