CN206257408U - A kind of bending compensator and the hot air duct with the bending compensator - Google Patents
A kind of bending compensator and the hot air duct with the bending compensator Download PDFInfo
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- CN206257408U CN206257408U CN201621191545.6U CN201621191545U CN206257408U CN 206257408 U CN206257408 U CN 206257408U CN 201621191545 U CN201621191545 U CN 201621191545U CN 206257408 U CN206257408 U CN 206257408U
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- branch pipe
- compensator
- mozzle
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- 238000005452 bending Methods 0.000 title claims abstract description 42
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- 238000006073 displacement reaction Methods 0.000 abstract description 21
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- 210000002445 nipple Anatomy 0.000 description 6
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
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- 229910052742 iron Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
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Abstract
Compensator and hot air duct with the bending compensator are bent the utility model discloses a kind of, belongs to hot air duct compensator technical field.The utility model includes outer tube, location-plate I, location-plate II, expansion link, mozzle I and mozzle II；Mozzle I and mozzle II are provided with described outer tube, location-plate I and location-plate II are fixedly installed on the outer tube, described location-plate I and location-plate II is correspondingly arranged, bellows is provided with outer tube between location-plate I and location-plate II, is connected by expansion link between described location-plate I and location-plate II；The two ends of expansion link are fixed on location-plate I and location-plate II by location nut；And bending compensator is arranged at the junction of horizontal branch pipe and vertical branch pipe.The utility model effective customer service destruction of blind flange force and thermal expansion displacement to hot air duct system, improves the service life of hot air duct.
Description
Technical field
The utility model is related to blast funnace hot blast stove hot air duct technical field, in particular, is related to a kind of bending compensation
Device and the hot air duct with the bending compensator.
Background technology
Blast furnace ironmaking is the important step in steel production, is also most widely used iron-smelting process, blast furnace production process
In load iron ore, coke, slag making with flux (lime stone) from furnace roof, be blown into along the air port in stove week from lower furnace preheated
Air.Carbon at high temperature in coke rose with the carbon monoxide and hydrogen of the oxygen burning generation blasted in air in stove
The ferriferous oxide reduction in ore is obtained into molten iron in journey.Blast furnace process needs the sufficiently high hot blast of temperature, in blast furnace process mistake
Hot-blast stove can significantly improve the returns and efficiency of blast furnace blast heating is to desired temperature and blasts inside blast furnace in journey.
Hot-blast stove needs special hot air duct to be conveyed during 1100-1250 DEG C of high-temperature hot-air is blasted into blast furnace, and
One blast furnace is commonly equipped with 3-4 hot-blast stove group, and multiple hot-blast stoves just constitute the height of complexity during for blast furnace air feed
Temperature, high-pressure hot wind pipe-line system.
Hot-blast main one end is connected with hot-blast stove group multiple hot blast manifold vertical-horizontal, and the other end connects with bustle pipe level
Connect, particularly top combustion stove hot-blast outlet position is higher, cause hot blast manifold position higher than bustle pipe 5-8 meters so that
With bustle pipe not in same level, the temperature compensation and stopping means of whole hot blast piping set and compare hot-blast main
It is complicated.Hot-blast pressure in hot air duct is generally 0.30-0.45Mpa, and can produce huge blind plate in blind plate or elbow
Power, hot air duct and hot-blast stove can also expand during being heated, and blind flange force and thermal expansion displacement act on hot air duct.
In order to eliminate above-mentioned influence, the compensator of resistance to axial tension should be set to eliminate the heat such as hot-blast stove, hot blast manifold and hot-blast main
Expansion displacement, while there is provision of stopping means to overcome and limit the displacement of hot air duct cecum power generation during air-supply.
Existing hot air duct system is difficult to effectively eliminate the displacement that the expansion displacement in the hot-blast stove course of work is produced with cecum power,
Easily cause three kinds of damages of hot air duct：1) hot air furnace hot air exports resistance to material and damages, 2) hot blast manifold is connected with hot-blast main
The resistance to material in Y-pipe top is damaged, 3) the resistance to material of vertical tube of hot-blast main's linking is damaged, and ultimately results in the above-mentioned position shell of wind pipeline
It is rubescent, split, have a strong impact on blast furnace safety production.Because the position of hot blast main pipe is higher, not easy care, in the operating mode of wind-warm syndrome high
Under, the stability of hot air duct is own through turning into an important technical task.In order to eliminate above mentioned problem, generally require above-mentioned
Compensator is installed on pipeline to compensate the expansion displacement of hot air duct.
Through retrieval, the technical scheme for having had correlation is disclosed.Such as innovation and creation it is entitled：Split-type bellow-type expansion
Device (the patent No.：ZL2010207013071, the applying date：2010-12-31), it includes bellows, is connected to bellows two ends
Pipe nipple, the washer plate being arranged on the inner surface of the pipe nipple that fluid passes through at first and it is arranged in pipe nipple and bellows
Portion and with the mozzle of the end thereof contacts of washer plate, wherein, the bellows, pipe nipple, washer plate and mozzle are by quantity
It is equal and be evenly distributed in the cross section of split-type FlexbleJoint at least two single-lobes composition, fluid flow direction with it is described
Cross section is vertical.Additionally, bidirectional guide retrial compensator (number of patent application：2016101126073, the applying date：2016-02-
29), it includes pipe nipple, bellows, left mozzle, right mozzle, middle adapter, leads between middle adapter and two ends pipe nipple
Bellows connection is crossed, complex corrugated pipe compensator structure is constituted；Be provided with bellows axially covering bellows left mozzle and
Right mozzle；Although above-mentioned technical scheme has all carried out technical improvement to compensator, above-mentioned compensator is often
It is only capable of realizing stretching or compression function, its supplementary functions is limited, it is difficult to the multi-form of effective compensation hot air duct
Expansion displacement；This problem continues to improve.
Utility model content
1. the utility model technical problem to be solved
The purpose of this utility model is to overcome hot air duct compensator to be in the prior art difficult to effectively compensate warm-air pipe
The problem of the expansion displacement of the multi-form in road, there is provided a kind of bending compensator and the warm-air pipe with the bending compensator
Road；A kind of bending compensator for providing realizes the bending compensation to hot air duct；One kind of offer is provided with bending compensator
Hot air duct effectively overcome the destruction of blind flange force and thermal expansion displacement to hot air duct system, so as to improve
Service life.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the utility model is provided is：
A kind of bending compensator of the present utility model, including outer tube, location-plate I, location-plate II, expansion link, the and of mozzle I
Mozzle II；Described mozzle I and mozzle II is arranged in outer tube, and location-plate I and positioning are fixedly installed on the outer tube
Plate II, is provided with bellows on the outer tube between location-plate I and location-plate II, lead between described location-plate I and location-plate II
Expansion link is crossed to be connected；The two ends of expansion link are fixed with location-plate I, location-plate II respectively by location nut.
Preferably, described location-plate I and the two ends of location-plate II are respectively arranged with concave spherical surface packing ring, location nut with it is recessed
Convex spherical packing ring is provided between spheric washer.
Preferably, described mozzle I is provided with slip back-up ring away from one end end of mozzle II, the slip back-up ring with
Outer tube wall is slidably matched, and described mozzle II is provided with fixed back-up ring away from one end end of mozzle I, fixed back-up ring with
Outer tube wall is fixedly connected with.
Preferably, described location nut is set to 2.
A kind of hot air duct for being provided with bending compensator of the present utility model, including steering knuckle, vertical branch pipe, level
Branch pipe and branch pipe positioning seat, described vertical branch pipe, horizontal branch pipe are fixed on branch pipe positioning seat, described vertical branch pipe top
It is connected with hot-blast stove by steering knuckle, the vertical branch bottom of the tube is connected with horizontal branch pipe, is provided with described horizontal branch pipe
Above-mentioned bending compensator.
Preferably, described bending compensator is installed on the junction of horizontal branch pipe and vertical branch pipe.
Preferably, it is provided with hot-blast valve on described horizontal branch pipe.
3. beneficial effect
The technical scheme provided using the utility model, compared with prior art, is had the advantages that：
(1) a kind of bending compensator of the present utility model, is disposed with concave spherical surface pad between location nut and location-plate
Circle and convex spherical packing ring, convex spherical packing ring are engaged with concave spherical surface packing ring, and the spherical radius of convex spherical is less than concave ball surfaces
Spherical radius, convex spherical is engaged with concave ball surfaces so that bending compensator bends when power is squeezed so that
The expansion displacement of pipeline is eliminated, so as to prevent hot air duct from damaging；
(2) a kind of hot air duct for being provided with bending compensator of the present utility model, hot blast is arranged at by bending compensator
During the junction of pipeline, when there is the micro skew away from hot-blast stove in vertical branch pipe top, the expansion link forced compression on top,
The expansion link stress stretching of bottom, moves closer to, directly on convex spherical packing ring and concave spherical surface packing ring along subjected to compressive forces
Fitted with concave spherical surface packing ring to convex spherical packing ring；The lower effect along tension stretch of convex spherical packing ring and concave spherical surface packing ring is gradually
Away from so that there is micro arc-shaped bend in bending compensator, and be combined with the micro skew of vertical branch pipe generation, the vertical branch of compensation
Micro skew in pipe, the damage for effectively preventing steering knuckle expanded by heating from deforming and causing there is.
Brief description of the drawings
Fig. 1 is the structural representation of bending compensator of the present utility model；
Fig. 2 is the connection diagram of horizontal branch pipe unit of the present utility model and vertical branch pipe unit.
Label declaration in accompanying drawing：
110th, hot-blast stove；121st, steering knuckle；122nd, vertical branch pipe；131st, horizontal branch pipe；132nd, hot-blast valve；140th, branch pipe
Positioning seat；
210th, compensator is bent；
310th, location nut；
411st, location-plate I；412nd, location-plate II；421st, concave spherical surface packing ring；422nd, convex spherical packing ring；430th, expansion link；
441st, mozzle I；442nd, mozzle II；
510th, bellows；521st, back-up ring is slided；522nd, fixed back-up ring.
Specific embodiment
Hereafter the detailed description to exemplary embodiment of the present utility model with reference to accompanying drawing, and the accompanying drawing forms the one of description
Part, shows the enforceable exemplary embodiment of the utility model as an example in the figure.Although these exemplary realities
Apply example to be described in sufficient detail to enable that those skilled in the art implement the utility model, it is to be understood that it can be realized
His embodiment and can various changes can be made to the utility model in the case where spirit and scope of the present utility model are not departed from.Cause
This, hereafter the more detailed description to embodiment of the present utility model is not limited to required model of the present utility model
Enclose, and just to being illustrated and do not limit the characteristics of to the utility model and feature description, to propose to perform sheet
The best mode of utility model, and be sufficient so that those skilled in the art and can implement the utility model.So as to the utility model
Scope be defined solely by the appended claims.
Hereafter detailed description of the present utility model and example embodiment can be more fully understood with reference to accompanying drawing, wherein this reality
Identified by reference with new element and feature.
Embodiment 1
As shown in Figure 1-2, a kind of hot air duct for being provided with bending compensator of the present utility model, including steering knuckle
121st, vertical branch pipe 122, horizontal branch pipe 131 and branch pipe positioning seat 140, described vertical branch pipe 122, horizontal branch pipe 131 are fixed
In on branch pipe positioning seat 140, the described top of vertical branch pipe 122 is connected by steering knuckle 121 with hot-blast stove 110, and this is vertical
The bottom of branch pipe 122 is connected with horizontal branch pipe 131, and bending compensator 210 is provided with described horizontal branch pipe 131, and the bending is mended
The junction that device 210 is installed on horizontal branch pipe 131 and vertical branch pipe 122 is repaid, that is, is bent compensator 210 and is installed on horizontal branch pipe
The position that 131 end is connected with vertical branch pipe 122；And hot-blast valve 132 is provided with horizontal branch pipe 131, hot-blast valve 132 is used for
Control being turned on and off for hot air duct.
A kind of bending compensator of the present embodiment include outer tube, location-plate I 411, location-plate II 412, expansion link 430,
Mozzle I 441 and mozzle II 442；Mozzle I 441 and mozzle II 442, the outer tube are provided with described outer tube
On be fixedly installed location-plate I 411 and location-plate II 412, described location-plate I 411 and the correspondence of location-plate II 412 set
Put, bellows 510 be provided with the outer tube between location-plate I 411 and location-plate II 412, the bellows 510 is set to 2,
And two bellowss 510 are symmetrical arranged on symmetry axis I 211, bending is caused because bellows 510 is set on Central Symmetry
When during bending, case of bending is also on the axisymmetricly states of symmetry axis I 211 for compensator 210.
It is connected by expansion link 430 between the location-plate I 411 and location-plate II 412 of the present embodiment, wherein expansion link
430 have Telescopic；The two ends of expansion link 430 are fixed on location-plate I411 and location-plate II 412 by location nut 310
On.The two ends of location-plate I 411 and location-plate II 412 are respectively arranged with concave spherical surface packing ring 421, location nut 310 and concave spherical surface
Convex spherical packing ring 422 is provided between packing ring 421；The described spherical radius of concave spherical surface packing ring 421 is more than convex spherical packing ring 422
Spherical radius.The side away from bellows 510 of location-plate I 411 is provided with location nut 310, and the location nut 310 is set
It is 2, concave spherical surface packing ring 421 and convex spherical packing ring 422 is disposed between location nut 310 and location-plate I 411, it is described
Convex spherical packing ring 422 be engaged with concave spherical surface packing ring 421；Wherein concave spherical surface packing ring 421 is that side is provided with concave ball surfaces
Packing ring, its side is concave side, and concave ball surfaces are provided with the concave side；Described concave spherical surface packing ring 421 is opposite with concave side
From side be planar side, planar side and the location-plate I 411 of concave spherical surface packing ring 421 fit；Above-mentioned convex spherical packing ring 422 with
The side that concave side is engaged is the convex side of convex spherical packing ring 422, is provided with convex spherical on convex side, and convex spherical
Spherical radius is less than the spherical radius of concave ball surfaces, and convex spherical is engaged with concave ball surfaces so that bending compensator 210 is being received
Bent during to extruding force, so as to eliminate the expansion displacement of pipeline；Described convex spherical packing ring 422 is near location nut 310
Side be planar side, planar side and the location nut 310 of convex spherical packing ring 422 fit, and planar side is set to plane and calmly
Position nut 310 fits, and is conducive to preventing location nut 310 from loosening, so that location nut 310 is spacing more firm
Gu.
Above-mentioned mozzle I 441 and mozzle II 442 is symmetrical arranged, and mozzle I 441 and mozzle II 442 it
Between be provided with gap, be conducive to mozzle I 441 and mozzle II 442 to bend.Mozzle I 441 is away from mozzle II
442 one end end is provided with slip back-up ring 521, slides back-up ring 521 and is arranged at the fixed side near hot-blast stove 110, that is, slide
Dynamic back-up ring 521 is arranged at the side of the air feed of hot-blast stove 110, and the slip back-up ring 521 is slidably matched with outer tube wall, described water conservancy diversion
Pipe II 442 is provided with fixed back-up ring 522 away from one end end of mozzle I 441, and fixed back-up ring 522 is mutually solid with outer tube wall
Even.Location-plate I 411 be squeezed power extrude when, when mozzle I 441 and mozzle II 442 power that is squeezed are bent upwards
When (wherein upward position relationship is the position relationship in Fig. 1), the now expansion link 430 stress stretching on top, bottom is stretched
The forced compression of contracting bar 430, convex spherical packing ring 422 is subjected to compressive forces with the lower edge of concave spherical surface packing ring 421 to be moved closer to, directly
Fitted with concave spherical surface packing ring 421 to convex spherical packing ring 422；Along Tensile on convex spherical packing ring 422 and concave spherical surface packing ring 421
The effect of power is gradually distance from, so that bending compensator 210 occurs arc-shaped bend, convex spherical packing ring 422 and concave spherical surface packing ring
421 mutual cooperation is conducive to bending compensator 210 to bend, and eliminates the expansion displacement of pipeline.
Additionally, top combustion stove 110 easily occurs expanded by heating and " growing tall " after being heated, hot-blast stove is now just easily caused
110 there is relative displacement with the junction of vertical branch pipe 122, and relative displacement causes the company of vertical branch pipe 122 and horizontal branch pipe 131
Larger stress is produced at the steering knuckle 121 for connecing and is damaged；Existing technical staff, in order to eliminate the expansion displacement in pipeline,
Various compensators are typically arranged at the middle part of pipeline.Through retrieval, existing related technical staff has paid close attention to the technical problem,
And applied for patent：A kind of rectilinear hot blast manifold structure (patent No. with mixing wind tube of top combustion stove：
ZL201520538216.3, authorized announcement date：2015-12-30, patentee：Wang Changchun), it is in hot blast manifold vertical section
Axial compensator is installed, so as to eliminate hot-blast stove 110 to a certain extent and expand " growing tall " is used to vertical branch pipe 122 longevity
The influence of life.But, further investigation revealed that, although the technology improves service life to a certain extent, still
Easily cause vertical branch pipe 122 to damage, the technical barrier annoyings technical staff always, technical staff does not understand after repeated thinking.
Find that the top of vertical branch pipe 122 is connected by steering knuckle 121 with hot-blast stove 110 by prolonged research,
Steering knuckle 121 can equally occur expanded by heating during logical hot blast, and because steering knuckle 121 is case of bending, it is received
Extension displacement during thermal expansion is more complicated, can not only produce and deform along vertical direction, and can produce along horizontal direction
Deformation, and the bottom of branch pipe 122 is fixed on branch pipe positioning seat 140 vertically, and this results in the top of vertical branch pipe 122 and hot-blast stove
110 distance and bottom are different from the distance generation of hot-blast stove 110 so that vertical branch pipe 122 produces one relative to vertical direction
There is the micro skew away from hot-blast stove 110 in fixed angle skew, i.e., the vertical top of branch pipe 122；Additionally, the vertical bottom of branch pipe 122
The end at end can equally occur expanded by heating and produce micro displacement during being heated；Above-mentioned various thermal deformations
Deformation direction is interlaced, although the relative displacement very little of thermal deformation, but is enough in vertical branch pipe 122 and horizontal branch pipe 131
Junction produces stress and causes hot air duct to damage；Above-mentioned patent application (a kind of top combustion stove with mixing wind tube
Rectilinear hot blast manifold structure, ZL201520538216.3) although eliminating the relative displacement on vertically to a certain extent,
It is difficult to effectively eliminate the problem.
Therefore the creative proposition of the utility model sets in horizontal branch pipe 131 near the connection end end of vertical branch pipe 122
Bending compensator 210 is put, when the top of vertical branch pipe 122 occurs the micro skew away from hot-blast stove 110, on (as shown in Figure 1)
The forced compression of expansion link 430 in portion, the stress of expansion link 430 stretching of bottom, convex spherical packing ring 422 and concave spherical surface packing ring 421
On moved closer to along subjected to compressive forces, until convex spherical packing ring 422 fits with concave spherical surface packing ring 421；Convex spherical pad
Circle 422 is gradually distance from the lower effect along tension stretch of concave spherical surface packing ring 421 so that bending compensator 210 occurs micro
Arc-shaped bend, and be combined with vertical branch pipe 122 micro skew occurs, so that compensating vertical branch pipe 122 there is micro skew, effectively
Prevent the expanded by heating of steering knuckle 121 from deforming and the damage that causes.Additionally, bending compensator 210 offsets up and is conducive to disappearing
Except the expansion displacement at the bottom of vertical branch pipe 122 and branch pipe positioning seat 140, so as to the expansion for effectively eliminating the junction is damaged
It is bad.
More specifically, although exemplary embodiment of the present utility model has been described herein, the utility model is simultaneously
These embodiments are not limited to, but are repaiied according to the process that detailed description above can be appreciated that including those skilled in the art
Change, omit, any and whole embodiments of (such as between each embodiment) combination, adaptive change and/or replacement.Right
It is required that in restriction can widely be explained according to the language used in claim, and be not limited in foregoing detailed description
In or the example that describes during this application is implemented, these examples are considered as nonexcludability.For example, in the utility model
In, term " preferably " not exclusively, here it means that " preferably, but be not restricted to that ".It is in office where method or
Any step enumerated in process claims can in any order perform and be not limited to the order proposed in claim.
Therefore, scope of the present utility model only should determine by appended claims and its legal equivalents, rather than by giving above
The explanation that goes out and example determine.
Claims (7)
- It is 1. a kind of to bend compensator, it is characterised in that：Including outer tube, location-plate I (411), location-plate II (412), expansion link (430), mozzle I (441) and mozzle II (442)；Described mozzle I (441) and mozzle II (442) is arranged on outer tube It is interior, location-plate I (411) and location-plate II (412), location-plate I (411) and location-plate II (412) are fixedly installed on the outer tube Between outer tube on be provided with bellows (510), between described location-plate I (411) and location-plate II (412) pass through expansion link (430) it is connected；The two ends of expansion link (430) by location nut (310) respectively with location-plate I (411), location-plate II (412) it is fixed.
- 2. one kind according to claim 1 bends compensator, it is characterised in that：Described location-plate I (411) and location-plate II (412) two ends are respectively arranged with concave spherical surface packing ring (421), are set between location nut (310) and concave spherical surface packing ring (421) There is convex spherical packing ring (422).
- 3. one kind according to claim 2 bends compensator, it is characterised in that：Described mozzle I (441) is away from water conservancy diversion One end end of pipe II (442) is provided with slip back-up ring (521), and the slip back-up ring (521) is slidably matched with outer tube wall, described Mozzle II (442) one end end of mozzle I (441) is provided with fixed back-up ring (522), fixed back-up ring (522) with Outer tube wall is fixedly connected with.
- 4. one kind according to claim 3 bends compensator, it is characterised in that：Described location-plate I (411), location-plate II (412) both sides are fixed using double location nuts (310).
- It is 5. a kind of that the hot air duct for bending compensator is installed, it is characterised in that：Including steering knuckle (121), vertical branch pipe (122), horizontal branch pipe (131) and branch pipe positioning seat (140), described vertical branch pipe (122), horizontal branch pipe (131) are fixed on On branch pipe positioning seat (140), described vertical branch pipe (122) top is connected by steering knuckle (121) with hot-blast stove (110), Vertical branch pipe (122) bottom is connected with horizontal branch pipe (131), is set just like claim on described horizontal branch pipe (131) Bending compensator (210) described in any one of 1-4.
- 6. it is according to claim 5 it is a kind of be provided with bending compensator hot air duct, it is characterised in that：Described bending Compensator (210) is installed on the junction of horizontal branch pipe (131) and vertical branch pipe (122).
- 7. it is according to claim 5 it is a kind of be provided with bending compensator hot air duct, it is characterised in that：Described level Hot-blast valve (132) is provided with branch pipe (131).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621191545.6U CN206257408U (en) | 2016-10-31 | 2016-10-31 | A kind of bending compensator and the hot air duct with the bending compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621191545.6U CN206257408U (en) | 2016-10-31 | 2016-10-31 | A kind of bending compensator and the hot air duct with the bending compensator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257408U true CN206257408U (en) | 2017-06-16 |
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ID=59025743
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621191545.6U Expired - Fee Related CN206257408U (en) | 2016-10-31 | 2016-10-31 | A kind of bending compensator and the hot air duct with the bending compensator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033632A (en) * | 2020-08-19 | 2020-12-04 | 中国科学院力学研究所 | Overload-proof compensator capable of bearing atmosphere dynamic load |
| CN115786616A (en) * | 2022-10-10 | 2023-03-14 | 北京首钢国际工程技术有限公司 | Hot blast pipe structure |
-
2016
- 2016-10-31 CN CN201621191545.6U patent/CN206257408U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033632A (en) * | 2020-08-19 | 2020-12-04 | 中国科学院力学研究所 | Overload-proof compensator capable of bearing atmosphere dynamic load |
| CN115786616A (en) * | 2022-10-10 | 2023-03-14 | 北京首钢国际工程技术有限公司 | Hot blast pipe structure |
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| CF01 | Termination of patent right due to non-payment of annual fee |