CN108981174B - Pressure-bearing solar water heater water tank with anti-corrosion liner and processing method - Google Patents
Pressure-bearing solar water heater water tank with anti-corrosion liner and processing method Download PDFInfo
- Publication number
- CN108981174B CN108981174B CN201811128416.6A CN201811128416A CN108981174B CN 108981174 B CN108981174 B CN 108981174B CN 201811128416 A CN201811128416 A CN 201811128416A CN 108981174 B CN108981174 B CN 108981174B
- Authority
- CN
- China
- Prior art keywords
- water
- water tank
- corrosion
- bucket
- orifice plate
- 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.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 193
- 238000005260 corrosion Methods 0.000 title claims abstract description 66
- 238000003672 processing method Methods 0.000 title description 5
- 239000004033 plastic Substances 0.000 claims abstract description 13
- 229920003023 plastic Polymers 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000012774 insulation material Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005187 foaming Methods 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 description 3
- 210000003298 dental enamel Anatomy 0.000 description 3
- 239000011152 fibreglass Substances 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000006223 plastic coating Substances 0.000 description 3
- 238000000071 blow moulding Methods 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Packages (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention provides a pressure-bearing solar water heater water tank with an anti-corrosion liner, which consists of a water tank shell and a water bucket arranged in the shell, wherein an end cover of the water bucket is provided with a water inlet pipe and a water outlet pipe; an anti-corrosion liner which is prefabricated by flexible materials and has the same diameter as the inner wall of the water tank is arranged in the water tank, an anti-corrosion gasket or an anti-corrosion layer is also arranged on the inner side of the end cover of the water tank, and a heat insulation material is poured between the water tank and the water tank shell. The invention uses coiled soft plastic pipe or rubber pipe to cut and open, and can embed the anti-corrosion inner container in the pressure-bearing bucket, the appearance of the anti-corrosion inner container is consistent with the inner wall of the straight bucket, and the anti-corrosion inner container does not need to be tightly adhered or adhered to the inner wall of the bucket by adopting a specific process. The cost is low, the process is simple, the disassembly and assembly are convenient, and the manufacturing cost of the water tank is greatly reduced.
Description
Technical Field
The invention relates to a pressure-bearing solar water heater water tank with an anti-corrosion liner and a processing method, and belongs to the technical field of solar heat utilization equipment.
Background
The integrated technology of the solar water heater and the building is developed greatly, and is an important national policy for utilizing clean energy in China. The main product of the solar water heater and the building integration consists of a solar heat collector and a split water tank, wherein the pressure-bearing split water tank is most commonly used on urban high-rise buildings.
At present, one of the key problems of the split type water tank is corrosion damage, the prior art corrosion prevention measures are enamel on the inner wall of the steel bucket, and the prior art corrosion prevention measures are plastic coating or lining of glass fiber reinforced plastic on the inner wall of the bucket. Because the expansion coefficient difference between the two layers of the leather-type anti-corrosion layer and the metal wall surface is large, the water pressure and the temperature difference in the water tank are frequent, the time is slightly long, the anti-corrosion layer is easy to fall off, peel off, crack and the like, and the water tank is quickly corroded and destroyed once the fault occurs. The basic requirement of the integration of the solar water heater and the building is that the water heater and the building have the same service life, the pressure-bearing water tank is easy to corrode and damage, the service life is short, and the water tank is a key bottleneck for preventing the technical development of the integration of the solar water heater and the building.
The invention patent 201410824765.7 discloses a production method of a metal water tank with a plastic lining, which mainly adopts the scheme that a blow molding extruder is arranged at an opening of the metal water tank, and blow molding products are directly attached to the inner wall of the metal water tank.
Another problem that the household solar water heater is easy to appear in the use process is that water inlet and outlet flow changes frequently, a temperature layer of water in a water tank is easily damaged, the highest or optimal water outlet temperature cannot be obtained when hot water is used, and precious heat energy obtained by the solar heat collector is wasted. Therefore, the temperature layer in the water tank is kept stable, water is taken at a proper position, effective energy saving is realized, and the water tank is a common problem to be solved by the solar water heater.
Disclosure of Invention
The invention aims to provide a pressure-bearing solar water heater water tank with an anti-corrosion liner, which solves the problems of corrosion and thermal cycle efficiency of the existing water storage water tank.
The technical scheme of the invention is realized as follows: the water tank of the pressure-bearing solar water heater with the anti-corrosion liner is composed of a water tank shell and a water tank arranged in the shell, wherein an end cover of the water tank is provided with a water inlet pipe and a water outlet pipe; an anti-corrosion liner which is prefabricated by flexible materials and has the same diameter as the inner wall of the water tank is arranged in the water tank, an anti-corrosion gasket or an anti-corrosion layer is also arranged on the inner side of the end cover of the water tank, and a heat insulation material is poured between the water tank and the water tank shell.
The pressure-bearing solar water heater water tank provided with the anti-corrosion inner container is made of coiled soft plastic pipes or rubber pipe sections.
The water tank of the pressure-bearing solar water heater with the anti-corrosion liner is characterized in that 1 or N water tanks are arranged in a water tank shell, and each water tank is connected in series through a communicating pipe on the end face when the N water tanks are arranged.
The water tank of the pressure-bearing solar water heater is provided with an anti-corrosion liner, and an upper steady flow orifice plate, a lower steady flow orifice plate and an orifice plate bracket for fixing the steady flow orifice plate are also arranged in the anti-corrosion liner; the water inlet pipe is communicated with the water bucket from the lower part of the lower steady flow orifice plate, the water outlet pipe is communicated with the water bucket from the upper part of the upper steady flow orifice plate, and the water taking mode is vice versa.
The processing method of the pressure-bearing solar water heater water tank provided with the anti-corrosion liner comprises the following steps of:
A. a water tank housing: firstly, processing the box body into a rectangular box body without the upper surface;
B. bucket (C): the two ends of the 1-N cylindrical metal pressure-bearing water barrels are processed into conical surface flanges by adopting an expanding process, and 4-12 bolt holes are uniformly distributed on the circumferences of the flanges;
C. and (3) end covers: the taper angle of the conical end cover is the same as that of the conical flange of the bucket, bolt holes are uniformly distributed on the circumference of the end cover and correspond to the bolt holes on the conical flange, and a water inlet pipe, a water outlet pipe and a communicating pipe are welded in advance as required;
D. an anti-corrosion liner: cutting the coiled soft plastic pipe into sections, and then stretching the sections into a cylinder shape to obtain an anti-corrosion liner, and sleeving the anti-corrosion liner into a water bucket;
E. placing an upper steady flow orifice plate and a lower steady flow orifice plate, and fixing the orifice plates in the anti-corrosion liner by using an orifice plate bracket;
F. and (3) end covers: the end cover faces the inner wall of the bucket, is coated with an anti-corrosion material or is additionally provided with a plastic gasket, and then is fastened and connected with the bucket by a locking nut;
G. after two or N water tanks are connected, the water tank panel is buckled after the water tanks are placed in the center of the water tank shell, and a foaming heat-insulating material is injected between the water tanks and the water tank shell to form a heat-insulating layer after heat preservation and solidification.
The invention provides a pressure-bearing solar water heater water tank with an anti-corrosion liner, which has the technical progress effects that:
1. the anti-corrosion inner container can be arranged in the pressure-bearing water bucket by cutting and expanding the coiled soft plastic pipe or the rubber pipe, the appearance of the anti-corrosion inner container is consistent with the inner wall of the straight barrel type water bucket, and the anti-corrosion inner container does not need to be closely adhered or adhered to the inner wall of the water bucket by adopting a specific process. The anti-corrosion liner completely isolates the pressurized water from the water bucket metal material, thoroughly solves the problem of corrosion caused by contact between the metal container and water, and solves the key problem for the development of the solar water heater and building integrated technology. The anti-corrosion liner has low price, simple process and convenient disassembly and assembly, and greatly reduces the manufacturing cost of the water tank. And expensive production equipment such as enamel, plastic coating, glass fiber reinforced plastic lining and the like is not needed, so that the investment of the production equipment is saved.
2. An upper stable flow orifice plate and a lower stable flow orifice plate are arranged in the inner container of the water bucket, the water inlet is arranged below the orifice plate, the water outlet is arranged above the orifice plate, the orifice plate can effectively reduce the damage of water inlet and outlet flow to a temperature layer in the water tank, and when hot water is used, the highest or optimal water outlet temperature can be obtained at the water outlet, so that the energy-saving effect is obvious.
Drawings
FIG. 1 is a front view of a water tank according to the present invention
FIG. 2 is a schematic view of an anti-corrosive liner of the present invention
FIG. 3 is a view in the direction A of FIG. 1
FIG. 4 is an enlarged view of FIG. 1 at B
In the figure: 1. water outlet pipe 2, water bucket 3, anti-corrosion liner 4, upper steady flow pore plate
5. Thermal insulation material layer 6, end cover 7, locking bolt 8 and locking nut
9. Water inlet pipe 10, lower steady flow orifice plate 11, water tank shell 12 and orifice plate bracket
13. Communicating pipe 14, anti-corrosion gasket or anti-corrosion layer 15, water tank panel
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
The technical key of the pressure-bearing solar water heater water tank provided with the anti-corrosion inner container is that the existing plastic pipe or rubber pipe is cut off and put into a bucket to serve as an anti-corrosion inner container sleeve, expensive production equipment such as enamel, plastic coating and glass fiber reinforced plastic lining is not needed, and the investment of production equipment and the process cost are saved.
As shown in fig. 1: the invention provides a pressure-bearing solar water heater water tank with an anti-corrosion liner, which consists of a water tank shell 11 and a water bucket 2 arranged in the shell, wherein an end cover 6 of the water bucket is provided with a water inlet pipe 9 and a water outlet pipe 1; an anti-corrosion liner 3 which is prefabricated by flexible materials and has the same diameter as the inner wall of the water tank is arranged in the water tank, an anti-corrosion gasket or an anti-corrosion layer 14 is also arranged on the inner side of the end cover 6 of the water tank, and a poly-foaming urethane heat-insulating material 5 is poured between the water tank and the water tank shell.
In order to facilitate the installation on a building wall and reduce the area occupying the wall surface, the water tank shell is designed to be rectangular, the water bucket is designed to be rectangular or cylindrical, and the anti-corrosion liner is made of coiled soft plastic pipes or rubber pipe sections.
The water tanks 2 are arranged in 1 or N arrays in the water tank shell 11, and each water tank is connected in series through the communicating pipe 13 on the end face when the N water tanks are arranged.
In order to reduce the damage of water inflow and outflow to the temperature layer in the water tank, an upper steady flow orifice plate 4, a lower steady flow orifice plate 10 and an orifice plate bracket 12 for fixing the steady flow orifice plate are also arranged in the anti-corrosion liner; the water inlet pipe is communicated with the water bucket from the lower part of the lower steady flow orifice plate 10, the water outlet pipe is communicated with the water bucket from the upper part of the upper steady flow orifice plate 4, and the water taking mode is vice versa by connecting the communicating pipes 13 in series between the water bucket and the water bucket.
The processing method of the pressure-bearing solar water heater water tank with the anti-corrosion liner comprises the following steps:
(1) A water tank housing: firstly, processing the box body into a rectangular box body without the upper surface;
(2) Bucket (C): the two ends of the 1-N cylindrical metal pressure-bearing water barrels 2 are processed into conical surface flanges by adopting an expanding process, and 4-12 bolt holes are uniformly distributed on the circumferences of the flanges;
(3) And (3) end covers: the taper angle of the conical end cover is the same as that of the conical flange of the bucket, bolt holes are uniformly distributed on the circumference of the end cover and correspond to the bolt holes on the conical flange, and a water inlet pipe, a water outlet pipe and a communicating pipe are welded in advance as required;
(4) An anti-corrosion liner: cutting the coiled soft plastic pipe into sections, and then stretching the sections into a cylinder shape to obtain an anti-corrosion liner, and sleeving the anti-corrosion liner into a water bucket;
(5) Placing an upper steady flow orifice plate 4 and a lower steady flow orifice plate 10, and fixing the orifice plate in an anti-corrosion liner by an orifice plate bracket 12;
(6) And (3) end covers: the end cover faces the inner wall of the water bucket, an anti-corrosion material is coated or a plastic gasket 14 is additionally arranged, and then the end cover is fastened and connected with the water bucket by a locking nut;
(7) After two or N water tanks are connected, the water tank panel 15 is buckled after the water tanks are placed in the center of the water tank shell, and a foaming heat-insulating material is injected between the water tanks and the water tank shell to form a heat-insulating layer after heat preservation and solidification.
The embodiment of the invention selects and combines 2 cylindrical metal pressure-bearing water barrels 2. An anti-corrosion layer can be coated in the bucket in advance before assembly, and a sealing ring is arranged on the contact surface of the anti-corrosion liner and the flange to prevent water leakage.
Claims (2)
1. The utility model provides a pressure-bearing solar water heater water tank of anticorrosive inner bag is set up, comprises water tank shell (11) and cask (2) that set up in the shell, and end cover (6) of cask are provided with inlet tube (9) and outlet pipe (1), its characterized in that: the water barrel is a straight barrel, two ends of the water barrel are processed into conical surface flanges, 4-12 bolt holes are uniformly distributed on the circumference of each flange, an end cover (6) of the water barrel is also processed into a conical surface with the same shape as the taper angle of the conical surface flange of the water barrel, and the bolt holes uniformly distributed on the circumference of the end cover correspond to the bolt holes on the conical surface flange; an anti-corrosion liner (3) which is prefabricated by flexible materials and has the same diameter as the inner wall of the water barrel is arranged in the water barrel, an anti-corrosion gasket or an anti-corrosion layer (14) is also arranged on the inner side of the end cover (6) of the water barrel, and a heat insulation material (5) is poured between the water barrel and the water tank shell;
the anti-corrosion liner is made of coiled soft plastic pipes or rubber pipe sections;
the water tanks (2) are arranged in 1 or N arrangements in the water tank shell (11), and each water tank is connected in series through a communicating pipe (13) at the end surface when the N water tanks are arranged;
an upper steady flow orifice plate (4), a lower steady flow orifice plate (10) and an orifice plate bracket (12) for fixing the steady flow orifice plate are also arranged in the anti-corrosion liner; the water inlet pipe is communicated with the water bucket from the lower part of the lower steady flow orifice plate (10), the water outlet pipe is communicated with the water bucket from the upper part of the upper steady flow orifice plate (4), and the water taking mode is vice versa.
2. The method for manufacturing a water tank of a pressure-bearing solar water heater provided with an anti-corrosion liner according to claim 1, comprising the following steps:
A. a water tank housing: firstly, processing the box body into a rectangular box body without the upper surface;
B. bucket (C): the two ends of the 1-N cylindrical metal pressure-bearing water barrels are processed into conical surface flanges by adopting an expanding process, and 4-12 bolt holes are uniformly distributed on the circumferences of the flanges;
C. and (3) end covers: the taper angle of the conical end cover is the same as that of the conical flange of the bucket, bolt holes are uniformly distributed on the circumference of the end cover and correspond to the bolt holes on the conical flange, and a water inlet pipe, a water outlet pipe and a communicating pipe are welded in advance as required;
D. an anti-corrosion liner: cutting the coiled soft plastic pipe into sections, and then stretching the sections into a cylinder shape to obtain an anti-corrosion liner, and sleeving the anti-corrosion liner into a water bucket;
E. placing an upper steady flow orifice plate and a lower steady flow orifice plate, and fixing the orifice plates in the anti-corrosion liner by using an orifice plate bracket;
F. and (3) end covers: the end cover faces the inner wall of the bucket, is coated with an anti-corrosion material or is additionally provided with a plastic gasket, and then is fastened and connected with the bucket by a locking nut;
G. after two or N water tanks are connected, the water tank panel is buckled after the water tanks are placed in the center of the water tank shell, and a foaming heat-insulating material is injected between the water tanks and the water tank shell to form a heat-insulating layer after heat preservation and solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128416.6A CN108981174B (en) | 2018-09-27 | 2018-09-27 | Pressure-bearing solar water heater water tank with anti-corrosion liner and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811128416.6A CN108981174B (en) | 2018-09-27 | 2018-09-27 | Pressure-bearing solar water heater water tank with anti-corrosion liner and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108981174A CN108981174A (en) | 2018-12-11 |
| CN108981174B true CN108981174B (en) | 2024-01-30 |
Family
ID=64543034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811128416.6A Active CN108981174B (en) | 2018-09-27 | 2018-09-27 | Pressure-bearing solar water heater water tank with anti-corrosion liner and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108981174B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126555A (en) * | 2006-08-18 | 2008-02-20 | 李庆祝 | Single inner container solar water heater water tank |
| CN101131262A (en) * | 2006-08-26 | 2008-02-27 | 李庆祝 | Double-inner container solar water heater tank |
| CN101216221A (en) * | 2007-12-28 | 2008-07-09 | 常州市禾佳阳光能源技术有限公司 | Flat-plate water tank for water heater |
| WO2009077966A2 (en) * | 2007-12-14 | 2009-06-25 | Activehome Ltd. | Heater tank |
| CN201837068U (en) * | 2010-10-29 | 2011-05-18 | 齐海艳 | Inner tank of pressure-bearing water storage tank of water heater |
| CN203797974U (en) * | 2014-04-04 | 2014-08-27 | 黄永伟 | Solar water heater |
| CN105020894A (en) * | 2014-04-21 | 2015-11-04 | 广东顺德光晟电器股份有限公司 | Double-barrel plastic liner for electric water heater |
| CN107339817A (en) * | 2017-06-30 | 2017-11-10 | 浙江神太太阳能股份有限公司 | A kind of novel heat exchange type solar energy |
| CN209214121U (en) * | 2018-09-27 | 2019-08-06 | 衡水绿能阳光光能科技有限公司 | A kind of pressure-bearing solar water heater water tank that anticorrosive inner bag is set |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204943866U (en) * | 2015-06-02 | 2016-01-06 | 韩玲菊 | Anyhow dual-purpose electric heater |
-
2018
- 2018-09-27 CN CN201811128416.6A patent/CN108981174B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101126555A (en) * | 2006-08-18 | 2008-02-20 | 李庆祝 | Single inner container solar water heater water tank |
| CN101131262A (en) * | 2006-08-26 | 2008-02-27 | 李庆祝 | Double-inner container solar water heater tank |
| WO2009077966A2 (en) * | 2007-12-14 | 2009-06-25 | Activehome Ltd. | Heater tank |
| CN101216221A (en) * | 2007-12-28 | 2008-07-09 | 常州市禾佳阳光能源技术有限公司 | Flat-plate water tank for water heater |
| CN201837068U (en) * | 2010-10-29 | 2011-05-18 | 齐海艳 | Inner tank of pressure-bearing water storage tank of water heater |
| CN203797974U (en) * | 2014-04-04 | 2014-08-27 | 黄永伟 | Solar water heater |
| CN105020894A (en) * | 2014-04-21 | 2015-11-04 | 广东顺德光晟电器股份有限公司 | Double-barrel plastic liner for electric water heater |
| CN107339817A (en) * | 2017-06-30 | 2017-11-10 | 浙江神太太阳能股份有限公司 | A kind of novel heat exchange type solar energy |
| CN209214121U (en) * | 2018-09-27 | 2019-08-06 | 衡水绿能阳光光能科技有限公司 | A kind of pressure-bearing solar water heater water tank that anticorrosive inner bag is set |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108981174A (en) | 2018-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203489726U (en) | Condenser water box | |
| CN108981174B (en) | Pressure-bearing solar water heater water tank with anti-corrosion liner and processing method | |
| CN204083536U (en) | A kind of large-diameter steel-plastic composite pipe | |
| CN209214121U (en) | A kind of pressure-bearing solar water heater water tank that anticorrosive inner bag is set | |
| CN206320464U (en) | Repairing applied to PCCP pipe fittings connects section | |
| CN214579731U (en) | Cotton multilayer cold insulation structure pipeline of rubber and plastic heat preservation | |
| CN211739274U (en) | Polyethylene PE inner bag pressure-bearing buffer water tank | |
| CN203463872U (en) | Prefabricated direct-buried thermal insulation composite plastic pipe | |
| CN108626898A (en) | A kind of the pressure-bearing solar water heater water tank and processing method of setting anticorrosive inner bag | |
| CN209100707U (en) | A kind of blow-off line with anti-backflow device | |
| CN210601876U (en) | Heating radiator device | |
| CN206766790U (en) | A kind of high-temperature resistant anti-corrosive tank body | |
| CN207271209U (en) | A kind of lightweight pressure vessel | |
| CN212900077U (en) | Tetrafluoro valve plate with high sealing performance | |
| CN220118930U (en) | Corrosion-resistant PE water supply pipe | |
| CN111237854A (en) | Polyethylene PE inner container pressure-bearing buffer water tank and manufacturing process thereof | |
| CN209558465U (en) | A kind of pressure-resistant corrosion-resistant floor heating multiple tube with squeeze | |
| CN101358778A (en) | Water tank for solar energy water heater and method for making same | |
| CN2532411Y (en) | Double-liner pressure-loaded water-heater | |
| CN211011613U (en) | Pressure-bearing type heat preservation water tank | |
| CN218378365U (en) | Prefabricated pipe fitting of heat supply plastic pipeline interface | |
| CN115896784B (en) | Cobalt removing device and cobalt removing method for diamond compact | |
| CN218719410U (en) | High-temperature-resistant polyethylene heat-insulating pipe | |
| CN217356092U (en) | Air bleeder for hot water pipeline for town heat supply | |
| CN2566086Y (en) | Middle cellular aluminium-cladding plastic pipe |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |