CN203757266U - High-temperature-resistant non-metal expansion joint - Google Patents
High-temperature-resistant non-metal expansion joint Download PDFInfo
- Publication number
- CN203757266U CN203757266U CN201420048724.9U CN201420048724U CN203757266U CN 203757266 U CN203757266 U CN 203757266U CN 201420048724 U CN201420048724 U CN 201420048724U CN 203757266 U CN203757266 U CN 203757266U
- Authority
- CN
- China
- Prior art keywords
- expansion joint
- main frame
- frame
- resistant non
- baffle 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.)
- Expired - Fee Related
Links
- 229910052755 nonmetal Inorganic materials 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 24
- 239000011819 refractory material Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000004744 fabric Substances 0.000 claims description 9
- 239000003365 glass fiber Substances 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 6
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 claims description 6
- 229910000323 aluminium silicate Inorganic materials 0.000 claims description 6
- 235000012211 aluminium silicate Nutrition 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 210000002268 wool Anatomy 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004809 Teflon Substances 0.000 claims description 3
- 229920006362 Teflon® Polymers 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000005266 casting Methods 0.000 abstract description 6
- 238000009835 boiling Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 150000002843 nonmetals Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Building Environments (AREA)
Abstract
The utility model discloses a high-temperature-resistant non-metal expansion joint, relates to an expansion joint applied to the outlet of a boiling furnace, and aims to provide a high-temperature-resistant non-metal expansion joint, which has high sealing performance, high heat-insulating performance, high corrosion resistance and high structural strength. The high-temperature-resistant non-metal expansion joint comprises a main frame, an auxiliary frame, a covering, a secondary frame, casting baffle plates and a plurality of anchoring screws, wherein the main frame is rectangular; the auxiliary frame is arranged on the outer side of the main frame, and consists of two plates; the covering is arranged between the lower ends of the two plates, and is formed by compounding multiple layers of materials; the secondary frame and two casting baffle plates are arranged on the inner side of the main frame; the secondary frame consists of two inverted L-shaped plates, are positioned on the front side and the back side of the secondary frame, and are matched with the secondary frame tightly; the anchoring screws are positioned on the front sides and the back sides of the casting baffle plates, are fixed to the main frame, and are used for fixing refractory materials filled into the front and back sides of the casting baffle plates to the main frame. The high-temperature-resistant non-metal expansion joint is filled with a heat insulating material.
Description
Technical field
The utility model relates to a kind of expansion joint, particularly relates to a kind of high temperature resistant non-metal expansion joint for boiling furnace outlet.
Background technique
Sulfuric acid industry in the acid-making process of raw material, adopts boiling roaster sulphur ore deposit raw material to make the flue gas containing sulfur dioxide taking pyrite or nonferrous metal sulfide mineral more, is called for short calcining process.Then make sulfuric acid through operations such as purification, conversion and absorptions.
Boiling furnace volume is large, and furnace temperature is high, and thermal expansion amount is larger, for reducing secondary stress, improves working life, must an expansion joint be set at the horizontal short tube place of boiling furnace smoke outlet, comes compensating axial and swell increment radially.Generally select rigidity low, the non-metal expansion joint that compensation rate is large.Non-metal expansion joint of the prior art has following defect and deficiency: covering material corrosion resistance performance deficiency, and perishable; Labyrinth structure is unreasonable, and effect of heat insulation is poor, and thermal-protective material easily comes off; The circumferential thermal expansion amount of inner frame is larger, and frame deformation can push refractory material and make it to come off; In refractory material, sectional shape and anchor nails arrangement are unreasonable, and refractory material easily comes off.
Model utility content
It is strong that the technical problems to be solved in the utility model is to provide a kind of sealability, heat-shielding performance, decay resistance, the high temperature resistant non-metal expansion joint that structural strength is high.
The utility model is high temperature resistant non-metal expansion joint, its cross section is rectangle, comprise main frame, sub-frame and covering, main frame is rectangle, described main frame outside is provided with sub-frame, described sub-frame is two boards, and two boards is provided with covering between lower end, and described covering is composited by multilayer material.Comprise in addition time framework, cast baffle plate and several anchor nails, between described covering joint layers of material, adopt silica gel and fluororesin binder to be composited, the cross section on every limit of described main frame is the rectangle not sealing, on inside and outside two limits of the described rectangle not sealing, be respectively processed with first expansion joint, liner plate is equipped with at the first outside, expansion joint, described main frame inner side is provided with time framework and two cast baffle plates, inferior framework is made up of two inverted L shaped plates, the bottom welding of inverted L shaped plate is on main frame, the crown center of two boards leaves the second expansion joint, liner plate is equipped with at the second outside, expansion joint, described the first expansion joint and the second expansion joint are positioned on same axis, cast baffle plate is positioned at time framework both sides, front and back and is connected with inferior framework, described cast baffle plate is fixed on time framework, described anchor nails is positioned at cast baffle plate both sides, front and back and is fixed on main frame, for the refractory material that before and after cast baffle plate, fill both sides is fixed on to main frame, described refractory material installs inner top pouring at this and overarches, water and outpour certain thickness rectangle refractory layer in this bottom of device, be slightly larger than the length of the anchor nails of installing the main frame left and right sides at the thickness of the refractory material of this device left and right sides, described main frame outside, the interior volume that sub-frame and covering surround, main frame inside, the interior volume that inferior framework and main frame inner side surround, in the space that inferior framework inner side and cast baffle plate surround, be all filled with thermoinsulation material, the thickness of described thermoinsulation material is determined according to actual serviceability temperature.
The utility model is high temperature resistant non-metal expansion joint, wherein said covering forms by 5 layers, is followed successively by from outside to inside 1.7mm Silicone Rubber Coated glass fiber cloth, 0.4mm polytetrafluoroethylene film, 0.7mm alkali-free glass fiber cloth, 0.4mm polytetrafluoroethylene film and 1.7mm teflon coated glass fiber cloth.
The utility model is high temperature resistant non-metal expansion joint, wherein said main frame is that angle steel is welded.
The utility model is high temperature resistant non-metal expansion joint, wherein said main frame outside is also provided with otic placode, and otic placode lays respectively at sub-frame both sides, and pull bar is installed between otic placode.
The utility model is high temperature resistant non-metal expansion joint, the second top, expansion joint of wherein said framework a square baffle plate is each side installed, square baffle plate is connected with inferior framework, between two square baffle plates, waveform liner plate is installed.Described waveform liner plate is selected has good heat resistance and the stainless steel of high temperature oxidation resistance.
The utility model is high temperature resistant non-metal expansion joint, wherein said sub-frame, inferior framework, anchor nails are all welded on main frame.
The utility model is high temperature resistant non-metal expansion joint, wherein said thermoinsulation material is selected aluminium silicate wool, and thermoinsulation material is outside with stainless steel and iron silk screen parcel, prevents that aluminium silicate wool runs off.
The utility model is high temperature resistant non-metal expansion joint, wherein said main frame is processed with several purge holes around.
Non-metal expansion joint difference from prior art that the utility model is high temperature resistant is that the refractory material casting of the high temperature resistant non-metal expansion joint inside top of the utility model overarches, and has increased cast intensity, refractory material difficult drop-off.Anchor nails used for refractory material is welded on main frame, and thick and heavy refractory material is born by main frame, and device overall construction intensity is larger.Between the multilayer material of covering, adopt silica gel and fluororesin binder to be composited, the corrosion of all right resistance to various strong acid, highly basic, strong oxidizer and organic solvent in having strengthened sealing.This device inside is divided into multiple regions by multiple liner plates in main frame and time framework, in each region, be all filled with thermoinsulation material, simultaneously outside with stainless steel and iron silk screen parcel at thermoinsulation material, can effectively avoid like this thermoinsulation material to install inner movement and loss at this, ensure that this installs good heat-shielding performance.On this device main frame and time framework, be processed with expansion joint, liner plate is installed in outside, expansion joint, can meet the expansion displacement on this device axial and circumferential by the deformation of liner plate self, has ensured to install overall stability.
Below in conjunction with accompanying drawing, high temperature resistant non-metal expansion joint of the present utility model is described further.
Brief description of the drawings
Fig. 1 is the plan view of the high temperature resistant non-metal expansion joint of the utility model;
Fig. 2 is the side view of the high temperature resistant non-metal expansion joint of the utility model;
Fig. 3 is the partial enlarged drawing at A place in Fig. 2.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the utility model is high temperature resistant, and non-metal expansion joint cross section is rectangle, comprises main frame 1, sub-frame 2, inferior framework 3, covering 4, square baffle plate 5, square baffle plate 6, anchor nails 7, pull bar 8, liner plate 10.As shown in Figure 3, main frame 1 is rectangle, selects angle steel to be welded, and the cross section on its every limit is the rectangle not sealing, and is respectively processed with 15 outsides, 15, the first expansion joint, first expansion joint liner plate 10 is housed on inside and outside two limits of not sealing rectangle.Main frame 1 outside is provided with sub-frame 2, and sub-frame 2 is two boards, and covering 4 is installed between two boards lower end.Covering 4 forms by 5 layers altogether, be followed successively by from outside to inside 1.7mm Silicone Rubber Coated glass fiber cloth, 0.4mm polytetrafluoroethylene film, 0.7mm alkali-free glass fiber cloth, 0.4mm polytetrafluoroethylene film and 1.7mm teflon coated glass fiber cloth, adopt between layers silica gel and fluororesin binder to be composited, can resistance to various strong acid, the corrosion of highly basic, strong oxidizer and organic solvent, long-term work temperature is not more than 250 DEG C.Main frame 1 outside is also provided with otic placode 9, and otic placode 9 lays respectively at sub-frame 2 both sides, and pull bar 8 is installed between otic placode 9.Main frame 1 inner side is provided with time framework 3, two cast baffle plates 6 and several anchor nails 7.Inferior framework 3 is made up of two inverted L shaped plates, the bottom welding of inverted L shaped plate is on main frame 1, the crown center of two boards leaves the second 16 installation liner plate 10, the first expansion joints 15, outsides, 16, the second expansion joint, expansion joint and the second expansion joint 16 is positioned on same axis.When use, can meet the expansion displacement on this device axial and circumferential by the deformation of liner plate on expansion joint 10 self.Square baffle plate 6 is positioned at time framework 3 both sides, front and back and is connected with inferior framework 3.Anchor nails 7 is positioned at the both sides, front and back of cast baffle plate 6, is fixed on main frame 1 for the refractory material 13 that cast baffle plate 6 both sides, front and back are filled, and is born the weight of refractory material 13 by main frame 1.As shown in Figure 1, refractory material 13 installs inner top pouring at this and overarches, and to increase casting material strength, makes it difficult drop-off; Water and outpour certain thickness rectangle refractory layer in this bottom of device, prevent from washing away for a long time the fire-resistant effect of impact because of air-flow; Be slightly larger than the length of the anchor nails 7 of installing main frame both sides at the thickness of the refractory material 13 of this device left and right sides.As shown in Figure 3, the both sides, front and back of 16 inner sides, the second expansion joint of inferior framework 3 are respectively provided with a square baffle plate 5, and square baffle plate 5 closely cooperates with cast baffle plate 6, between two square baffle plates 5, waveform liner plate 11 is installed.Waveform liner plate 11 is selected has good heat resistance and the stainless steel of high temperature oxidation resistance, and long-term serviceability temperature can reach 1035 DEG C.The interior volume that main frame 1 outside, sub-frame 2 and covering 4 surround, main frame 1 inside, the interior volume that inferior framework 3 and main frame 1 inner side surround, in the space that inferior framework 3 inner sides and cast baffle plate 6 surround, be all filled with thermoinsulation material 12, the thickness of thermoinsulation material 12 is determined according to actual serviceability temperature, ensures that outer skin 4 temperature are not more than 50 DEG C.Thermoinsulation material 12 is selected aluminium silicate wool, and thermoinsulation material 12 is outside with stainless steel and iron silk screen parcel, prevents that aluminium silicate wool runs off.As shown in Figure 1, this device can arrange several purge holes 14 around, when shutdown, uses, and prevents from shutting down rear SO
2flue gas enters this device inside and forms condensation acid, this is installed to each component and cause corrosion.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skill in the art make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (8)
1. a high temperature resistant non-metal expansion joint, its cross section is rectangle, comprise main frame, sub-frame and covering, main frame is rectangle, described main frame outside is provided with sub-frame, described sub-frame is two boards, two boards is provided with covering between lower end, described covering is composited by multilayer material, it is characterized in that: also comprise time framework, cast baffle plate and several anchor nails, between described covering joint layers of material, adopt silica gel and fluororesin binder to be composited, the cross section on every limit of described main frame is the rectangle not sealing, on inside and outside two limits of the described rectangle not sealing, be respectively processed with first expansion joint, liner plate is equipped with at the first outside, expansion joint, described main frame inner side is provided with time framework and two cast baffle plates, inferior framework is made up of two inverted L shaped plates, the bottom welding of inverted L shaped plate is on main frame, the crown center of two boards leaves the second expansion joint, liner plate is equipped with at the second outside, expansion joint, described the first expansion joint and the second expansion joint are positioned on same axis, cast baffle plate is positioned at time framework both sides, front and back and is connected with inferior framework, described cast baffle plate is fixed on time framework, described anchor nails is positioned at cast baffle plate both sides, front and back and is fixed on main frame, for the refractory material that before and after cast baffle plate, fill both sides is fixed on to main frame, described refractory material installs inner top pouring at this and overarches, water and outpour certain thickness rectangle refractory layer in this bottom of device, be slightly larger than the length of the anchor nails of installing the main frame left and right sides at the thickness of the refractory material of this device left and right sides, described main frame outside, the interior volume that sub-frame and covering surround, main frame inside, the interior volume that inferior framework and main frame inner side surround, in the space that inferior framework inner side and cast baffle plate surround, be all filled with thermoinsulation material, the thickness of described thermoinsulation material is determined according to actual serviceability temperature.
2. high temperature resistant non-metal expansion joint according to claim 1, it is characterized in that: described covering forms by 5 layers, be followed successively by from outside to inside 1.7mm Silicone Rubber Coated glass fiber cloth, 0.4mm polytetrafluoroethylene film, 0.7mm alkali-free glass fiber cloth, 0.4mm polytetrafluoroethylene film and 1.7mm teflon coated glass fiber cloth.
3. high temperature resistant non-metal expansion joint according to claim 1, is characterized in that: described main frame is that angle steel is welded.
4. high temperature resistant non-metal expansion joint according to claim 1, is characterized in that: described main frame outside is also provided with otic placode, and otic placode lays respectively at sub-frame both sides, and pull bar is installed between otic placode.
5. high temperature resistant non-metal expansion joint according to claim 1, it is characterized in that: the second expansion joint top of described framework a square baffle plate is each side installed, square baffle plate closely cooperates with cast baffle plate, between two square baffle plates, waveform liner plate is installed, described waveform liner plate is selected has good heat resistance and the stainless steel of high temperature oxidation resistance.
6. high temperature resistant non-metal expansion joint according to claim 1, is characterized in that: described sub-frame, inferior framework, cast baffle plate, anchor nails are all welded on main frame.
7. high temperature resistant non-metal expansion joint according to claim 1, is characterized in that: described thermoinsulation material is selected aluminium silicate wool, and thermoinsulation material is outside with stainless steel and iron silk screen parcel, prevents that aluminium silicate wool runs off.
8. high temperature resistant non-metal expansion joint according to claim 1, is characterized in that: described main frame is processed with several purge holes around.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048724.9U CN203757266U (en) | 2014-01-24 | 2014-01-24 | High-temperature-resistant non-metal expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420048724.9U CN203757266U (en) | 2014-01-24 | 2014-01-24 | High-temperature-resistant non-metal expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203757266U true CN203757266U (en) | 2014-08-06 |
Family
ID=51252542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420048724.9U Expired - Fee Related CN203757266U (en) | 2014-01-24 | 2014-01-24 | High-temperature-resistant non-metal expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203757266U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736887A (en) * | 2016-04-27 | 2016-07-06 | 江苏奎泽机械工业有限公司 | Nonmetallic expansion joint |
| CN114877113A (en) * | 2022-04-27 | 2022-08-09 | 宁波方太厨具有限公司 | Prevent frostbite and split valve body and contain its gas heater |
-
2014
- 2014-01-24 CN CN201420048724.9U patent/CN203757266U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736887A (en) * | 2016-04-27 | 2016-07-06 | 江苏奎泽机械工业有限公司 | Nonmetallic expansion joint |
| CN114877113A (en) * | 2022-04-27 | 2022-08-09 | 宁波方太厨具有限公司 | Prevent frostbite and split valve body and contain its gas heater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203757266U (en) | High-temperature-resistant non-metal expansion joint | |
| CN201569510U (en) | Temperature thermocouple for bottom part of long-life glass tank furnace | |
| CN202000002U (en) | Novel anticorrosion and anti-deformation heat preserving seal groove cover for electrolysis bath | |
| CN101252794B (en) | Conductive rod seal insulating device of electric heating stove and electric heating stove using the same | |
| CN103727791B (en) | A kind of modular construction of industrial furnace radiant section | |
| CN104976893A (en) | Steel structure of wall of industrial furnace | |
| CN205763814U (en) | A kind of on-deformable continuous casting tundish cover plate | |
| CN205066457U (en) | Inside lining is pour to whole injection | |
| CN204778847U (en) | Petroleum coke pot -type calcining furnace cooling jacket | |
| CN210916137U (en) | Converter body apron board | |
| CN202485438U (en) | Industrial furnace | |
| CN209229212U (en) | A kind of high temperature resistant non-metal compensator | |
| CN204075183U (en) | A kind of electric furnace steel ladle gas toast burner | |
| CN208950121U (en) | Aluminum honeycomb panel curtain wall | |
| CN208733876U (en) | Building partition structure | |
| CN205878935U (en) | Bake energy -conserving combination formula cross wall controlling means of burning furnace flame path over a slow fire | |
| CN105937621A (en) | Sealing structure for load-bearing beam penetrating flue protection board | |
| CN206052122U (en) | A kind of aluminium alloy smelting system | |
| CN204923877U (en) | Acid gas fires burning furnace refractory castable furnace wall metal anchorage point connection structure | |
| CN102410736A (en) | Fibrous combined type heating cover plate for radiation pipe | |
| CN205132869U (en) | Thermal -insulated elevator layer of fire prevention door | |
| CN204214286U (en) | The split type bonnet of rotatable metallurgical furnace and there is its rotatable metallurgical furnace | |
| CN216432547U (en) | Flue compensator | |
| CN207975987U (en) | Deform recoverable stove gate device | |
| CN203794931U (en) | Labyrinth converter bearing block slag stopper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 066004 Yongding River Channel 20, Qinhuangdao Economic and Technological Development Zone, Hebei Province Patentee after: Qinhuangdao new tube industry Limited by Share Ltd. Address before: 066004 Yongding River Channel 20, Qinhuangdao Economic and Technological Development Zone, Hebei Province Patentee before: QINHUANGDAO CITY NEW VIGOR PIPE CO.,LTD. |
|
| 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: 20140806 |