CN219930254U - Sealed sacrificial anode for water heater - Google Patents
Sealed sacrificial anode for water heater Download PDFInfo
- Publication number
- CN219930254U CN219930254U CN202320899436.3U CN202320899436U CN219930254U CN 219930254 U CN219930254 U CN 219930254U CN 202320899436 U CN202320899436 U CN 202320899436U CN 219930254 U CN219930254 U CN 219930254U
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- CN
- China
- Prior art keywords
- anode
- sealing
- rod
- screw cap
- sealed
- 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.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 64
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 21
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims description 21
- 238000005260 corrosion Methods 0.000 abstract description 14
- 230000007797 corrosion Effects 0.000 abstract description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 11
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 239000011777 magnesium Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229920001973 fluoroelastomer Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 2
- 229910001425 magnesium ion Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model discloses a sealed sacrificial anode for a water heater, which relates to the technical field of accessories of electric water heaters and comprises an anode rod, a steel core, an anode screw cap and a sealed thermoplastic pipe, wherein the sealed thermoplastic pipe is positioned between the anode rod and the anode screw cap, the anode rod is in threaded connection with the anode screw cap, the anode rod comprises a rod body and a connecting body, the sealed thermoplastic pipe is sleeved on the outer side surface of the lower half part of the connecting body and the outer side surface of the upper half part of the rod body, a sealing groove is formed in one end, close to the rod body, of the anode screw cap, and a first sealing piece is arranged in the sealing groove. According to the utility model, the sealing thermoplastic pipe is arranged between the anode screw cap and the anode rod, so that the sealing gap between the anode screw cap and the anode rod is reduced, and the first sealing piece in the sealing groove is used for reducing the water or water vapor in the water heater from entering the gap between the anode screw cap and the anode rod, so that double sealing is performed, and the corrosion aggravation of the anode rod caused by the gap corrosion is effectively slowed down.
Description
Technical Field
The utility model relates to the technical field of fittings of electric water heaters, in particular to a sealing sacrificial anode for a water heater.
Background
The sacrificial anode is an important part of the water heater, is generally a long metal rod made of magnesium or aluminum, extends into the water tank, and has the main functions of corrosion prevention, protection of the water heater liner and prolonging of the service life of the liner.
In the inner container of the water heater, the anode (taking magnesium anode as an example) and the inner container (carbon steel as a main component) are contacted with water at the same time, magnesium element is more active than iron element and is more easily magnesium ion (Mg2+), the magnesium element preferentially reacts with alkaline substances in the water, and the magnesium anode can continuously consume the magnesium anode, so that the aim of protecting the inner container and a heating pipe is fulfilled.
In the service process of the anode, extra loss is generated, and the main reason for the phenomenon is that the gap corrosion is generated between the magnesium rod and the anode screw cap, so that the corrosion speed of the magnesium rod is increased, the magnesium rod and the anode screw cap are connected by adopting threads, partial gaps exist between the meshed threads, so that the gap corrosion is formed (namely, the gap corrosion is that a metal part is in a medium, and a medium in the gap is in a stagnation state due to the fact that a particularly small gap is formed between the metal part and the metal part or the metal part and the non-metal part, so that the accelerated corrosion of the metal in the gap is caused), wherein the corrosion speed of the magnesium rod near the anode screw cap is faster and more serious than that of the part (namely, the corrosion-prone area) far away from the anode screw cap, and in addition, hot water or steam entering the gap also erodes the welding spots of the top surface of the anode screw cap and the anode steel core, so that the conditions of open welding, water leakage and the like appear, and the service life of the anode is greatly reduced.
Disclosure of Invention
The utility model aims to provide a sealed sacrificial anode for a water heater, which solves the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a sealed sacrificial anode for a water heater comprises an anode rod, a steel core, an anode screw cap and a sealed thermoplastic pipe;
the sealing thermoplastic pipe is positioned between the anode rod and the anode screw cap, the anode rod is in threaded connection with the anode screw cap, the anode rod comprises a rod body and a connecting body, the sealing thermoplastic pipe is sleeved on the outer side surface of the lower half part of the connecting body and the outer side surface of the upper half part of the rod body, a sealing groove is formed in one end, close to the rod body, of the anode screw cap, and a first sealing piece for sealing is arranged in the sealing groove;
the anode screw cap sequentially comprises a cap body, a sealing flange and a hexagonal bolt head from bottom to top, and a second sealing piece for sealing is sleeved at one end, close to the sealing flange, of the cap body.
Preferably, the first sealing member is an inner sealing ring, and the second sealing member is an outer sealing ring.
Preferably, the connector is fixedly connected to the top of the rod body, and a first external thread is formed on the connector.
Preferably, a welding hole is formed in the inner cavity of the anode nut, an inner thread is formed in the side wall of the inner cavity, a second outer thread is formed in the outer side wall of the inner cavity, and the inner thread is meshed with the first outer thread.
Preferably, the anode rod and the anode nut are both provided with first through holes, the steel core is positioned in the first through holes, the top of the steel core is a welding end, and the welding end is welded in the welding holes.
Preferably, the sealed thermoplastic tube is a PE tube.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model relates to a sealed sacrificial anode for a water heater, which reduces a sealing gap between an anode nut and an anode rod through a sealed thermoplastic pipe arranged between the anode nut and the anode rod, reduces the entry of water or vapor in the water heater into the gap between the anode nut and the anode rod through a first sealing piece in a sealing groove, performs double sealing, effectively slows down the aggravation of the corrosion of the anode rod caused by the gap corrosion, effectively avoids the cracking and water leakage of welding spots caused by the hot vapor corrosion, and prolongs the service life of the anode.
Drawings
FIG. 1 is a schematic diagram of a sacrificial anode structure in the prior art;
FIG. 2 is a schematic perspective view of a sacrificial anode according to the present utility model;
FIG. 3 is a plan cross-sectional view of a sacrificial anode of the present utility model;
FIG. 4 is a schematic illustration of the envelope of a sealed thermoplastic tube in accordance with the present utility model;
FIG. 5 is a schematic view of an anode nut according to the present utility model.
In the figure: 1. an anode rod; 101. a rod body; 102. a connecting body; 103. a first external thread; 2. a steel core; 201. a welding end; 3. an anode screw cap; 301. a cap body; 302. a sealing flange; 303. a hexagonal bolt head; 304. welding holes; 305. an internal thread; 306. a second external thread; 307. sealing grooves; 4. sealing the thermoplastic tube; 5. an inner seal ring; 6. an outer seal ring; 7. welding spots; 8. slit corrosion; 9. areas susceptible to corrosion.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, in the description of the present utility model, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, it should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale, e.g., the thickness or width of some layers may be exaggerated relative to other layers for ease of description.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined or illustrated in one figure, no further detailed discussion or description thereof will be necessary in the following description of the figures.
As shown in fig. 2-3, the present utility model provides a technical solution: a sealed sacrificial anode for a water heater comprises an anode rod 1, a steel core 2 and a sealed thermoplastic pipe 4, wherein the sealed thermoplastic pipe 4 is a PE pipe;
the positive pole nut 3 has been screwed to positive pole stick 1 top, sealed thermoplastic pipe 4 is located between positive pole stick 1 and positive pole nut 3, positive pole stick 1 includes body 101 and connector 102, connector 102 fixed connection is at body 101 top, first external screw thread 103 has been seted up on the connector 102, as shown in fig. 4, sealed thermoplastic pipe 4 cover is established at the lateral surface of the latter half of connector 102 and the lateral surface of the latter half of body 101, sealed thermoplastic pipe 4 through setting up between positive pole nut 3 and positive pole stick 1, seal, reduce the gap between positive pole nut 3 and the positive pole stick 1, effectively alleviate the positive pole stick 1 corruption aggravation that causes because of gap corruption 8, seal groove 307 has been seted up to the one end that positive pole nut 3 is close to body 101, seal groove 307 is inside to be provided with the first sealing member that is used for sealing, set up through seal groove 307 and first sealing member and to carrying out the secondary seal between positive pole nut 3 and the positive pole stick 1, further slow down the positive pole stick 1 corruption that causes because of gap corruption 8, the life of positive pole has been improved.
As shown in fig. 5, the anode screw cap 3 sequentially comprises a cap body 301, a sealing flange 302 and a hexagonal bolt head 303 from bottom to top, one end, close to the sealing flange 302, of the cap body 301 is sleeved with a second sealing piece for sealing, and the water leakage problem at the joint of the anode screw cap 3 and the water heater pipe joint can be solved by the arrangement of the second sealing piece, so that the service life of the anode can be prolonged. Preferably, the first sealing element is an inner sealing ring 5, the second sealing element is an outer sealing ring 6, and the outer sealing ring 6 is arranged at the root of a sealing flange 302 of the anode screw cap 3 and is used for sealing between a water heater pipe joint and the anode screw cap 3; optionally, the inner seal ring 5 is a gasket. The inner sealing ring 5 and the outer sealing ring 6 are made of fluororubber or silicon rubber, the fluororubber has excellent performances of strong corrosion medium resistance, strong oxidant resistance and good electrical insulation performance, and the silicon rubber is heat-resistant and cold-resistant and has good insulation performance, so that the cost performance of the adopted silicone rubber or fluororubber material is higher.
Further, a welding hole 304 is formed in the inner cavity of the anode nut 3, an internal thread 305 is formed on the side wall of the inner cavity, a second external thread 306 is formed on the outer side wall, and the internal thread 305 is meshed with the first external thread 103.
As a specific embodiment, the anode rod 1 and the anode nut 3 are provided with first through holes, the steel core 2 is positioned in the first through holes, the top of the steel core 2 is provided with a welding end 201, and the welding end 201 is welded in the welding hole 304 to form the welding spot 7.
The anode rod 1 is made of magnesium metal, the steel core 2 is coated in a first through hole formed in the center of the anode rod 1 and the anode screw cap 3, and the welding end 201 of the connector 102 is exposed to a section for welding with the anode screw cap 3.
When the anode screw cap 3 is assembled with the anode rod 1: placing the inner seal ring 5 in the seal groove 307; the anode nut 3 is screwed onto the connecting body 102 of the anode rod 1, so that the inner seal ring 5 is in a compressed state. Meanwhile, in the process of screwing the first external thread 103 and the second external thread 103, the sealing thermoplastic pipe 4 coated on the outer side of the first external thread 103 of the connector 102 is filled in the gap between the first external thread 103 and the internal thread 305 in the process of meshing the first external thread 103 and the internal thread 305.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A sealed sacrificial anode for a water heater, characterized by: comprises an anode rod (1), a steel core (2), an anode screw cap (3) and a sealing thermoplastic pipe (4);
the sealing thermoplastic pipe (4) is located between the anode rod (1) and the anode screw cap (3), the anode rod (1) is in threaded connection with the anode screw cap (3), the anode rod (1) comprises a rod body (101) and a connecting body (102), the sealing thermoplastic pipe (4) is sleeved on the outer side face of the lower half part of the connecting body (102) and the outer side face of the upper half part of the rod body (101), a sealing groove (307) is formed in one end, close to the rod body (101), of the anode screw cap (3), and a first sealing piece for sealing is arranged inside the sealing groove (307);
the anode screw cap (3) sequentially comprises a cap body (301), a sealing flange (302) and a hexagonal bolt head (303) from bottom to top, and a second sealing piece for sealing is sleeved at one end, close to the sealing flange (302), of the cap body (301).
2. A sealed sacrificial anode for a water heater according to claim 1, wherein: the first sealing element is an inner sealing ring (5), and the second sealing element is an outer sealing ring (6).
3. A sealed sacrificial anode for a water heater according to claim 1, wherein: the connecting body (102) is fixedly connected to the top of the rod body (101), and a first external thread (103) is formed on the connecting body (102).
4. A sealed sacrificial anode for a water heater according to claim 3, wherein: welding holes (304) are formed in the inner cavity of the anode screw cap (3), inner threads (305) are formed in the side wall of the inner cavity, second outer threads (306) are formed in the outer side wall of the inner cavity, and the inner threads (305) are meshed with the first outer threads (103).
5. A sealed sacrificial anode for a water heater according to claim 4, wherein: the anode rod (1) and the anode nut (3) are internally provided with first through holes, the steel core (2) is positioned in the first through holes, the top of the steel core (2) is a welding end (201), and the welding end (201) is welded in the welding hole (304).
6. A sealed sacrificial anode for a water heater according to claim 1, wherein: the sealing thermoplastic pipe (4) is a PE pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320899436.3U CN219930254U (en) | 2023-04-20 | 2023-04-20 | Sealed sacrificial anode for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320899436.3U CN219930254U (en) | 2023-04-20 | 2023-04-20 | Sealed sacrificial anode for water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219930254U true CN219930254U (en) | 2023-10-31 |
Family
ID=88491909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320899436.3U Active CN219930254U (en) | 2023-04-20 | 2023-04-20 | Sealed sacrificial anode for water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219930254U (en) |
-
2023
- 2023-04-20 CN CN202320899436.3U patent/CN219930254U/en active Active
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