CN203453713U - Hoop for large-sized chrome molybdenum steel reactor composite heat-preservation structure - Google Patents
Hoop for large-sized chrome molybdenum steel reactor composite heat-preservation structure Download PDFInfo
- Publication number
- CN203453713U CN203453713U CN201320486059.7U CN201320486059U CN203453713U CN 203453713 U CN203453713 U CN 203453713U CN 201320486059 U CN201320486059 U CN 201320486059U CN 203453713 U CN203453713 U CN 203453713U
- Authority
- CN
- China
- Prior art keywords
- reactor
- arc
- wall
- hoop
- arc branch
- 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 - Lifetime
Links
Images
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model discloses a hoop for a large-sized chrome molybdenum steel reactor composite heat-preservation structure, belongs to the field of chemical engineering tower outer wall heat preservation equipment, and particularly relates to a hoop connecting an inner back strip at the upper portion of the outer wall of a reactor and an inner back strip at the lower portion of the outer wall of the reactor. The hoop for the large-sized chrome molybdenum steel reactor composite heat-preservation structure comprises a plurality of arc branch portions (1) and connecting devices, the arc branch portions (1) are in butt joint with one another in an end-to-end mode at intervals to form a circular ring shape, and each connecting device is movably connected with the end portions of two adjacent arc branch portions (1). When the outer wall of the reactor (3) is expanded, the arc branch portions (1) slide along sleeves (2), and the diameter of the hoop is enlarged; when the outer wall of the reactor (3) is cooled and shrinks, the arc branch portions (1) automatically shrink under the action of gravity of the inner back strips along the sleeves (2), and the diameter of the hoop is reduced. The hoop for the large-sized chrome molybdenum steel reactor composite heat-preservation structure has the advantages of being capable of adapting to the thermal expansion and cold shrinkage of the outer wall of the reactor (3), simple in structure and the like.
Description
Technical field
Large-scale Cr-Mo steel reactor compound heat preservation structure garter spring, belongs to chemical tower outer wall heat-preserving equipment field, is specifically related in a kind of coupled reaction device outer wall top the garter spring of braces in braces and bottom.
Background technique
Reactor is thermal fatigue pressurized container, thereby due to its design pressure and the higher variation of can expanding with heat and contract with cold of temperature, therefore need to carry out outer insulation protection to its outer surface, the model utility 201020530512.6 of claimant's application discloses a kind of formula insulating structure of putting on a suit of armour, adopt band structure in unjointed steel, need to be at the outer wall welding prefabricated component of reactor, solved the formation of crack problem because producing at wall outer wall welding prefabricated component, but this interior braces is whole piece extends to reactor bottom from reactor head always, and pass through spring straining, maximization along with process units, brought the maximization of reactor apparatus and complicated, wall outer tube member and opening are many, some current wall of reactor outward openings have reached hundreds of, and along with the needs of modern crafts, when reactor becomes large chap, outside need welds a plurality of prefabricated components, the existing this interior braces insulating structure of formula of putting on a suit of armour cannot be dodged opening and the prefabricated component in wall of reactor, cannot meet the insulation demand of this reactor.
Large-scale Cr-Mo steel reactor diameter can reach 10m, highly reach 60m, open amount is numerous, because needing interleaved openings, technique is distributed in the outer wall of reactor, this just causes interior braces to be directly pulled to reactor lower end from reactor head, for dodging opening, make opening be exposed to insulating structure, interior braces must be longitudinally staggered at opening, for guaranteeing heat insulation effect, interior braces requires to be close to reactor outer wall, all can there is very large variation in reactor in use temperature, this has just caused reactor outer wall to expand with heat and contract with cold, interior braces must be with the activity of expanding with heat and contract with cold of reactor outer wall in joint, keep being close to the outer wall of reactor always, can transmit simultaneously, pulling force in lower between braces, the device that also there is no at present a kind of effective head it off.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, a kind of large-scale Cr-Mo steel reactor compound heat preservation structure garter spring can adaptive response device outer wall expanding with heat and contract with cold is provided.
The utility model solves the technological scheme that its technical problem adopts: this large-scale Cr-Mo steel reactor compound heat preservation structure garter spring, it is characterized in that: comprise a plurality of arc branches and connection set, the interval docking of a plurality of arc branch's head and the tail forms circular, and connection set is flexibly connected the end of adjacent two arc branches.
The concentric arc shrouds of described connection set Wei Yu arc branch, sleeve pipe is actively set on the head and the tail end of adjacent two arc branches.
Described arc branch cross section is circular.
The described arc head and the tail interval 4～10cm of branch.
The concentric arc-shaped connecting rod of described connection set Wei Yu arc branch, arc branch two ends hollow, connecting rod is arranged in the head and the tail end of adjacent two arc branch hollows.
Compared with prior art, the beneficial effect that the large-scale Cr-Mo steel reactor of the utility model compound heat preservation structure has with garter spring is:
1, garter spring is divided into a plurality of arc branch, when reactor outer wall expands, arc branch slides along sleeve pipe, it is large that garter spring diameter becomes, during the cooling contraction of reactor outer wall, arc branch automatically shrinks along sleeve pipe under interior braces Action of Gravity Field, garter spring reduced, and what make that garter spring can adaptive response device outer wall expands with heat and contract with cold;
2, simple in structure, easy to operate, the utility model only need to utilize sleeve pipe that arc branch cover is connected, and does not need welding, simple in structure, simple to operate, is convenient to implement insulation on large-scale reactor.
Accompanying drawing explanation
Fig. 1 is the structural representation of garter spring for the large-scale Cr-Mo steel reactor of the utility model compound heat preservation structure.
Fig. 2 is the partial sectional view schematic diagram at A place in Fig. 1.
Fig. 3 is the structural representation of reactor.
Fig. 4 is the expansion schematic diagram at B place in Fig. 3.
Fig. 5 is the side view schematic diagram of Fig. 4.
Fig. 6 is the schematic diagram of bar for line.
Fig. 7 is the partial sectional view schematic diagram at C place in Fig. 3.
Fig. 8 is the structural representation of bracing ring.
Fig. 9 is the utility model embodiment 2 schematic diagram.
Figure 10 is the partial sectional view schematic diagram at D place in Fig. 9.
Wherein: 1, braces 6, thermal insulating material 7, bar for line 8, steel wire 9, dunnage 10, protective layer 11, dunnage spring 12, protective layer band 13, suspender 14, steel wire band 15, connecting rod in braces 5, bottom in arc branch 2, sleeve pipe 3, reactor 301, opening 302, straight tube 4, top.
Embodiment
Fig. 1 ~ 8th, most preferred embodiment of the present utility model, is described further with garter spring below in conjunction with 1 ~ 10 pair of large-scale Cr-Mo steel reactor of the utility model compound heat preservation structure of accompanying drawing.
With reference to accompanying drawing 1～2: this garter spring comprises a plurality of concentric arc branches 1 and sleeve pipe 2, a plurality of arc branch 1 head and the tail interval arranges and forms an annular, arc branch 1 cross section is circular, sleeve pipe 2 is actively set on the head and the tail end of adjacent two arc branches 1, concrete span determines according to reactor 3 self size, and the utility model is selected 5～8cm according to reactor 3 diameter 10m.Garter spring falls under the effect of self gravitation, because each arc branch 1 is that interval is movable, arranges, and runs into reactor 3 outer wall resistances.Garter spring can be clamped on the outer wall of reactor 3, and in reactor 3 is used, when outer wall expands along with temperature raises, each arc branch 1 can be with reactor 3 outer wall free expansions in sleeve pipe 2, keep fitting tightly of interior braces and reactor 3 outer walls always, when temperature reduces Shi， arc branch 1, under interior braces Action of Gravity Field, shrink, guarantee heat insulation effect, overcome the problem that reactor 3 expands with heat and contract with cold.
With reference to Fig. 3, interior braces is longitudinally layed in reactor 3 outer walls, on reactor 3 outer walls, offer a plurality of openings 301, because needing opening 301, technique is interspersed, interior braces is longitudinally divided in top braces 5 in braces 4 and bottom, in top, braces 4 upper ends are fixedly connected on the retaining ring of reactor 3 upper ends, in top, in braces 4 and bottom, braces 5 is longitudinally cross-linked by the circular garter spring being enclosed within on reactor 3 outer walls, in bottom, braces 5 lets droop and drops down onto reactor 3 bottoms by self gravitation, opening 301 is distributed in the middle part of reactor 3 mostly, so braces 5 is longitudinally divided into again multistage in bottom, by garter spring, be longitudinally cross-linked, braces position in can freely converting according to opening 301 positions.
In top, braces 4 is longitudinally divided into multistage, by garter spring, longitudinally connect, by 4 segmentations of braces in top, material therefor is relatively little, be convenient to make interior braces, in top topmost, the garter spring of braces 4 lower ends is enclosed within straight tube 302 places at reactor 3 tops, can further reduce the load-carrying load of retaining ring, the working life of improving equipment.
With reference to Fig. 4～5, interior back band ends is walked around stacked together after garter spring and is bolted to connection, and interior braces and garter spring are fixed together.In top, braces 4 is connected to the different position of garter spring with braces in bottom 5 according to the position of opening 301, being longitudinally interspersed of braces in realizing, and garter spring can transmit in top the longitudinal force of braces 5 in braces 4 and bottom, makes interior braces be close to the outer wall of reactor 3.
With reference to Fig. 6～7, thermal insulating material 6 is fixed on interior braces by bar for line 7, and thermal insulating material 6 outsides are provided with protective layer 10.Bar for line 7 is E shape, a plurality of nail pins are along the radially setting of reactor 3, a plurality of nail pins are connected as one by the joint of arc, the joint of arc is laterally fixedly connected with braces in two or more along reactor 3 outer walls, the quantity of bar for line 7 nail pins, according to the distribution situation setting of interior braces, can be selected 2～8.Thermal insulating material 6 is pricked to bar for line 7, can prevent the downward landing of thermal insulating material 6 gravitate, extends the working life of thermal insulating material 6.
With reference to Fig. 7～8; between thermal insulating material 6 and protective layer 10, be provided with layer of steel wire net 8; the joint of steel wire 8 is fixedly connected with; and utilize steel wire band 14 that steel wire 8 is tightened to the outside at thermal insulating material 6; thermal insulating material 6 elasticity are poor; in the process of expanding with heat and contract with cold at reactor; thermal insulating material 6 is easily softened; cause thermal insulating material 6 to be torn; steel wire 8 is effectively bundled together thermal insulating material 6; prevent that thermal insulating material 6 from breaking in the process of expanding with heat and contract with cold, improve the working life of thermal insulating material 6, high insulating effect.
Protective layer 10 comprises aluminium skin and corrugated sheet, and aluminium skin is fixed on the curved end of reactor 3, and corrugated sheet is fixed on the middle part direct tube section of reactor 3.Corrugated sheet intensity is large, and easily downstream, but the curved end that it cannot adaptive response device 3, therefore adopt aluminium skin at curved end, also can adopt galvanized sheet iron, prevents from getting rusty.
On interior braces, longitudinal separation is provided with bracing ring, bracing ring has the dunnage 9 of a plurality of arcs to connect and compose, the longitudinal cross-section of dunnage 9 is L shaped, dunnage 9 vertical portions are laterally fixedly connected with two interior braces, thermal insulating material 6 is fixedly supported on the horizontal part of dunnage 9, last minute of reactor 3 outer walls can be transferred to by the weight of thermal insulating material 6 in dunnage 9 vertical portions, effectively alleviated the load-carrying load of retaining ring and top garter spring, improved the life cycle of insulating structure.
Between adjacent shore plates 9 on same bracing ring, by dunnage spring 11, connect, dunnage spring 11 is torsion spring, in the process that makes dunnage 9 extend out, still keep annular after reactor 3 adds thermal expansion, in reaction, complete temperature reduces after contraction simultaneously, dunnage spring 11 can make dunnage 9 automatically shrink, and maintains the original state.Also tighten up by dunnage band dunnage 9 vertical portions, further ensures that dunnage 9 keeps annular, the expanding with heat and contract with cold of adaptive response device 3.
In dunnage 9, be fixed with suspender 13; the horizontal part upper-end surface of dunnage 9 is welded or be riveted in suspender 13 one end; the other end is the V-arrangement hook that stretches out dunnage 9 outsides, and protective layer 10 lower ends are fixed in V-arrangement hook, and the outer wall at reactor 3 is tightened by protective layer band 12 in top; by lower end, lift; the mode that tighten up on top is fixed on protective layer 10 in the outside of thermal insulating material 6, fixing reliable, saves immovable point; technique is simple, easy to operate.
Working principle and working procedure are as follows:
Braces in step 1, installation:
In top, braces 4 upper ends are fixed on the retaining ring of reactor 3 upper ends, and in top, in braces 4 and bottom, braces 5 is longitudinally cross-linked by garter spring, and avoid the opening 301 on reactor 3 outer walls, and in bottom, braces 5 lower ends are fixedly connected with reactor 3 bottoms; While using garter spring, first braces 5 in braces in top 4, bottom is connected with arc branch 1, then utilizes sleeve pipe 2 to connect each arc branch 1.
In bottom, braces 5 is longitudinally divided into again multistage, dodges the opening 301 being interspersed on reactor 3 outer walls, by garter spring, is longitudinally cross-linked, and for ease of making, in top, braces 4 is longitudinally also divided into multistage, by garter spring, longitudinally connects.
By dunnage 9 transverse weld to adjacent two interior braces, a plurality of dunnages 9 are connected to a bracing ring by dunnage spring 11, on interior braces, longitudinal separation is welded a plurality of bracing rings, at the horizontal part upper-end surface welding suspender 13 of dunnage 9, the outer end of suspender 13 straight down and have a V-arrangement hook; On interior braces, weld bar for line 7, bar for line 7 is selected the nail pin of varying number according to the span of interior braces.
Thermal insulating material 6 is pricked to bar for line 7, can effectively prevent that thermal insulating material 6 from hanging, and thermal insulating material 6 is fixedly supported on the horizontal part of dunnage 9, has reduced the load-carrying load of retaining ring and garter spring;
Thermal insulating material 6 outside parcel layer of steel wire nets 8, utilize link to be fixedly connected with the joint of steel wire 8, and utilize steel wire band 14 that steel wire 8 is tightened to the outside at thermal insulating material 6.
Protective layer 10 lower ends are supported in the V-arrangement hook of suspender 13; top utilizes protective layer band 12 to tighten the outside at steel wire 8; protective layer 10 comprises aluminium sheet and corrugated sheet, and aluminium sheet is fixed on the curved end of reactor 3, and corrugated sheet is fixed on the middle part direct tube section of reactor 3.
In reactor 3 outer wall expansion Shi， arc branches 1, along sleeve pipe 2, slide, it is large that garter spring diameter becomes, during the cooling contraction of reactor 3 outer wall, arc branch 1 automatically shrinks along sleeve pipe 2 under interior braces Action of Gravity Field, garter spring reduced, and what make that garter spring can adaptive response device 3 outer walls expands with heat and contract with cold.
With reference to Fig. 9～10, the present embodiment and embodiment's 1 difference is the connection set of arc branch 1, in the present embodiment, connection set adopts the arc-shaped connecting rod 15， arc branch 1 two ends hollow concentric with arc branch 1, and connecting rod 15 is arranged in the head and the tail end of adjacent two arc branch 1 hollows.
In the utility model, arc branch 1 head and the tail span can also be selected 4～10cm.The utility model can be applicable to large-scale Cr-Mo steel reactor insulation, but is not limited to large-scale Cr-Mo steel reactor, can also be applied to the insulation of common response device.
The above, it is only preferred embodiment of the present utility model, be not the utility model to be done to the restriction of other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.
Claims (4)
1. one kind large-scale Cr-Mo steel reactor compound heat preservation structure garter spring, it is characterized in that: comprise a plurality of arc branches (1) and connection set, the interval docking of a plurality of arc branches (1) head and the tail forms circular, the head and the tail interval 4～10cm of arc branch (1), connection set is flexibly connected the end of adjacent two arc branches (1).
2. large-scale Cr-Mo steel reactor compound heat preservation structure garter spring according to claim 1, it is characterized in that: the arc shrouds (2) that described connection set Wei Yu arc branch (1) is concentric, sleeve pipe (2) is actively set on the head and the tail end of adjacent two arc branches (1).
3. large-scale Cr-Mo steel reactor compound heat preservation structure garter spring according to claim 1 and 2, is characterized in that: described arc branch (1) cross section is for circular.
4. large-scale Cr-Mo steel reactor compound heat preservation structure garter spring according to claim 1, it is characterized in that: the arc-shaped connecting rod (15) that described connection set Wei Yu arc branch (1) is concentric, arc branch (1) two ends hollow, connecting rod (15) is arranged in the head and the tail end of adjacent two arc branch (1) hollows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486059.7U CN203453713U (en) | 2013-08-10 | 2013-08-10 | Hoop for large-sized chrome molybdenum steel reactor composite heat-preservation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486059.7U CN203453713U (en) | 2013-08-10 | 2013-08-10 | Hoop for large-sized chrome molybdenum steel reactor composite heat-preservation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453713U true CN203453713U (en) | 2014-02-26 |
Family
ID=50133589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320486059.7U Expired - Lifetime CN203453713U (en) | 2013-08-10 | 2013-08-10 | Hoop for large-sized chrome molybdenum steel reactor composite heat-preservation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453713U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200312470A1 (en) * | 2019-03-25 | 2020-10-01 | Marathon Petroleum Company Lp | Insulation securement system and associated methods |
| US11802257B2 (en) | 2022-01-31 | 2023-10-31 | Marathon Petroleum Company Lp | Systems and methods for reducing rendered fats pour point |
| US11860069B2 (en) | 2021-02-25 | 2024-01-02 | Marathon Petroleum Company Lp | Methods and assemblies for determining and using standardized spectral responses for calibration of spectroscopic analyzers |
| US11891581B2 (en) | 2017-09-29 | 2024-02-06 | Marathon Petroleum Company Lp | Tower bottoms coke catching device |
| US11898109B2 (en) | 2021-02-25 | 2024-02-13 | Marathon Petroleum Company Lp | Assemblies and methods for enhancing control of hydrotreating and fluid catalytic cracking (FCC) processes using spectroscopic analyzers |
| US11905479B2 (en) | 2020-02-19 | 2024-02-20 | Marathon Petroleum Company Lp | Low sulfur fuel oil blends for stability enhancement and associated methods |
| US11905468B2 (en) | 2021-02-25 | 2024-02-20 | Marathon Petroleum Company Lp | Assemblies and methods for enhancing control of fluid catalytic cracking (FCC) processes using spectroscopic analyzers |
| US11970664B2 (en) | 2021-10-10 | 2024-04-30 | Marathon Petroleum Company Lp | Methods and systems for enhancing processing of hydrocarbons in a fluid catalytic cracking unit using a renewable additive |
| US11975316B2 (en) | 2019-05-09 | 2024-05-07 | Marathon Petroleum Company Lp | Methods and reforming systems for re-dispersing platinum on reforming catalyst |
| US12000720B2 (en) | 2018-09-10 | 2024-06-04 | Marathon Petroleum Company Lp | Product inventory monitoring |
| US12031094B2 (en) | 2021-02-25 | 2024-07-09 | Marathon Petroleum Company Lp | Assemblies and methods for enhancing fluid catalytic cracking (FCC) processes during the FCC process using spectroscopic analyzers |
-
2013
- 2013-08-10 CN CN201320486059.7U patent/CN203453713U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11891581B2 (en) | 2017-09-29 | 2024-02-06 | Marathon Petroleum Company Lp | Tower bottoms coke catching device |
| US12000720B2 (en) | 2018-09-10 | 2024-06-04 | Marathon Petroleum Company Lp | Product inventory monitoring |
| US12031676B2 (en) * | 2019-03-25 | 2024-07-09 | Marathon Petroleum Company Lp | Insulation securement system and associated methods |
| US20200312470A1 (en) * | 2019-03-25 | 2020-10-01 | Marathon Petroleum Company Lp | Insulation securement system and associated methods |
| US11975316B2 (en) | 2019-05-09 | 2024-05-07 | Marathon Petroleum Company Lp | Methods and reforming systems for re-dispersing platinum on reforming catalyst |
| US11905479B2 (en) | 2020-02-19 | 2024-02-20 | Marathon Petroleum Company Lp | Low sulfur fuel oil blends for stability enhancement and associated methods |
| US11920096B2 (en) | 2020-02-19 | 2024-03-05 | Marathon Petroleum Company Lp | Low sulfur fuel oil blends for paraffinic resid stability and associated methods |
| US11898109B2 (en) | 2021-02-25 | 2024-02-13 | Marathon Petroleum Company Lp | Assemblies and methods for enhancing control of hydrotreating and fluid catalytic cracking (FCC) processes using spectroscopic analyzers |
| US11906423B2 (en) | 2021-02-25 | 2024-02-20 | Marathon Petroleum Company Lp | Methods, assemblies, and controllers for determining and using standardized spectral responses for calibration of spectroscopic analyzers |
| US11905468B2 (en) | 2021-02-25 | 2024-02-20 | Marathon Petroleum Company Lp | Assemblies and methods for enhancing control of fluid catalytic cracking (FCC) processes using spectroscopic analyzers |
| US11921035B2 (en) | 2021-02-25 | 2024-03-05 | Marathon Petroleum Company Lp | Methods and assemblies for determining and using standardized spectral responses for calibration of spectroscopic analyzers |
| US11885739B2 (en) | 2021-02-25 | 2024-01-30 | Marathon Petroleum Company Lp | Methods and assemblies for determining and using standardized spectral responses for calibration of spectroscopic analyzers |
| US11860069B2 (en) | 2021-02-25 | 2024-01-02 | Marathon Petroleum Company Lp | Methods and assemblies for determining and using standardized spectral responses for calibration of spectroscopic analyzers |
| US12031094B2 (en) | 2021-02-25 | 2024-07-09 | Marathon Petroleum Company Lp | Assemblies and methods for enhancing fluid catalytic cracking (FCC) processes during the FCC process using spectroscopic analyzers |
| US11970664B2 (en) | 2021-10-10 | 2024-04-30 | Marathon Petroleum Company Lp | Methods and systems for enhancing processing of hydrocarbons in a fluid catalytic cracking unit using a renewable additive |
| US11802257B2 (en) | 2022-01-31 | 2023-10-31 | Marathon Petroleum Company Lp | Systems and methods for reducing rendered fats pour point |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203453713U (en) | Hoop for large-sized chrome molybdenum steel reactor composite heat-preservation structure | |
| CN203395508U (en) | Composite type heat preservation structure of large chromium-molybdenum steel reactor | |
| CN102409838A (en) | Moveable operating platform and method for constructing suspended ceiling of roof by using same | |
| CN206128796U (en) | Cat head tangent tower | |
| CN201584714U (en) | Protective device for secondary pulling and putting of cables | |
| CN209451178U (en) | Repair of Transformer bottom jecket type structure safety belt suspension device | |
| CN201146346Y (en) | Portable insulation maintenance gap bridge | |
| CN103398266B (en) | Composite thermal insulation structure of large chromium-molybdenum steel reactor and thermal insulation method thereof | |
| CN206219988U (en) | Foldable hanging basket | |
| CN104060851A (en) | Supporting structure and construction method for arch-rib roof truss sliding construction | |
| CN206625600U (en) | A kind of steel construction equipped with safety net hook | |
| CN203690755U (en) | Changing hoisting device for silica gel pot of transformer | |
| CN212907187U (en) | Low temperature resistant snow-proof cable | |
| CN202047490U (en) | Pressing heat insulation board | |
| CN210047844U (en) | Detachable saddle of wind power tower cylinder | |
| CN202074185U (en) | Cage type heat insulation device for high-temperature equipment | |
| CN206693473U (en) | Assembled open-type building bottom plate purlin substitutes erection support and mounting assembly | |
| CN207339070U (en) | Light tool for replacing insulator string | |
| CN207218127U (en) | A kind of high intensity packway bar | |
| CN206458908U (en) | A kind of heavy construction comprehensive pipeline suspension and support | |
| JPH02211012A (en) | Method of setting up net for transmission line stringing work and net used therefor | |
| CN201731229U (en) | Thermal-insulation structure for high-temperature container | |
| CN212863798U (en) | Rod lifting appliance | |
| CN218954358U (en) | Inside and outside full braces formula insulation construction of coke drum | |
| CN202731317U (en) | System suitable for thermal insulation of steel pipe concrete |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
|
| CX01 | Expiry of patent term |