CN206222625U - Chilled water pipe system outside air-conditioning room - Google Patents
Chilled water pipe system outside air-conditioning room Download PDFInfo
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- CN206222625U CN206222625U CN201621107154.1U CN201621107154U CN206222625U CN 206222625 U CN206222625 U CN 206222625U CN 201621107154 U CN201621107154 U CN 201621107154U CN 206222625 U CN206222625 U CN 206222625U
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- pipe
- chilled water
- water pipe
- major diameter
- minor diameter
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Abstract
The utility model discloses chilled water pipe system outside air-conditioning room, including major diameter chilled water pipe and minor diameter chilled water pipe, part major diameter chilled water pipe is docked by major diameter elbow bend or three-way pipe, part minor diameter chilled water pipe is docked by minor diameter elbow bend or three-way pipe, part major diameter chilled water pipe is docked by big reducer pipe or small reducer pipe, part minor diameter chilled water pipe is connected by three-way pipe with major diameter chilled water pipe, major diameter chilled water pipe, minor diameter chilled water pipe, major diameter elbow bend, three-way pipe, minor diameter elbow bend, the outer surface of big reducer pipe and small reducer pipe is enclosed with adiabator layer.By using the soft pliable folding endurance of fire retardant B grades of aluminium foil flexible foamed rubber-plastic insulation material, ensure that the splicing density of adiabator layer and the seam crossing of pipe, thermal conductivity factor≤0.033W/m K (0 °C), possesses good heat-proof quality, the temperature consumption of circulated refrigerated water is reduced, indoor refrigerating efficiency is improved.
Description
Technical field
The utility model is related to chilled water pipe system outside a kind of air-conditioning room.
Background technology
The present more and more too busy to get away air-conditioning of urban life, the raising with technical merit and the weight to " environmental protection of four section one "
Depending on more and more large public buildings are all using central air conditioner system as central cooling（Heat）.Its power consumption accounts for building
The 50% of the total power consumption of thing.Air-conditioner set is typically all disposed within building terrace, in outdoor adverse circumstances, exposes to the sun and rain, this
When, among in just attaching most importance in the insulation of the outdoor aortic air-conditioner set chilled water pipe of cooling.However, partial freeze water
Guan Wei lays insulation material, causes low-temperature receiver to be consumed in transportation again, although or laid insulation material, lack good
Good protective layer is protected, and is caused insulation material premature aging, is come off, the efficiency of the same indoor refrigeration of influence.
Due to needing preprocessing, in-site installation, thin portion repairing ability to chilled water pipe insulation material and protection materials very
It is positive to complete chilled water pipe heat-insulation system construction outside air-conditioning room, due to lacking systematic guidance, cause chilled water pipe outside air-conditioning room
Heat-insulation system low construction efficiency, need to put into more manpower and materials, also directly affect subsequent handling construction, or even influence construction
Duration.
Utility model content
The purpose of this utility model, is to provide chilled water pipe system outside a kind of air-conditioning room.
The solution that the utility model solves its technical problem is：Chilled water pipe system outside air-conditioning room, including many big
Diameter chilled water pipe and many minor diameter chilled water pipes, the part major diameter chilled water pipe by major diameter elbow bend or
Three-way pipe is docked, and the part minor diameter chilled water pipe is docked by minor diameter elbow bend or three-way pipe, and part major diameter is cold
Freeze water pipe to be docked by big reducer pipe or small reducer pipe, the part minor diameter chilled water pipe is freezed by three-way pipe with major diameter
Water pipe is connected, the major diameter chilled water pipe, minor diameter chilled water pipe, major diameter elbow bend, three-way pipe, minor diameter quarter bend
The outer surface of head, big reducer pipe and small reducer pipe is enclosed with adiabator layer, the abutment joint of the same adiabator layer
Gap is spliced by glue, and two adjacent adiabator layers are spliced by glue.
Used as the further improvement of above-mentioned technical proposal, the major diameter chilled water pipe or/and minor diameter chilled water pipe are worn
It is fixed on flooring or wall by fixed structure when crossing flooring or wall, the fixed structure includes being embedded in flooring or wall
Sleeve on the through hole of body, the layer of mineral wool positioned at sleeve interior surface and the fire collar by sleeve closed at both ends, the fire collar
Part be embedded into the adiabator layer of major diameter chilled water pipe or/and minor diameter chilled water pipe.
As the further improvement of above-mentioned technical proposal, the major diameter chilled water pipe or/and minor diameter being located outside
Chilled water pipe is fixed on wall or flooring by supporting construction, and the supporting construction includes pacifying by bolt and Shockproof rubber
Support frame on wall or flooring, is disposed with least one for fixing major diameter chilled water pipe or small on support frame as described above
The pipe collar of diameter chilled water pipe, two end faces of the pipe collar are disposed with fire prevention support code, the pipe collar and major diameter chilled water pipe
Or sleeve and adiabator layer are disposed between minor diameter chilled water pipe.
Used as the further improvement of above-mentioned technical proposal, the adiabator layer of the major diameter elbow bend includes the 3rd
Pipe, splicing tubes and the 4th pipe, one end of the 3rd pipe are provided with 22.5 ° of otch, and the two ends of splicing tubes are respectively arranged with
22.5 ° of otch, one end of the 4th pipe is provided with 22.5 ° of otch, and 22.5 ° of otch of the 3rd pipe and the 4th pipe are respectively and splicing
22.5 ° of otch docking of pipe and the outer surface by being covered in major diameter elbow bend after glue fixation.
Used as the further improvement of above-mentioned technical proposal, the adiabator layer of the minor diameter elbow bend includes the first pipe
Managed with second, one end of first pipe is provided with 45 ° of otch, and one end of second pipe is provided with 45 ° of otch, described first
45 ° of otch docking of 45 ° of otch and the second pipe of pipe and the outer surface by being covered in minor diameter elbow bend after glue fixation.
Used as the further improvement of above-mentioned technical proposal, the adiabator layer of the three-way pipe includes the 5th pipe and the 6th
Pipe, the medium position of the 5th pipe is disposed with the circular port that a central tube for allowing three-way pipe passes through and outside circular port
The circular joint of side, is disposed with the C-shaped C-shaped otch in longitudinal cross-section, the C-shaped otch of the 6th pipe on one end of the 6th pipe
Circular joint docking with the 5th pipe and the outer surface by being covered in three-way pipe after glue fixation.
Used as the further improvement of above-mentioned technical proposal, the adiabator layer of the big reducer pipe passes through fan-shaped sheet material and splices
And formed by glue fixation, the radius of inside arc is equal to the external diameter of small end in big reducer pipe, the fan in the fan-shaped sheet material
The radius of lateral arcs is equal to the external diameter at big end in big reducer pipe in shape sheet material.
Used as the further improvement of above-mentioned technical proposal, the adiabator layer of the small reducer pipe includes the 7th pipe, described
The some articles of small cone tanks of outer imperial palace are disposed with one end of 7th pipe, the two side of the same cone tank is solid by glue
It is covered on the small end of small reducer pipe after fixed, the other end of the 7th pipe is covered on the big end of small reducer pipe.
Used as the further improvement of above-mentioned technical proposal, the adiabator layer is aluminium foil flexible foamed rubber-plastic component.
As the further improvement of above-mentioned technical proposal, the major diameter chilled water pipe, minor diameter chilled water pipe, major diameter
The adiabator layer outside of elbow bend, three-way pipe, minor diameter elbow bend, big reducer pipe and small reducer pipe is disposed with set
Cylinder.
The beneficial effects of the utility model are：The utility model is incubated by using fire retardant B grades of aluminium foil flexible foamed rubber-plastic
The soft pliable folding endurance of material, it is ensured that the splicing density of the seam crossing of adiabator layer and pipe, thermal conductivity factor≤0.033W/
M K (0 °C), possess good heat-proof quality, reduce the temperature consumption of circulated refrigerated water, improve indoor refrigerating efficiency.Thermal insulating material
Bed of material layer is installed and after acceptance(check), the insulation material according to chilled water pipe outsourcing rub after dimension D, and field measurement actual quantities
As implementation basis, the processing of sleeve is carried out to different component, its geomery and thin portion are pre-designed, and carried out accurate
Processing and fabricating.Adiabator layer outer surface sets the construction of sleeve, lowers exposed chilled water pipe insulation material because in building day
Face such as is exposed to the sun and rain at the risk of adverse circumstances destruction, reduces maintenance cost, it is ensured that construction quality physical dimension is regular, perception matter
Amount works well.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in the utility model embodiment, below will be to needed for embodiment description
The accompanying drawing to be used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, rather than complete
Portion's embodiment, those skilled in the art on the premise of not paying creative work, can also obtain it according to these accompanying drawings
His design and accompanying drawing.
Fig. 1 is the structural representation of major diameter chilled water pipe or minor diameter chilled water pipe through wall in the utility model；
Fig. 2 is the structural representation of major diameter chilled water pipe or minor diameter chilled water pipe through flooring in the utility model；
Fig. 3 is the structural representation of supporting construction in the utility model；
Structural representation when Fig. 4 is major diameter elbow bend outsourcing adiabator layer in the utility model；
Structural representation when Fig. 5 is the utility model medium-small diameter elbow bend outsourcing adiabator layer；
Structural representation when Fig. 6 is three-way pipe outsourcing adiabator layer in the utility model；
Fig. 7 is the structural representation of big reducer pipe and fan-shaped sheet material in the utility model；
Structural representation when Fig. 8 is small reducer pipe outsourcing adiabator layer in the utility model.
Specific embodiment
The technique effect of design of the present utility model, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing
Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of embodiment of the present utility model, rather than whole embodiments, based on embodiment of the present utility model, the skill of this area
The other embodiment that art personnel are obtained on the premise of not paying creative work, belongs to the model of the utility model protection
Enclose.In addition, all connection/annexations being previously mentioned in text, not singly refer to that component directly connects, and refer to can be according to specific reality
Situation is applied, more excellent draw bail is constituted by adding or reducing couple auxiliary.
1~Fig. 8 of reference picture, chilled water pipe system outside air-conditioning room, including many major diameter chilled water pipes and many it is small straight
Footpath chilled water pipe, the part major diameter chilled water pipe is docked by major diameter elbow bend or three-way pipe, and part is described small straight
Footpath chilled water pipe is docked by minor diameter elbow bend or three-way pipe, and part major diameter chilled water pipe is by big reducer pipe or small change
Footpath pipe docking, the part minor diameter chilled water pipe is connected by three-way pipe with major diameter chilled water pipe, the major diameter freezing
Water pipe, minor diameter chilled water pipe, major diameter elbow bend, three-way pipe, minor diameter elbow bend, big reducer pipe and small reducer pipe
Outer surface be enclosed with adiabator layer 1, the butt seam of the same adiabator layer 1 is spliced by glue, adjacent
Two adiabator layers 1 are spliced by glue.
1. using container is shaken before glue, make glue uniform, in actual installation, with canister glue preventing it from volatilizing
It is too fast, if it is necessary, can must pour into canister big tank use, the used time is not by Jar opening sealer.
2. not cementing when, brush should not be immersed in glue.
3. should be ensured that uniform and thin when the material surface brushing glue of bonding is needed, treat that glue is cured to and touch
Tack-free is best bond effect.Glue nature drying time is 3-8 minutes, and the length of time depends on the temperature of construction environment
And relative humidity.
If 4. glue has been parched, gluing to be bonded again again.If dry glue exceedes twice, it is necessary to which old glue is removed,
Again can gluing bonding.
5. the consumption of glue：Every liter of glue can install 3-4 square metres of sheet material or 15-18 mitron materials.
6. the use scope of glue is：5℃-70℃.
For major diameter chilled water pipe and minor diameter chilled water pipe outer surface parcel adiabator layer 1, one section is taken properly
The opening tubing bag of length applies gluing on major diameter chilled water pipe or minor diameter chilled water pipe at the opening of opening tubing
Water, after after glue desiccation, first the two ends of bonding opening tubing, are adhered by the midpoint of tubing, again viscous from two sections to centre afterwards
Close, until all sealings
It is further used as preferred embodiment, the major diameter chilled water pipe or/and minor diameter chilled water pipe pass through building
It is fixed on flooring or wall by fixed structure when face or wall, the fixed structure includes being embedded in flooring or wall
Sleeve 3 on through hole, the layer of mineral wool 2 positioned at the inner surface of sleeve 3 and the fire collar 4 by the closed at both ends of sleeve 3, the fire collar
4 part is embedded into the adiabator layer 1 of major diameter chilled water pipe or/and minor diameter chilled water pipe.
It is further used as the major diameter chilled water pipe or/and the minor diameter freezing preferred embodiment, being located outside
Water pipe is fixed on wall or flooring by supporting construction, and the supporting construction includes being arranged on by bolt and Shockproof rubber
Support frame 5 on wall or flooring, is disposed with least one for fixing major diameter chilled water pipe or small straight on support frame as described above 5
The pipe collar 6 of footpath chilled water pipe, two end faces of the pipe collar 6 are disposed with fire prevention support code 7, the pipe collar 6 and major diameter chilled water
Sleeve 3 and adiabator layer 1 are disposed between pipe or minor diameter chilled water pipe.
Be further used as preferred embodiment, the adiabator layer 1 of the major diameter elbow bend include the 3rd pipe 8,
The pipe 10 of splicing tubes 9 and the 4th, one end of the 3rd pipe 8 is provided with 22.5 ° of otch 11, and the two ends of splicing tubes 9 are respectively provided with
There are 22.5 ° of otch 11, one end of the 4th pipe 10 is provided with 22.5 ° of otch 11,22.5 ° of the 3rd pipe 8 and the 4th pipe 10 are cut
Mouth 11 docks with 22.5 ° of otch 11 of splicing tubes 9 and the appearance of major diameter elbow bend is covered in after glue is fixed respectively
Face.
It is further used as preferred embodiment, the adiabator layer 1 of the minor diameter elbow bend includes the first pipe 12
With the second pipe 13, one end of first pipe 12 is provided with 45 ° of otch 14, and one end of second pipe 13 is provided with 45 ° of otch
14,45 ° of otch 14 of the pipe 13 of 45 ° of otch 14 and second of first pipe 12 are docked and are covered in after glue is fixed small straight
The outer surface of footpath elbow bend.
It is further used as preferred embodiment, the adiabator layer 1 of the three-way pipe includes the 5th pipe 15 and the 6th pipe
16, the medium position of the 5th pipe 15 is disposed with the circular port that a central tube for allowing three-way pipe passes through and positioned at circular port
The circular joint in outside, is disposed with the C-shaped C-shaped otch in longitudinal cross-section, the C of the 6th pipe 16 on one end of the 6th pipe 16
The circular joint docking of shape otch and the 5th pipe 15 and the outer surface by being covered in three-way pipe after glue fixation.
It is further used as preferred embodiment, the adiabator layer 1 of the big reducer pipe passes through fan-shaped sheet material 17 and splices
And formed by glue fixation, the radius of inside arc is equal to the external diameter of small end in big reducer pipe in the fan-shaped sheet material 17, described
The radius of lateral arcs is equal to the external diameter at big end in big reducer pipe in fan-shaped sheet material 17.
It is further used as preferred embodiment, the adiabator layer 1 of the small reducer pipe includes the 7th pipe 18, described the
The some small cone tanks of outer imperial palace 19 are disposed with one end of seven pipes 18, the two side of the same cone tank 19 passes through glue
It is covered in after hydropexis on the small end of small reducer pipe, the other end of the 7th pipe 18 is covered on the big end of small reducer pipe.Selection with
The 7th consistent pipe 18 of small reducer pipe maximum gauge, and cut required length；Measurement, and make marks to ensure on the 7th pipe 18
Small end caliber is consistent with small reducer pipe minimum diameter after 7th pipe 18 is pruned；With cracking by top is along marking for the 7th pipe 18
Note cuts out four pieces of cone tanks of same size 19, is bonded cone tank 19 with glue, only retains open seam；Treat that cone tank 19 is cemented
Afterwards, tubing is enclosed within reducer pipe, is glued with glue and interface, and it is Nian Jie with small reducer pipe.
It is further used as preferred embodiment, the adiabator layer 1 is aluminium foil flexible foamed rubber-plastic component.
It is further used as preferred embodiment, the major diameter chilled water pipe, minor diameter chilled water pipe, major diameter right angle
The outside of adiabator layer 1 of elbow, three-way pipe, minor diameter elbow bend, big reducer pipe and small reducer pipe is disposed with sleeve 3.
Sleeve 3 is made up of thin-walled galvanized steel plain sheet or aluminium sheet.The thickness of sleeve 3 is 1 millimeter.
By using the soft pliable folding endurance of fire retardant B grades of aluminium foil flexible foamed rubber-plastic insulation material, it is ensured that insulation material
The splicing density of the seam crossing of layer 1 and pipe, thermal conductivity factor≤0.033W/m K (0 °C) possesses good heat-proof quality, reduces
The temperature consumption of circulated refrigerated water, improves indoor refrigerating efficiency.1 layer of adiabator layer is installed and after acceptance(check), according to freezing
The insulation material of water pipe outsourcing rub after dimension D, and field measurement actual quantities carries out sleeve as implementation basis to different component
3 processing, its geomery and thin portion are pre-designed, and carry out accurate processing and fabricating.The outer surface of adiabator layer 1 is set
The construction of sleeve 3, lowers the wind that exposed chilled water pipe insulation material is destroyed by the adverse circumstances such as expose to the sun and rain in building terrace
Danger, reduces maintenance cost, it is ensured that construction quality physical dimension is regular, and impression quality works well.
Above is better embodiment of the present utility model is illustrated, but the invention is not limited to institute
Embodiment is stated, those of ordinary skill in the art can also make a variety of being equal on the premise of without prejudice to the utility model spirit
Modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (10)
1. chilled water pipe system outside air-conditioning room, it is characterised in that：It is cold including many major diameter chilled water pipes and many minor diameters
Freeze water pipe, the part major diameter chilled water pipe is docked by major diameter elbow bend or three-way pipe, and the part minor diameter is cold
Freeze water pipe to be docked by minor diameter elbow bend or three-way pipe, part major diameter chilled water pipe passes through big reducer pipe or small reducer pipe
Docking, the part minor diameter chilled water pipe is connected by three-way pipe with major diameter chilled water pipe, the major diameter chilled water pipe,
Outside minor diameter chilled water pipe, major diameter elbow bend, three-way pipe, minor diameter elbow bend, big reducer pipe and small reducer pipe
Adiabator layer is coated with, the butt seam of the same adiabator layer is spliced by glue, two adjacent guarantors
Adiabator layer is spliced by glue.
2. chilled water pipe system outside air-conditioning room according to claim 1, it is characterised in that：The major diameter chilled water pipe
Or/and minor diameter chilled water pipe pass through flooring or wall when be fixed on flooring or wall by fixed structure, the fixation
Structure includes being embedded in the sleeve on the through hole of flooring or wall, the layer of mineral wool positioned at sleeve interior surface and by the end seal of sleeve two
The fire collar for closing, the part of the fire collar is embedded into the adiabator layer of major diameter chilled water pipe or/and minor diameter chilled water pipe
It is interior.
3. chilled water pipe system outside air-conditioning room according to claim 2, it is characterised in that：The major diameter being located outside
Chilled water pipe or/and minor diameter chilled water pipe are fixed on wall or flooring by supporting construction, and the supporting construction includes logical
The support frame that bolt and Shockproof rubber are arranged on wall or flooring is crossed, at least one is disposed with support frame as described above for solid
Determine the pipe collar of major diameter chilled water pipe or minor diameter chilled water pipe, two end faces of the pipe collar are disposed with fire prevention support code, described
Sleeve and adiabator layer are disposed between pipe collar and major diameter chilled water pipe or minor diameter chilled water pipe.
4. chilled water pipe system outside air-conditioning room according to claim 1, it is characterised in that：The major diameter elbow bend
Adiabator layer includes the 3rd pipe, splicing tubes and the 4th pipe, and one end of the 3rd pipe is provided with 22.5 ° of otch, splicing tubes
Two ends be respectively arranged with 22.5 ° of otch, one end of the 4th pipe is provided with 22.5 ° of otch, the 3rd pipe and the 4th pipe
22.5 ° of otch dock with 22.5 ° of otch of splicing tubes and the outer of major diameter elbow bend are covered in after glue is fixed respectively
Surface.
5. chilled water pipe system outside air-conditioning room according to claim 1, it is characterised in that：The minor diameter elbow bend
Adiabator layer includes the first pipe and the second pipe, and one end of first pipe is provided with 45 ° of otch, and one end of second pipe sets
45 ° of otch are equipped with, 45 ° of otch of first pipe and 45 ° of otch of the second pipe are docked and are covered in after glue is fixed small
The outer surface of diameter elbow bend.
6. chilled water pipe system outside air-conditioning room according to claim 1, it is characterised in that：The insulation material of the three-way pipe
Layer includes the 5th pipe and the 6th pipe, and the medium position of the 5th pipe is disposed with the circle that a central tube for allowing three-way pipe passes through
Hole and the circular joint on the outside of circular port, are disposed with the C-shaped C-shaped in longitudinal cross-section and cut on one end of the 6th pipe
Mouthful, the C-shaped otch of the 6th pipe and the circular joint of the 5th pipe dock and the appearance of three-way pipe are covered in after glue is fixed
Face.
7. chilled water pipe system outside air-conditioning room according to claim 1, it is characterised in that：The thermal insulating material of the big reducer pipe
The bed of material is passed through fan-shaped sheet material and splices and formed by glue fixation, and the radius of inside arc is equal to big reducer pipe in the fan-shaped sheet material
The external diameter of middle small end, the radius of the fan-shaped sheet material China and foreign countries side arc is equal to the external diameter at big end in big reducer pipe.
8. chilled water pipe system outside air-conditioning room according to claim 1, it is characterised in that：The thermal insulating material of the small reducer pipe
The bed of material includes the 7th pipe, and some articles of small cone tanks of outer imperial palace, the same taper are disposed with one end of the 7th pipe
The two side of groove is covered on the small end of small reducer pipe after glue is fixed, and the other end of the 7th pipe is covered in small reducer pipe
On big end.
9. chilled water pipe system outside the air-conditioning room according to any one of claim 1 ~ 8, it is characterised in that：The insulation material
Layer is aluminium foil flexible foamed rubber-plastic component.
10. chilled water pipe system outside the air-conditioning room according to any one of claim 1 ~ 8, it is characterised in that：The major diameter
Chilled water pipe, minor diameter chilled water pipe, major diameter elbow bend, three-way pipe, minor diameter elbow bend, big reducer pipe and small change
The adiabator layer outside of footpath pipe is disposed with sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107154.1U CN206222625U (en) | 2016-09-30 | 2016-09-30 | Chilled water pipe system outside air-conditioning room |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621107154.1U CN206222625U (en) | 2016-09-30 | 2016-09-30 | Chilled water pipe system outside air-conditioning room |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206222625U true CN206222625U (en) | 2017-06-06 |
Family
ID=58782395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621107154.1U Expired - Fee Related CN206222625U (en) | 2016-09-30 | 2016-09-30 | Chilled water pipe system outside air-conditioning room |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206222625U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531295A (en) * | 2021-07-29 | 2021-10-22 | 中国电建集团河南工程有限公司 | Auxiliary device and method for construction of large-diameter pipeline elbow heat-insulating layer |
-
2016
- 2016-09-30 CN CN201621107154.1U patent/CN206222625U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531295A (en) * | 2021-07-29 | 2021-10-22 | 中国电建集团河南工程有限公司 | Auxiliary device and method for construction of large-diameter pipeline elbow heat-insulating layer |
| CN113531295B (en) * | 2021-07-29 | 2024-03-15 | 中国电建集团河南工程有限公司 | Auxiliary device and method for construction of large-caliber pipeline elbow heat-insulating layer |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170606 Termination date: 20200930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |