CN208348766U - A kind of high-strength nuclear power polyethylene electric-melting elbow - Google Patents

A kind of high-strength nuclear power polyethylene electric-melting elbow Download PDF

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Publication number
CN208348766U
CN208348766U CN201820497176.6U CN201820497176U CN208348766U CN 208348766 U CN208348766 U CN 208348766U CN 201820497176 U CN201820497176 U CN 201820497176U CN 208348766 U CN208348766 U CN 208348766U
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China
Prior art keywords
melting
nuclear power
electric
electric smelting
bend pipe
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CN201820497176.6U
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Chinese (zh)
Inventor
张秀丽
冯建
康萏
魏作友
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Shanghai Nachuan Nuclear New Material Technology Co Ltd
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Shanghai Nachuan Nuclear New Material Technology Co Ltd
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Abstract

The utility model is a kind of high-strength nuclear power polyethylene electric-melting bend pipe tools.Its specific constructive form mainly includes following part: electric smelting elbow main body (1), melting zone (2), resistance wire (3), electrode terminal (4), electrode hole (5), peep hole (6), positive stop lug boss (7).The electric smelting elbow main body (1) includes both ends flat segments and centre in 90 ° of curved bend pipeline sections, electric smelting elbow main body (1) both ends flat segments are equipped with melting zone (2), melting zone (2) inner wall is laid with resistance wire (3), resistance wire (3) both ends are connected with electrode terminal (4), and electrode terminal (4) is used and is embedded in electrode hole (5).The utility model high-strength nuclear power is used to be machined out injection molding pipe part with polyethylene electric-melting elbow and be formed with rear wiring technique.This electric smelting bend design is curved at big arc, its anti-seismic performance can be improved in unstressed centrostigma;Flat appearance is convenient for non-destructive testing;Melting zone area increased, greatly improved weld strength and safety, can be widely applied to nuclear power plant's water system field.

Description

A kind of high-strength nuclear power polyethylene electric-melting elbow
Technical field
The utility model relates to electric melting pipe fittings field more particularly to a kind of high-strength nuclear power polyethylene electric-melting swan necks Part.
Background technique
The excellent corrosion resistance of polyethylene pipe and radiation-resistant property make it become the replacement original carbon steel pipe of nuclear power plant With the ideal product of line plastic-steel tube.Since the installation space of nuclear power station is relatively limited, the side of polyethylene conduit system electric smelting connection Formula is very universal.But since safety and stability requirement of the nuclear power station to polyethylene conduit system is very higher, even taking The welding personnel for obtaining corresponding qualification completes welding by the welding procedure after procedure qualification, and every one of weld seam also has to pass through nothing Damage detection, it is ensured that inside welding point without cavity, be mingled with and the defects of stomata after can pass through.
Most electric smelting bend pipe tools molds covers the current mark in injection moulding process using dermatoglyph at present, although appearance is good It sees, but finds rough and uneven in surface whole dermatoglyph for the interference of lossless device with high accuracy probe very after test of many times is verified Greatly, it is difficult to implement precisely detection.And since mold developing and cost of material are realized, most electric smelting bend pipe tools use right angle Curved, not only through-current capability is bad, and is very easy to stress and concentrates.
Therefore a kind of welding quality safety and the convenient and fast polyethylene electric-melting swan neck of non-destructive testing are provided according to actual needs Part very it is necessary to.
Utility model content
To solve the above problems, the utility model provides a kind of high-strength nuclear power polyethylene electric-melting bend pipe tools.
The technical solution of the utility model is:
A kind of high-strength nuclear power polyethylene electric-melting bend pipe tools, mainly include electric smelting elbow main body (1), melting zone (2), Resistance wire (3), electrode terminal (4), electrode hole (5), peep hole (6), positive stop lug boss (7).Electric smelting elbow main body (1) packet Including both ends flat segments and intermediate in 90 ° of curved bend pipeline sections, electric smelting elbow main body (1) both ends flat segments are equipped with melting zone (2), It is equipped in melting zone (2) resistance wire (3), resistance wire (3) both ends are connected with electrode terminal (4), electrode terminal (4) It is embedded in electrode hole (5).The high-strength nuclear power first uses the bend pipe tools of injection molding with polyethylene electric-melting bend pipe tools Main body, electric smelting elbow body outer diameter are 273.05mm, wall thickness 39.1mm.Then using lathe preparatory processing to outer diameter 270.0mm, Internal diameter 212.0mm.The semi-finished product of appearance and size qualification are placed on routing machine, the fine turning of internal diameter is carried out, processes The positive stop lug boss of 1.5mm height shown in Fig. 1.Drilling machine machined electrode hole and peep hole are utilized after the completion of turning, is then routed, Copper wire implantation depth 0.5mm, screw pitch 2.8mm, copper wire circle number 24 enclose.Last pressed electrode terminal, allows resistance wire both ends and electricity Pole binding post is connected.
This programme compared with prior art the advantages of be:
1. electric smelting bend pipe tools are designed into, big arc is curved, and through-current capability is good, unstressed centrostigma, while it can be improved in pipe Anti-seismic performance in road system.
2. embedded electrode hole is arranged in electric smelting bend pipe tools, more preferably binding post can be protected to avoid when carrying, store and installing Damage.
3. electric smelting bend pipe tools are formed using rear wiring technique, pipe fitting outer wall is smooth, conducive to the implementation of non-destructive testing;
4. the molding of electric smelting bend pipe tools uses multiple precision turning, pipe fitting internal diameter ovality very little, conducive to proposing The concentricity of high tubing welding process, the cold welding incidence of less electric smelting connection procedure;
5. increasing the zone length of electric smelting bend pipe tools according to the particular/special requirement of nuclear power station, the intensity of welding is improved And safety, it can be widely applied to nuclear power plant's water system etc. and need high-intensitive desired field.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
1. being 273.05mm, the electric smelting elbow main body of wall thickness 39.1mm first with injection molding machine production outer diameter.
2. the electric smelting elbow main body of size qualification mills cast gate residual position with lathe.
3. then utilizing lathe and the preliminary turnery processing of special fixture to outer diameter 270.0mm, internal diameter 212.0mm.
4. the electric smelting elbow main body after turning is placed on routing machine, the fine turning of internal diameter is carried out, is processed The positive stop lug boss of 1.5mm height.
5. the electric smelting elbow main body of completion of processing is utilized drilling machine and special fixture, two electrode holes and two observations are processed Hole.Electrode hole upper end diameter 10.0mm, lower end diameter 6.0mm, peep hole is apart from electric smelting elbow main body inner wall 2-3mm.
6. resistance wire to be routed to depth 0.5mm with routing machine, the technique of screw pitch 2.8mm is implanted into pipe fitting inner wall.
7. last pressed electrode terminal, allows resistance wire both ends to be connected with electrode terminal, resistance value is measured, is checked whether Meet technique requirement, the molding of electric smelting bend pipe tools.
8. above-mentioned technical proposal is a kind of embodiment of the utility model, for those skilled in the art Speech, on the basis of the utility model discloses application method and principle, it is easy to various types of improvement or deformation are made, and It is not limited only to structure described in the above-mentioned specific embodiment of the utility model, therefore previously described mode is only preferably, And not restrictive meaning.

Claims (9)

1. a kind of high-strength nuclear power polyethylene electric-melting bend pipe tools mainly include electric smelting elbow main body (1), melting zone (2), electricity It hinders silk (3), electrode terminal (4), electrode hole (5), peep hole (6), positive stop lug boss (7), the electric smelting elbow main body (1) includes Both ends flat segments and centre are in 90 ° of curved bend pipeline sections, it is characterised in that: electric smelting elbow main body (1) both ends flat segments are equipped with Melting zone (2) is equipped with resistance wire (3) in melting zone (2), and resistance wire (3) both ends are connected with electrode terminal (4), electrode Binding post (4) is placed in electrode hole (5) using inline mode.
2. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: electric smelting elbow master Body (1) is to wait outer diameters tube body, including both ends flat segments and centre are in 90 ° of curved bend pipeline sections, outer diameter 270mm, curved bend Pipeline section wall thickness 25.54mm, flat segments be equipped with 1.5mm positive stop lug boss (7), flat segments internal diameter 219.08mm, using injection molding and Machine post forming.
3. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: melting zone (2) Length is 67.2mm, and cloth coil number is 24 circles, and screw pitch 2.8mm is routed depth 0.5mm.
4. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: the resistance wire It (3) is plain conductor, meter resistance is 0.018 Ω/m, and string diameter is
5. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: the electrode connects Terminal (4) uses the copper connecting terminal of 8*4mm, and one end is connected with the resistance wire (3), its other end and electro-fusion welding when welding Machine electrode is connected.
6. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: the electrode hole (5) be it is machining, be embedded in inside the flat segments of electric smelting elbow main body (1) both ends, electrode hole upper end diameter be 10.0mm, under End diameter is 6.0mm.
7. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: the peep hole (6) perforation is arranged on the flat segments outer wall of electric smelting elbow main body (1) both ends, and one end is connected with the melting zone (2), another End is in communication with the outside, and the jack-up material of hole surface is observed when welding, helps to be assisted with the method welding quality estimated Identification.
8. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: curved bend pipeline section Have positive stop lug boss (7) with the design of flat segments inner wall junction, positive stop lug boss (7) is highly 1.5mm, and positive stop lug boss (7) is to slotting Enter pipe fitting to play the role of positioning, prevents insertion pipe fitting too long, form cold welding.
9. high-strength nuclear power according to claim 1 polyethylene electric-melting bend pipe tools, it is characterised in that: the electric smelting Elbow material is high density polyethylene (HDPE), and solution flow rate is 4-20g/10min (190 DEG C/21.6kg).
CN201820497176.6U 2018-04-08 2018-04-08 A kind of high-strength nuclear power polyethylene electric-melting elbow Active CN208348766U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820497176.6U CN208348766U (en) 2018-04-08 2018-04-08 A kind of high-strength nuclear power polyethylene electric-melting elbow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820497176.6U CN208348766U (en) 2018-04-08 2018-04-08 A kind of high-strength nuclear power polyethylene electric-melting elbow

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CN208348766U true CN208348766U (en) 2019-01-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115183079A (en) * 2022-05-18 2022-10-14 浙江大学 Fiber reinforced plastic electric melting pipe fitting with mechanical property and electrical property independently regulated and controlled

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115183079A (en) * 2022-05-18 2022-10-14 浙江大学 Fiber reinforced plastic electric melting pipe fitting with mechanical property and electrical property independently regulated and controlled
CN115183079B (en) * 2022-05-18 2024-02-09 浙江大学 Fiber reinforced plastic electrofusion pipe fitting with mechanical property and electric property independently regulated and controlled

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