CN109000069A - A kind of combined type electric melting pipe fittings - Google Patents
A kind of combined type electric melting pipe fittings Download PDFInfo
- Publication number
- CN109000069A CN109000069A CN201810990291.1A CN201810990291A CN109000069A CN 109000069 A CN109000069 A CN 109000069A CN 201810990291 A CN201810990291 A CN 201810990291A CN 109000069 A CN109000069 A CN 109000069A
- Authority
- CN
- China
- Prior art keywords
- inner tube
- combined type
- type electric
- electric melting
- pipe fittings
- 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.)
- Pending
Links
- 238000002844 melting Methods 0.000 title claims abstract description 51
- 230000008018 melting Effects 0.000 title claims abstract description 51
- 229920003023 plastic Polymers 0.000 claims abstract description 25
- 239000004033 plastic Substances 0.000 claims abstract description 25
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 244000144985 peep Species 0.000 claims description 8
- 239000013013 elastic material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 description 23
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/02—Welded joints; Adhesive joints
- F16L47/03—Welded joints with an electrical resistance incorporated in the joint
Abstract
The present invention provides a kind of combined type electric melting pipe fittings, including the inner tube being made of plastics and the casing being set in the middle part of outside the inner tube, the interior pipe internal surface is equipped with internal layer resistance wire, the internal surface of casing or the inner tube outer surface are equipped with outer layer resistance wire, having between the inner tube and the casing allows the inner tube in internal layer resistance wire work, the gap for allowing the inner tube to be radially expanded.First inner tube and tubing are welded when use, inner tube is heated to generate certain radial deformation, reduced by the pressure for the plastics for allowing the gap expanded to make to melt, the axially flowing reduction of the plastics of melting.
Description
Technical field
The present invention relates to pipeline field, especially a kind of combined type electric melting pipe fittings.
Background technique
In recent years, plastic conduit has obtained more and more applications in combustion gas, water supply and draining field.With pipe technology
Development, the anti-pressure ability of pipeline is required higher and higher, while higher want also proposed to the connecting pipe between pipeline
It asks, it is desirable to which connection sealing can be good, and voltage endurance capability is bigger.
PPR material is widely used in hot-water pipeline system, the main spy of hot-water line due to its excellent heat resistance
Point is that tube wall thickness is thicker, generally relatively elaborate using common hot melt spigot-and-socket when bore is larger, and construction is inconvenient.Therefore PPR
Electric melting pipe fittings weld afterwards due to using first to assemble, and bellmouth internal diameter is big compared with tube outer diameter when installation, construct laborsaving light, gradually
It is widely applied.
After tubing design strength increase, electric melting pipe fittings wall thickness also thickeies therewith, due to leading for plastics especially PPR material
Hot property is poor, welding temperature is high, melt flow index is big, and in the thicker pipeline of welding wall thickness, inner layer material temperature is high, expands
Fastly, the deformation of inner layer material by material outside constraint, between plastics especially PPR after melting is between electric melting pipe fittings and tubing
In gap can along axial flowing, this flowing when being easy to make spiral resistance wire arrangement change, once it is short in the middle part of resistance wire
Road will lead to Resistant heating power and rise rapidly, and aggravate plastic melt, and heating power is more than the bearing value of material, spray
The welding qualities accident such as expect, smolder.
Summary of the invention
In order to overcome the above problem, the purpose of the present invention is to provide one kind to reduce molten plastic axial direction when welding tubing
The combined type electric melting pipe fittings of flowing.
In order to achieve the above-mentioned advantages, present invention offer combined type electric melting pipe fittings, including the inner tube being made of plastics and are set in this
The casing at the outer middle part of inner tube, the interior pipe internal surface are equipped with internal layer resistance wire, and the internal surface of casing or the inner tube outer surface are equipped with outer
Layer resistance wire, having between the inner tube and the casing allows the inner tube in internal layer resistance wire work, allows the inner tube radial
The gap of expansion.
In one embodiment of the present of invention, the outer peripheral surface of said inner tube end is equipped with the electricity connecting with the internal layer resistance wire
Pole, described sleeve pipe outer peripheral surface are equipped with the electrode connecting with the outer layer resistance wire.
In one embodiment of the present of invention, said inner tube and described sleeve pipe outer peripheral surface are respectively equipped with peep hole.
In one embodiment of the present of invention, there is gasket ring, the gasket ring and said inner tube between said inner tube and described sleeve pipe
And/or described sleeve pipe is connected and fixed.
In one embodiment of the present of invention, the gasket ring is arranged at the gap both ends.
In one embodiment of the present of invention, the gasket ring is made of elastic material.
In one embodiment of the present of invention, said inner tube or described sleeve pipe outer wall have multiple external grooves axially arranged.
In one embodiment of the present of invention, the section of the external groove is semicircle.
In one embodiment of the present of invention, said inner tube or described sleeve pipe have spiral inner groovy.
In one embodiment of the present of invention, said inner tube, described sleeve pipe, the plastic grain are made of PPR or PE.
In the present invention, first inner tube and tubing are welded when use, inner tube is heated to generate certain radial deformation, by permitting
Perhaps the gap expanded reduces the pressure of the plastics of melting, axially flowing is reduced the plastics of melting.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of the combined type electric melting pipe fittings of first embodiment of the invention.
Fig. 2 show the partial enlarged view at the combined type electric melting pipe fittings A of Fig. 1.
Fig. 3 show the cut-away illustration of the combined type electric melting pipe fittings of Fig. 1.
Fig. 4 show the structural schematic diagram of the combined type electric melting pipe fittings of second embodiment of the invention.
Fig. 5 show the cut-away illustration of the combined type electric melting pipe fittings of Fig. 4.
Fig. 6 show the structural schematic diagram of the combined type electric melting pipe fittings of third embodiment of the invention.
Fig. 7 show the partial enlarged view at the combined type electric melting pipe fittings B of Fig. 6.
Fig. 8 show the structural schematic diagram of the combined type electric melting pipe fittings of fourth embodiment of the invention.
Fig. 9 show the cut-away illustration of the combined type electric melting pipe fittings of Fig. 8.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to specific embodiment, structure, feature and its effect is proposed according to the present invention, detailed description is as follows.
Referring to Figure 1, Fig. 2, the combined type electric melting pipe fittings of the first embodiment of the present invention, including the inner tube being made of plastics
1 and it is set in the casing 2 at the outer middle part of the inner tube 1, which is equipped with internal layer resistance wire 11, the outer peripheral surface of 1 end of inner tube
Equipped with the interior pipe electrode 12 being connect with internal layer resistance wire 11.2 inner surface of casing is equipped with outer layer resistance wire 21,2 outer peripheral surface of casing
Equipped with the bushing electrode 22 being connect with outer layer resistance wire 21.
Having between the inner tube 1 and the casing 2 allows the inner tube 1 in the internal layer resistance wire 11 work, allows the inner tube 1
The gap a being radially expanded.In inner tube 1 during pipe fitting welding, 1 expanded by heating of inner tube, 1 outer wall of inner tube is in 2 inner surface of casing
Patch and.Casing 2 is for improving the intensity of inner tube 1 and guaranteeing the integral strength of the combined type electric melting pipe fittings.
Inner tube 1 and 2 outer peripheral surface of casing are respectively equipped with inner tube peep hole 13 and casing peep hole 23.Inner tube peep hole 13 and set
Pipe peep hole 23 is used to judge the quality whether welding is completed and welded.
There is gasket ring 3, which is connected and fixed with inner tube 1 and/or casing 2 between inner tube 1 and casing 2.Gasket ring 3 can be with
Guarantee that inner tube 1 is identical with the axes O of casing 2, guarantees that gap a is uniformly distributed.Gasket ring 3 is arranged at the gap both ends a and makes 1 He of inner tube
Gap a is kept between casing 2.Gasket ring 3 is also used to seal clearance a, prevents the outflow of molten plastic.Gasket ring 3 is by elastic material system
At.
Fig. 3 is referred to, inner tube 1 or 2 outer wall of casing have multiple external grooves 4 axially arranged.The section of external groove 4 is half
It is round.External groove 4 is used to increase the radial-deformation of inner tube 1 or casing 2.2 inner surface of cooling zone 14 or casing at 1 middle part of inner tube
With spiral inner groovy 5.The section of inner groovy 5 is semicircle.Inner groovy 5 is used to increase inner tube 1 or the radial of casing 2 becomes
Shape amount.Inner tube 1, casing 2, plastic grain are made of PPR or PE.
The construction process of the electric melting pipe fittings are as follows:
1, the depth of weld for being inserted into the inner tube 1 or welding section are measured and marked on tubing with marking pen, should be noted simultaneously
Tube end face is sectioned perpendicular to axes O.
2, before welding that the oxide layer of tubing welding section is fully erased.
3, tubing and the face of weld of the inner tube 1 must be clean, dry.
4, tubing welding ends is inserted into the interface of 1 two sides of inner tube respectively and is contained in the welding section of inner tube 1, the inner tube 1
It must be connect under stress-free conditions with tubing.
5, the plug of welding machine is electrically connected with interior pipe electrode 12, accurately input weld interval for being demarcated on the electric melting pipe fittings and
Cooling time.
6, after preparation is ready, welding machine can show welding parameter, after fully validated, then start welding machine and start to weld, weldering
Welding machine can prompt welding procedure to terminate after connecing, and judge whether welding is completed finally by observation inner tube peep hole 13.
7, after having welded inner tube 1, then by 22 soldering sleeve 2 of bushing electrode and inner tube 1, observation casing peep hole 23 judges
Whether welding is completed.(welding process compares step 5 and step 6)
In inner tube 1 and the welding process of tubing, inner tube 1 is welded and fixed with tubing, while inner tube 1 and tubing melted by heat
The partial melting plastics of formation along the path that inner groovy 5 is formed to flowing in the middle part of inner tube 1, thus including reducing the plastics of melting
Pressure in pipe 1 reduces influence of the axial flowing of the plastics of melting to internal layer resistance wire 11.The radial deformation of part inner tube 1
The external groove 4 through 1 outer wall of inner tube is measured to disperse.At this time 1 outer wall of inner tube in 2 inner surface of casing patch and.
In inner tube 1 and the welding process of casing 2, inner tube 1 is welded and fixed with casing 2, and inner tube 1 and casing 2 are welded into
One entirety guarantees the intensity of electric melting pipe fittings.
Refer to Fig. 4, Fig. 5, in the second embodiment of the present invention, the cooling zone 14 of inner tube 1 has along 1 inner surface of inner tube
Circumferentially distributed inner groovy 5, the section of inner groovy 5 are semicircle.
In the thermal histories of the combined type electric melting pipe fittings, inner tube 1 and pipe fitting are respectively melted into molten condition, redundance
The plastics of melting flow in inner groovy 5, make the radial deformation for reducing inner tube 1.
The present embodiment has spiral inner groovy 5 compared to the inner tube 1 of first embodiment, by along inner tube 1 inner surface week
To the inner groovy 5 of distribution, avoid the plastics of melting because path it is single caused by block the case where generation, make the plastics of melting
It is uniformly distributed in inner groovy 5, to possess better welding effect.
Refer to Fig. 6, Fig. 7, in the third embodiment of the present invention, gasket ring 3 is detachably connected with inner tube 1 and casing 2.Inner tube
1 outer wall has the annular notch of accommodating portion gasket ring 3, and gasket ring 3 has limiting section 31 corresponding with annular notch, limiting section 31
Including the confined planes 311 perpendicular to axes O and to the inclined guide surface 312 of casing 2.Confined planes 311 are for limiting gasket ring 3 backwards
2 direction of casing is mobile.Guide surface 312 is for being set in 1 outer wall of inner tube when assembling convenient for gasket ring 3.
During the combined type electric melting pipe fittings are installed, the preferential gasket ring 3 for installing side, then casing 2 is installed, finally install
The gasket ring 3 of the other side.It is moved axially since limiting section 31 limits gasket ring 3, to realize fixed sleeving 2 and make casing 2 and inner tube 1
Keep gap a.
The present embodiment is connected and fixed compared to the gasket ring 3 of first embodiment with inner tube 1 and/or casing 2, by detachably connecting
The gasket ring 3 connect makes the combined type electric melting pipe fittings that can have better control in the machining accuracy to single component, in the combined type
Electric melting pipe fittings are convenient to overhaul when breaking down and replace, and save maintenance cost.
Refer to Fig. 8, Fig. 9, in the fourth embodiment of the present invention, which is equipped with outer layer resistance wire 21, casing 2
Outer peripheral surface is equipped with the bushing electrode 22 connecting with outer layer resistance wire 21.1 outer wall of inner tube does not have external groove 4.
Since outer layer resistance wire 21 and internal layer resistance wire 11 are located at the outer wall and inner surface of inner tube 1, processing
In the process, the wiring for outer layer resistance wire 21 and internal layer resistance wire 11 is more concentrated, compared to the separated cloth of first embodiment
The combined type electric melting pipe fittings of the process of line, the present embodiment have saved processing cost.
In the present invention, the wall thickness of inner tube 1 and casing 2 with gap a therewith, inner tube 1 and casing 2 all than relatively thin,
Inner tube 1 and tubing is first used to weld when use, inner tube 1 is heated to generate certain radial deformation, and the pressure of the plastics of melting subtracts
Small, axially flowing is reduced the plastics of melting, and inner tube 1 and casing 2 are hereafter welded into an entirety again and guarantee the strong of electric melting pipe fittings
Degree.
In the present invention, there is gasket ring 3 between said inner tube 1 and described sleeve pipe 2, it is ensured that inner tube 1 and casing 2
Axes O is identical, guarantees that gap a is uniformly distributed.
In the present invention, 1 outer wall of said inner tube has multiple inner groovies 5 axially arranged, increases inner tube 1 outer wall week
It is long, increase the radial-deformation of inner tube 1.
In the present invention, said inner tube 1 has spiral inner groovy 5, the modeling that inner groovy 5 can be melted with accommodating portion
Material, on the other hand can guide the molten plastic axially flowed, move along the hand of spiral, reduce the shadow to internal layer resistance wire 11
It rings, reduces axial flowing.
More than, it is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, although this
Invention has been disclosed in a preferred embodiment above, and however, it is not intended to limit the invention, any person skilled in the art,
It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent
The equivalent embodiment of variation, but without departing from the technical solutions of the present invention, according to the technical essence of the invention to the above reality
Any simple modification, equivalent variations and modification made by example are applied, all of which are still within the scope of the technical scheme of the invention.
Claims (10)
1. a kind of combined type electric melting pipe fittings, which is characterized in that including the inner tube being made of plastics and be set in middle part outside the inner tube
Casing, which is equipped with internal layer resistance wire, and the internal surface of casing or the inner tube outer surface are equipped with outer layer resistance wire, should
Having between inner tube and the casing allows the inner tube in internal layer resistance wire work, the gap for allowing the inner tube to be radially expanded.
2. combined type electric melting pipe fittings according to claim 1, which is characterized in that the outer peripheral surface of said inner tube end be equipped with
The electrode of the internal layer resistance wire connection, described sleeve pipe outer peripheral surface are equipped with the electrode connecting with the outer layer resistance wire.
3. combined type electric melting pipe fittings according to claim 1, which is characterized in that said inner tube and described sleeve pipe outer peripheral surface point
It She You not peep hole.
4. combined type electric melting pipe fittings according to claim 1, which is characterized in that have between said inner tube and described sleeve pipe
Gasket ring, the gasket ring are connected and fixed with said inner tube and/or described sleeve pipe.
5. combined type electric melting pipe fittings according to claim 4, which is characterized in that the gasket ring is arranged in the gap two
End.
6. combined type electric melting pipe fittings according to claim 4, which is characterized in that the gasket ring is made of elastic material.
7. combined type electric melting pipe fittings according to claim 5, which is characterized in that said inner tube or described sleeve pipe outer wall have
Multiple external grooves axially arranged.
8. combined type electric melting pipe fittings according to claim 7, which is characterized in that the section of the external groove is semicircle.
9. combined type electric melting pipe fittings according to claim 7, which is characterized in that said inner tube or described sleeve pipe have spiral
The inner groovy of shape.
10. combined type electric melting pipe fittings according to claim 8, which is characterized in that said inner tube, described sleeve pipe, the modeling
Material particle is made of PPR or PE.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990291.1A CN109000069A (en) | 2018-08-28 | 2018-08-28 | A kind of combined type electric melting pipe fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810990291.1A CN109000069A (en) | 2018-08-28 | 2018-08-28 | A kind of combined type electric melting pipe fittings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109000069A true CN109000069A (en) | 2018-12-14 |
Family
ID=64594307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810990291.1A Pending CN109000069A (en) | 2018-08-28 | 2018-08-28 | A kind of combined type electric melting pipe fittings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109000069A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379918A (en) * | 2020-03-18 | 2020-07-07 | 高友华 | Electric melting connecting pipe fitting |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4555834A (en) * | 1982-02-11 | 1985-12-03 | Wolfgang Sichler | Connector fitting with an electrical heating wire |
| BE1005527A3 (en) * | 1991-11-19 | 1993-09-28 | Draka Polva Bv | Electric weldable coupling to connect tubes made of thermoplastic material |
| US5255943A (en) * | 1992-02-08 | 1993-10-26 | Georg Fischer Rohrleitungssysteme Ag | Welding sleeve and method for its manufacture |
| JPH10318456A (en) * | 1997-05-15 | 1998-12-04 | Mitsubishi Plastics Ind Ltd | Give-and-take exchange joint |
| JP2008267434A (en) * | 2007-04-17 | 2008-11-06 | Hitachi Metals Ltd | Electrically fused joint |
| CN202402867U (en) * | 2011-11-30 | 2012-08-29 | 广东联塑科技实业有限公司 | Electric smelting sleeve and plastic composite pipe with steel framework |
| CN103403432A (en) * | 2011-02-25 | 2013-11-20 | 孔瑟尔普拉斯特公司 | Fusion welding socket |
| CN103481510A (en) * | 2012-06-08 | 2014-01-01 | 乔治费希尔韦文股份公司 | Ribbed electric welding sleeve |
| CN106481925A (en) * | 2016-11-17 | 2017-03-08 | 华创天元实业发展有限责任公司 | A kind of plastic spiral electric melting sleeve for connecting helical structure plastic conduit |
| US20170113401A1 (en) * | 2015-10-27 | 2017-04-27 | Georg Fischer Rohrleitungssysteme Ag | Chamber coupler |
| CN209084264U (en) * | 2018-08-28 | 2019-07-09 | 浙江伟星新型建材股份有限公司 | A kind of combined type electric melting pipe fittings |
-
2018
- 2018-08-28 CN CN201810990291.1A patent/CN109000069A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4555834A (en) * | 1982-02-11 | 1985-12-03 | Wolfgang Sichler | Connector fitting with an electrical heating wire |
| BE1005527A3 (en) * | 1991-11-19 | 1993-09-28 | Draka Polva Bv | Electric weldable coupling to connect tubes made of thermoplastic material |
| US5255943A (en) * | 1992-02-08 | 1993-10-26 | Georg Fischer Rohrleitungssysteme Ag | Welding sleeve and method for its manufacture |
| JPH10318456A (en) * | 1997-05-15 | 1998-12-04 | Mitsubishi Plastics Ind Ltd | Give-and-take exchange joint |
| JP2008267434A (en) * | 2007-04-17 | 2008-11-06 | Hitachi Metals Ltd | Electrically fused joint |
| CN103403432A (en) * | 2011-02-25 | 2013-11-20 | 孔瑟尔普拉斯特公司 | Fusion welding socket |
| CN202402867U (en) * | 2011-11-30 | 2012-08-29 | 广东联塑科技实业有限公司 | Electric smelting sleeve and plastic composite pipe with steel framework |
| CN103481510A (en) * | 2012-06-08 | 2014-01-01 | 乔治费希尔韦文股份公司 | Ribbed electric welding sleeve |
| US20170113401A1 (en) * | 2015-10-27 | 2017-04-27 | Georg Fischer Rohrleitungssysteme Ag | Chamber coupler |
| CN106481925A (en) * | 2016-11-17 | 2017-03-08 | 华创天元实业发展有限责任公司 | A kind of plastic spiral electric melting sleeve for connecting helical structure plastic conduit |
| CN209084264U (en) * | 2018-08-28 | 2019-07-09 | 浙江伟星新型建材股份有限公司 | A kind of combined type electric melting pipe fittings |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111379918A (en) * | 2020-03-18 | 2020-07-07 | 高友华 | Electric melting connecting pipe fitting |
| CN111379918B (en) * | 2020-03-18 | 2020-11-24 | 江苏芬茂新材料科技有限公司 | Electric melting connecting pipe fitting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW201341700A (en) | Steam generator heating tube repair means and repair method | |
| CN209084264U (en) | A kind of combined type electric melting pipe fittings | |
| CN109262117B (en) | High-efficient refrigerated lockhole effect TIG deep penetration welding welder | |
| CN102906526B (en) | Flue gas air preheater, and a method for installation, as well as air pipe component for flue gas air preheater | |
| CN109000069A (en) | A kind of combined type electric melting pipe fittings | |
| CN1715757B (en) | Glow plug | |
| CN208742326U (en) | A kind of fluid mixing apparatus | |
| EP4130537A1 (en) | Pipeline connection structure, compressor assembly, and air conditioner | |
| CN208139881U (en) | A kind of bushing type fluid mixing apparatus | |
| KR101837909B1 (en) | Structure and method of pipe joint for dispensing fluid | |
| KR200497089Y1 (en) | liquid storage device | |
| CN209026377U (en) | Electric melting pipe fittings are routed after a kind of segmented | |
| CN216555651U (en) | Novel instant heating faucet | |
| CN108006328B (en) | Manufacturing process of inner circle full-corrosion-proof pipe fitting | |
| CN204807219U (en) | Wear -resisting sensor of removable formula | |
| CN109827019A (en) | A kind of polyethylene fused pipe considering resistance wire wiring area length | |
| CN214466882U (en) | Explosion-proof flexible pipe | |
| CN210687432U (en) | High-temperature expansion joint with closed anti-coking structure | |
| CN208169709U (en) | A kind of cannula structure that can reduce the temperature difference | |
| CN101608725A (en) | A kind of connecting means of steel-plastic composite pipe | |
| CN212559940U (en) | Water drum structure of batch feeder | |
| CN204004583U (en) | faucet assembly | |
| CN112622287B (en) | Electric smelting bypass saddle-shaped pipe fitting welding thermal deformation regulation and control method | |
| CN109128475B (en) | Welding structure and welding method of water cooling system | |
| CN209511393U (en) | A kind of electric melting pipe fittings with temperature feedback arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191106 Address after: 317000 No. 6 Qianjiang South Road, Dayang Street, Linhai City, Taizhou City, Zhejiang Province Applicant after: Linhai Weixing New Building Materials Co., Ltd. Address before: 317000 Taizhou Economic Development Zone, Zhejiang Applicant before: Zhejiang Weixing New Building Materials Co., Ltd. |