CN111237551A - Anticorrosive type insulating tube with spiral sheath - Google Patents
Anticorrosive type insulating tube with spiral sheath Download PDFInfo
- Publication number
- CN111237551A CN111237551A CN202010059666.XA CN202010059666A CN111237551A CN 111237551 A CN111237551 A CN 111237551A CN 202010059666 A CN202010059666 A CN 202010059666A CN 111237551 A CN111237551 A CN 111237551A
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- China
- Prior art keywords
- fiber reinforced
- glass fiber
- reinforced plastic
- protection shell
- wall
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- 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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Classifications
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- 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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
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- 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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/02—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing
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- 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
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- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
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- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
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- 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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses an anti-corrosion heat preservation pipe with a spiral sheath, which comprises a transmission steel pipe, wherein an inner plastic lining layer is arranged on the inner wall of the transmission steel pipe, the outer wall of the transmission steel pipe is coated with a heat preservation layer, an inner glass fiber reinforced plastic protection shell is fixedly sleeved on the outer wall of the heat preservation layer, an outer glass fiber reinforced plastic protection shell is fixedly sleeved on the inner glass fiber reinforced plastic protection shell, a certain gap exists between the outer glass fiber reinforced plastic protection shell and the inner glass fiber reinforced plastic protection shell, a plurality of buffer columns are fixedly arranged in the gap from left to right in an annular equidistant manner, and a polytetrafluoroethylene protection; outer glass steel protective housing bottom is turned right the equidistance from a left side and is equipped with a plurality of support bases, supports the base and rotates through the bearing and install two-way threaded rod, and two movable blocks are worn to be equipped with by the symmetry on the two-way threaded rod, and the symmetry is inserted and is equipped with two root point thorn poles on supporting the base lateral wall, and this insulating tube installation firmness is high, and stability is good, and more shock-resistant and extrusion possess good corrosion resisting property simultaneously, life is more permanent, simple structure, convenient and practical.
Description
Technical Field
The invention relates to the technical field of heat preservation pipes, in particular to an anti-corrosion heat preservation pipe with a spiral sheath.
Background
The high-temperature prefabricated direct-buried heat-insulating pipe not only has advanced technology and practical performance which are difficult to compare with the traditional trench and overhead laying pipeline, but also has remarkable social benefit and economic benefit, and is also a powerful measure for heat supply and energy conservation.
The existing heat preservation pipe is poor in installation firmness, easy to loosen due to extrusion of soil or stones, short in service life due to the fact that the existing heat preservation pipe does not have an anti-corrosion function, and therefore the invention provides the anti-corrosion heat preservation pipe with the spiral sheath to solve the problems.
Disclosure of Invention
An embodiment of the present invention is directed to providing an anti-corrosion thermal insulation pipe with a spiral sheath to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
an anti-corrosion type heat preservation pipe with a spiral sheath comprises a transmission steel pipe, wherein an inner plastic lining layer is arranged on the inner wall of the transmission steel pipe, a heat preservation layer is coated on the outer wall of the transmission steel pipe, an inner glass fiber reinforced plastic protection shell is fixedly sleeved on the outer wall of the heat preservation layer, an outer glass fiber reinforced plastic protection shell is fixedly sleeved on the inner glass fiber reinforced plastic protection shell, a certain gap exists between the outer glass fiber reinforced plastic protection shell and the inner glass fiber reinforced plastic protection shell, a plurality of buffer columns are fixedly arranged in the gap from left to right in an annular equidistant mode, and a polytetrafluoroethylene protection; turn right the equidistance from a left side and be equipped with a plurality of support bases in outer glass steel protective housing bottom, support the base and rotate through the bearing and install two-way threaded rod, two movable blocks are worn to be equipped with by the symmetry on the two-way threaded rod, and the symmetry is inserted on supporting the base lateral wall and is equipped with two spine poles, and two spine poles are close to the one end at support base center respectively with two movable block fixed connection.
In one alternative: the polytetrafluoroethylene protective layer is sleeved with a spiral protective sleeve, and the spiral protective sleeve is made of rubber materials.
In one alternative: the transmission steel pipe both ends all are fixed and are equipped with the connecting block, all are equipped with the sealing washer on the terminal surface at transmission steel pipe center is kept away from to the connecting block.
In one alternative: the heat-insulating layer comprises polystyrene foam plastics, a heat-insulating soft felt, a mineral wool board, a foam heat-insulating board and a polyester fiber board from inside to outside in sequence.
In one alternative: the buffer column comprises a sleeve and a support column, the support column is inserted into the sleeve in a sliding mode, and a buffering spring is arranged between one end, located in the sleeve, of the support column and the bottom of the inner cavity of the sleeve.
In one alternative: and the bottom of the supporting base is fixedly provided with a damping plate.
In one alternative: the fixed transmission spur gear that wears to be equipped with in two-way threaded rod middle part supports and rotates on the base inner wall and install first bull stick, and first bull stick is kept away from the fixed drive spur gear that is equipped with in one end that supports the base inner wall, drive spur gear and the meshing of transmission spur gear, the fixed transmission bevel gear that is equipped with on the first bull stick support the base top and rotate and install the second bull stick, and second bull stick lower extreme extends to and supports in the base and the fixed drive bevel gear that is equipped with, drive bevel gear and the meshing of transmission bevel gear, the fixed handle that is equipped with in second bull stick upper end evenly is equipped with anti-skidding line on hand.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
1. the heat-insulating pipe is provided with a supporting base, an outer glass fiber reinforced plastic protective shell, a polytetrafluoroethylene protective layer, a buffer column, an inner glass fiber reinforced plastic protective shell and an inner plastic lining layer, and has the advantages of high installation firmness, good stability, better impact and extrusion resistance, good corrosion resistance, longer service life, simple structure, convenience and practicability;
2. the spiral sheath is arranged, so that stones can be effectively prevented from damaging the polytetrafluoroethylene protective layer, and the corrosion resistance of the pipeline is ensured to be normal and stable.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
FIG. 3 is a schematic structural diagram of a buffer column according to a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.
Notations for reference numerals: 1-supporting base, 2-connecting block, 3-sealing ring, 4-spiral sheath, 5-outer glass fiber reinforced plastic protective shell, 6-polytetrafluoroethylene protective layer, 7-buffer column, 8-inner glass fiber reinforced plastic protective shell, 9-insulating layer, 10-inner lining plastic layer, 11-transmission steel pipe, 12-damping plate, 13-sharp rod, 14-bidirectional threaded rod, 15-movable block, 16-transmission flat gear, 17-driving flat gear, 18-transmission bevel gear, 19-first rotating rod, 20-driving bevel gear, 21-second rotating rod, 22-handle and 23-damping spring.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
Referring to fig. 1 to 3, in the embodiment of the invention, an anti-corrosion heat preservation pipe with a spiral sheath comprises a transmission steel pipe 11, wherein connecting blocks 2 are fixedly arranged at both ends of the transmission steel pipe 11, a sealing ring 3 is arranged on the end faces, away from the center of the transmission steel pipe 11, of the connecting blocks 2, an inner plastic lining layer 10 is arranged on the inner wall of the transmission steel pipe 11, a heat preservation layer 9 is coated on the outer wall of the transmission steel pipe 11, the heat preservation layer 9 is sequentially formed by polystyrene foam plastic, heat insulation soft felt, a mineral wool board, a foam heat preservation board and a polyester fiber board from inside to outside, an inner glass fiber reinforced plastic protection shell 8 is fixedly sleeved on the outer wall of the heat preservation layer 9, an outer glass fiber reinforced plastic protection shell 5 is fixedly sleeved on the inner glass fiber reinforced plastic protection shell 8, a certain gap exists between the outer glass fiber reinforced plastic protection shell 5 and the inner, the support column is inserted into the sleeve in a sliding mode, a cushioning spring 23 is arranged between one end, located in the sleeve, of the support column and the bottom of the inner cavity of the sleeve, and a polytetrafluoroethylene protective layer 6 is coated on the outer wall of the outer glass fiber reinforced plastic protective shell 5 in a brushing mode.
The bottom of the outer glass fiber reinforced plastic protective shell 5 is equidistantly provided with a plurality of supporting bases 1 from left to right, the bottom of each supporting base 1 is fixedly provided with a damping plate 12, the supporting base 1 is rotatably provided with a bidirectional threaded rod 14 through a bearing, the bidirectional threaded rod 14 is divided into two rod sections by the midpoint thereof, the thread directions are opposite, two movable blocks 15 are symmetrically arranged on the bidirectional threaded rod 14 in a penetrating way, the movable blocks 15 and the bidirectional threaded rod 14 are in threaded connection, the side wall of the supporting base 1 is symmetrically inserted with two sharp-pointed rods 13, the two sharp-pointed rods 13 are in sliding connection with the side wall of the supporting base 1, one ends of the two sharp-pointed rods 13 close to the center of the supporting base 1 are respectively and fixedly connected with the two movable blocks 15, the middle part of the bidirectional threaded rod 14 is fixedly provided with a transmission flat gear 16 in a penetrating way, the inner wall of the supporting base 1 is rotatably provided with a first rotating rod 19, the driving flat gear 17 is meshed with the driving flat gear 16, the first rotating rod 19 is fixedly provided with a driving bevel gear 18, the top of the supporting base 1 is rotatably provided with a second rotating rod 21, the lower end of the second rotating rod 21 extends into the supporting base 1 and is fixedly provided with a driving bevel gear 20, the driving bevel gear 20 is meshed with the driving bevel gear 18, the upper end of the second rotating rod 21 is fixedly provided with a handle 22, and anti-skid grains are uniformly arranged on the handle 22.
When using, bury this insulating tube in proper order in ground and with bolt fixed connection well earlier, then rotate handle 22 in proper order, second bull stick 21 drives first bull stick 19 through bevel gear drive assembly and rotates, thereby first bull stick 19 drives two-way threaded rod 14 through the spur gear drive assembly and rotates and make sharp thorn pole 13 transversely pierce ground in order to guarantee that the pipeline is stable firm, outer glass steel protective housing 5 and 8 double-deck formula structural design of interior glass steel protective housing, the cushioning effect of cooperation cushion column 7 and buffer board 12, more shock-resistant and extrusion, polytetrafluoroethylene inoxidizing coating 6 and inside lining plastic layer 10 make this insulating tube possess good corrosion resisting property, long service life is longer, simple structure, and is convenient and practical.
Example 2
Referring to fig. 4, the embodiment of the present invention is different from embodiment 1 in that, further, in order to prevent the polytetrafluoroethylene protective layer 6 from being damaged due to the fact that the pipeline is squeezed by the stones, the polytetrafluoroethylene protective layer 6 is sleeved with the spiral protective sleeve 4, and the spiral protective sleeve 4 is made of a rubber material, so that the polytetrafluoroethylene protective layer 6 can be effectively prevented from being damaged by the stones, and the corrosion resistance of the pipeline is ensured to be normal and stable.
The working principle of the invention is as follows: when the heat-insulating pipe is used, the heat-insulating pipe is sequentially buried in the ground and fixedly connected by using bolts, then the handle 22 is sequentially rotated, the second rotating rod 21 drives the first rotating rod 19 to rotate through the bevel gear transmission component, the first rotating rod 19 drives the bidirectional threaded rod 14 to rotate through the flat gear transmission component, so that the sharp-pointed rod 13 transversely penetrates into the ground to ensure that the pipe is stable and firm, the outer glass fiber reinforced plastic protective shell 5 and the inner glass fiber reinforced plastic protective shell 8 are designed in a double-layer structure, the shock absorption effect of the buffer column 7 and the shock absorption plate 12 is matched, the shock resistance and the extrusion resistance are better, and the polytetrafluoroethylene protective layer 6 and the inner plastic layer 10 ensure that the heat-insulating pipe has good corrosion resistance, the service life is longer, the structure is simple, and the heat.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. An anti-corrosion type heat preservation pipe with a spiral sheath comprises a transmission steel pipe (11), and is characterized in that an inner plastic lining layer (10) is arranged on the inner wall of the transmission steel pipe (11), a heat preservation layer (9) is coated on the outer wall of the transmission steel pipe (11), an inner glass fiber reinforced plastic protection shell (8) is fixedly sleeved on the outer wall of the heat preservation layer (9), an outer glass fiber reinforced plastic protection shell (5) is fixedly sleeved on the inner glass fiber reinforced plastic protection shell (8), a certain gap exists between the outer glass fiber reinforced plastic protection shell (5) and the inner glass fiber reinforced plastic protection shell (8), a plurality of buffer columns (7) are fixedly arranged in the gap from left to right in a circumferential equidistant mode, and a polytetrafluoroethylene protection layer (6) is;
outer glass steel protective housing (5) bottom turns right the equidistance from a left side and is equipped with a plurality of support bases (1), supports base (1) and rotates through the bearing and install two-way threaded rod (14), and two movable block (15) are worn to be equipped with by the symmetry on two-way threaded rod (14), and the symmetry is inserted on support base (1) lateral wall and is equipped with two spine pole (13), and two spine pole (13) are close to the one end that supports base (1) center respectively with two movable block (15) fixed connection.
2. The corrosion-resistant heat-insulating pipe with the spiral sheath as claimed in claim 1, wherein the polytetrafluoroethylene protective layer (6) is sleeved with the spiral protective sleeve (4), and the spiral protective sleeve (4) is made of rubber.
3. The corrosion-resistant heat-insulating pipe with the spiral sheath as claimed in claim 1, wherein the two ends of the transmission steel pipe (11) are both fixedly provided with a connecting block (2), and the end faces of the connecting blocks (2) far away from the center of the transmission steel pipe (11) are both provided with a sealing ring (3).
4. The corrosion-resistant heat-preservation pipe with the spiral sheath as claimed in claim 1, wherein the heat-preservation layer (9) comprises polystyrene foam, heat-insulation soft felt, mineral wool board, foam heat-preservation board and polyester fiber board from inside to outside in sequence.
5. The corrosion-resistant heat-insulating pipe with the spiral sheath as claimed in claim 1, wherein the buffer column (7) comprises a sleeve and a support column, the support column is slidably inserted into the sleeve, and a shock-absorbing spring (23) is arranged between one end of the support column in the sleeve and the bottom of an inner cavity of the sleeve.
6. The corrosion-resistant heat-insulating pipe with the spiral sheath as claimed in any one of claims 1 to 5, wherein the bottom of the supporting base (1) is fixedly provided with a damping plate (12).
7. The corrosion-resistant insulated pipe with a spiral sheath of claim 1, a transmission flat gear (16) is fixedly arranged in the middle of the bidirectional threaded rod (14) in a penetrating way, a first rotating rod (19) is rotatably arranged on the inner wall of the supporting base (1), a driving flat gear (17) is fixedly arranged at one end of the first rotating rod (19) far away from the inner wall of the supporting base (1), the driving flat gear (17) is meshed with the driving flat gear (16), a driving bevel gear (18) is fixedly arranged on the first rotating rod (19), a second rotating rod (21) is rotatably arranged at the top of the supporting base (1), the lower end of the second rotating rod (21) extends into the supporting base (1) and is fixedly provided with a driving bevel gear (20), the driving bevel gear (20) is meshed with the transmission bevel gear (18), a handle (22) is fixedly arranged at the upper end of the second rotating rod (21), and anti-skid grains are uniformly arranged on the handle (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010059666.XA CN111237551A (en) | 2020-01-19 | 2020-01-19 | Anticorrosive type insulating tube with spiral sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010059666.XA CN111237551A (en) | 2020-01-19 | 2020-01-19 | Anticorrosive type insulating tube with spiral sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111237551A true CN111237551A (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010059666.XA Pending CN111237551A (en) | 2020-01-19 | 2020-01-19 | Anticorrosive type insulating tube with spiral sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111237551A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981250A (en) * | 2020-09-12 | 2020-11-24 | 上海晟昌实业有限公司 | High-temperature gas recovery pipeline |
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| CN207378314U (en) * | 2017-10-16 | 2018-05-18 | 浙江中尔阀门有限公司 | A kind of compound water heating pipe fittings |
| CN207527153U (en) * | 2017-11-22 | 2018-06-22 | 蒲靓春 | A kind of petroleum transportation pipeline with double-layer structure |
| CN207715928U (en) * | 2017-12-27 | 2018-08-10 | 唐山兴邦管道工程设备有限公司 | A kind of prefabricated direct-buried thermal insulation pipe with mounting bracket |
| CN108661639A (en) * | 2018-05-23 | 2018-10-16 | 毛建锋 | A kind of complexity difficulty mining bed scale automated mining device |
| CN208651845U (en) * | 2018-07-17 | 2019-03-26 | 浙江中房建筑设计研究院有限公司 | A kind of Novel warming siphunculus |
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| CN209082196U (en) * | 2018-10-19 | 2019-07-09 | 苏州汪永亨丝绸科技文化有限公司 | A kind of silk refining dye air-drying device |
| CN209818961U (en) * | 2019-03-01 | 2019-12-20 | 邢台市焱森防腐保温工程有限公司 | Energy-concerving and environment-protective prefabricated insulating tube of direct burial of ultralow heat waste |
| CN209819047U (en) * | 2019-03-01 | 2019-12-20 | 邢台市焱森防腐保温工程有限公司 | Energy-concerving and environment-protective prefabricated insulating tube of direct-burried |
-
2020
- 2020-01-19 CN CN202010059666.XA patent/CN111237551A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207378314U (en) * | 2017-10-16 | 2018-05-18 | 浙江中尔阀门有限公司 | A kind of compound water heating pipe fittings |
| CN207527153U (en) * | 2017-11-22 | 2018-06-22 | 蒲靓春 | A kind of petroleum transportation pipeline with double-layer structure |
| CN207715928U (en) * | 2017-12-27 | 2018-08-10 | 唐山兴邦管道工程设备有限公司 | A kind of prefabricated direct-buried thermal insulation pipe with mounting bracket |
| CN108661639A (en) * | 2018-05-23 | 2018-10-16 | 毛建锋 | A kind of complexity difficulty mining bed scale automated mining device |
| CN208651845U (en) * | 2018-07-17 | 2019-03-26 | 浙江中房建筑设计研究院有限公司 | A kind of Novel warming siphunculus |
| CN209082196U (en) * | 2018-10-19 | 2019-07-09 | 苏州汪永亨丝绸科技文化有限公司 | A kind of silk refining dye air-drying device |
| CN208889232U (en) * | 2018-11-02 | 2019-05-21 | 河南多普电子科技有限公司 | A kind of Internet of Things outdoor advertisement machine |
| CN209818961U (en) * | 2019-03-01 | 2019-12-20 | 邢台市焱森防腐保温工程有限公司 | Energy-concerving and environment-protective prefabricated insulating tube of direct burial of ultralow heat waste |
| CN209819047U (en) * | 2019-03-01 | 2019-12-20 | 邢台市焱森防腐保温工程有限公司 | Energy-concerving and environment-protective prefabricated insulating tube of direct-burried |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981250A (en) * | 2020-09-12 | 2020-11-24 | 上海晟昌实业有限公司 | High-temperature gas recovery pipeline |
| CN111981250B (en) * | 2020-09-12 | 2022-02-22 | 上海晟昌实业有限公司 | High-temperature gas recovery pipeline |
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Application publication date: 20200605 |