CN201359163Y - Fiber-enhanced PP-R pipe joint for water heater - Google Patents
Fiber-enhanced PP-R pipe joint for water heater Download PDFInfo
- Publication number
- CN201359163Y CN201359163Y CNU2009200684922U CN200920068492U CN201359163Y CN 201359163 Y CN201359163 Y CN 201359163Y CN U2009200684922 U CNU2009200684922 U CN U2009200684922U CN 200920068492 U CN200920068492 U CN 200920068492U CN 201359163 Y CN201359163 Y CN 201359163Y
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- CN
- China
- Prior art keywords
- water heater
- pipe joint
- fiber
- metal insert
- enhanced
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a fiber-enhanced PP-R pipe joint for a water heater. The fiber-enhanced PP-R pipe joint comprises a movable connection nut (1), wherein the upper end of the movable connection nut (1) is connected with an external-threaded metal joint at the inlet or the outlet of the water heater; the lower end of the movable connection nut (1) is connected with the upper end of a metal insert (2); the metal insert (2) has a hollow circular structure and is provided with round steps (11) outside the upper end thereof for preventing regression of the movable connection nut, a multi-edge chamfer outside the middle part (10) and an anti-skid unit on the root part (9); and the root part of the metal insert (2) and the fiber-enhanced PP-R injection body (3) adopt a injection molding structure. The fiber-enhanced PP-R joint has the advantages that the joint can improve the connection efficiency and lower the quality accident resulting from deformation due to thermal expansion, wherein the thermal exposition coefficient of the fiber-enhanced PP-R composite material is only 1/5 that of PP-R resin.
Description
Technical field
The utility model relates to the pipe joint that a kind of water heater is used, and relates in particular to the structure of this pipe joint.
Background technique
Being connected of water heater and thermoplastic pipe in the prior art, generally adopt following structure:
Structure one: the water heater entery and delivery port is connected with the thermoplastic pipe earlier with after metal tube (metallic hose, hard tube) is connected again.
Structure two: the water heater entery and delivery port is connected with the thermoplastic pipe earlier with after water heater is connected with the PP-R pipe joint again.
Carry out water heater with metal tube and be connected,, bring hidden danger to installation quality, the engineering cost height because installation is complicated, accessory is many with thermoplastic pipe's transition; With water heater PP-R pipe joint and thermoplastic pipe's welding, because the thermoplastic material of PP-R pipe joint is the PP-R resin, the thermal expansion coefficient of PP-R resin big (1.5 * 10
-4M/m.k), water heater water-exit temperature height easily causes the PP-R resin thermal expansion distortion of PP-R pipe joint, causes the metal insert and the delamination of PP-R resin-bonded of PP-R pipe joint or comes off, and seepy question occurs.For improving the Security of quality of connection and use, be necessary the material and the structure of pipe joint are designed.
Summary of the invention
The utility model technical issues that need to address have provided a kind of water heater with fiber reinforcement PP-R pipe joint, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: a upper end connects the flexible connection nut of the metal nipple of advancing of water heater or water outlet; Flexibly connecting the lower end of nut and the upper end of metal insert joins; Described metal insert is interior round hollow, in the upper end arranged outside stop the step cutting pattern that flexibly connects nut and withdraw from, polygon chamfering arranged and anti-skidding structure is arranged at root in the outside, middle part; The root of metal insert and fiber reinforcement PP-R injection molding body are the structure of molding and forming.
Compared with prior art, the beneficial effects of the utility model are: the metal insert bellmouth is connected with the metal nipple of the entery and delivery port of water heater by coupling nut, and packing ring can improve both sealings; The hot melt interface of fiber reinforcement PP-R injection molding body directly is connected with thermoplastic pipe's hot melt; Both improve joint efficiency, reduced the Accident due to quality that causes because of thermal expansion (thermal expansion coefficient of fiber reinforcement PP-R composite material only be PP-R resin 1/5) distortion again.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 flexibly connects the nut sectional drawing among Fig. 1;
Fig. 3 is a metal insert sectional drawing among Fig. 1;
Fig. 4 is fiber reinforcement PP-R injection molding body (a leading directly to) sectional drawing among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
By Fig. 1～Fig. 4 as seen: the utility model comprises: a upper end connects the flexible connection nut 1 of the metal nipple of advancing of water heater or water outlet; Flexibly connecting the lower end of nut 1 and the upper end of metal insert 2 joins; Described metal insert 2 is interior round hollow, in the upper end arranged outside stop the step cutting pattern 11 that flexibly connects nut and withdraw from, polygon chamfering arranged and anti-skidding structure is arranged at root 9 in the outside, middle part 10; The root of metal insert 2 and fiber reinforcement PP-R injection molding body 3 are the structure of molding and forming;
Described flexible connection nut 1 is the polygonal metal nut of internal thread;
In described flexible connection nut, also comprise a packing ring 12; The cylindrical of packing ring 12 is not more than the interior circle of metal insert 2 greater than step cutting pattern 11, interior circle.
Described fiber reinforcement PP-R injection molding body 3 is straight-through or elbow or threeway.
The utility model adopts the fiber reinforcement PP-R performance of composites of prior art should meet the CJ/T258-2007 standard-required.
Flexible connection nut in the utility model is to be connected with the metal parts of water heater entery and delivery port for the bellmouth with metal insert.
Packing ring in the utility model is in order to strengthen the sealing that metal insert is connected with the water heater entery and delivery port.
Metal insert top circular step in the utility model is in order to prevent to flexibly connect withdrawing from of nut, to increase the tightness that connects.
An interface of the present utility model is to flexibly connect nut to be connected with the metal nipple of water heater entery and delivery port, and what be provided with in all the other interfaces is connected with thermoplastic pipe's hot melt with the interface of thermoplastic pipe's welding.
In the utility model the fiber reinforcement PP-R composite material of injection molding body be in order to ensure the resistance to high temperature of pipe joint and with thermoplastic pipe's welding, also solve simultaneously the big shortcoming of thermal expansion coefficient of ordinary hot plastic resin (PP-R), guaranteed the safe in utilization of product.
Claims (4)
1. a water heater is with fiber reinforcement PP-R pipe joint, and comprising: a upper end connects the flexible connection nut (1) of the metal nipple of advancing of water heater or water outlet; It is characterized in that: flexibly connect the lower end of nut (1) and the upper end of metal insert (2) and join; Described metal insert (2) is interior round hollow, in the upper end arranged outside stop the step cutting pattern (11) that flexibly connects nut and withdraw from, polygon chamfering arranged and anti-skidding structure is arranged at root (9) in the outside, middle part (10); The root of metal insert (2) and fiber reinforcement PP-R injection molding body (3) are the structure of molding and forming.
2. water heater according to claim 1 fiber reinforcement PP-R pipe joint, it is characterized in that: described flexible connection nut (1) is the polygonal metal nut of internal thread.
3. water heater according to claim 1 is characterized in that: also comprise a packing ring (12) in described flexible connection nut with fiber reinforcement PP-R pipe joint; The cylindrical of packing ring (12) is not more than the interior circle of metal insert (2) greater than step cutting pattern (11), interior circle.
4. water heater according to claim 1 fiber reinforcement PP-R pipe joint is characterized in that: described fiber reinforcement PP-R injection molding body (3) is straight-through or elbow or threeway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200684922U CN201359163Y (en) | 2009-03-06 | 2009-03-06 | Fiber-enhanced PP-R pipe joint for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200684922U CN201359163Y (en) | 2009-03-06 | 2009-03-06 | Fiber-enhanced PP-R pipe joint for water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201359163Y true CN201359163Y (en) | 2009-12-09 |
Family
ID=41424927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200684922U Expired - Fee Related CN201359163Y (en) | 2009-03-06 | 2009-03-06 | Fiber-enhanced PP-R pipe joint for water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201359163Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723924A (en) * | 2018-10-16 | 2019-05-07 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | A kind of carbon fiber elbow and its manufacturing method for ship |
-
2009
- 2009-03-06 CN CNU2009200684922U patent/CN201359163Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723924A (en) * | 2018-10-16 | 2019-05-07 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | A kind of carbon fiber elbow and its manufacturing method for ship |
| CN109723924B (en) * | 2018-10-16 | 2022-03-15 | 上海船舶工艺研究所(中国船舶工业集团公司第十一研究所) | Carbon fiber elbow for ship and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20180306 |