CN112295533A - Herringbone baffle with fin type detachable supporting beam - Google Patents
Herringbone baffle with fin type detachable supporting beam Download PDFInfo
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- CN112295533A CN112295533A CN202011169208.8A CN202011169208A CN112295533A CN 112295533 A CN112295533 A CN 112295533A CN 202011169208 A CN202011169208 A CN 202011169208A CN 112295533 A CN112295533 A CN 112295533A
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- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000571 coke Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005194 fractionation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
- B01J19/325—Attachment devices therefor, e.g. hooks, consoles, brackets
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention belongs to the petrochemical industry, and relates to a herringbone baffle mounting structure for a tower, in particular to a herringbone baffle with a fin-shaped detachable supporting beam, which comprises a herringbone baffle and a fin-shaped detachable supporting beam structure, wherein the fin-shaped detachable supporting beam structure comprises a main beam, a plurality of groups of inclined pull beams are movably mounted on two sides of the main beam, each group of inclined pull beams are arranged in parallel at intervals, each group comprises two inclined pull beams, and the two inclined pull beams in the same group are symmetrically mounted on two sides of the main beam; the main beam comprises a vertical plate, a plurality of gas phase circulation holes are uniformly formed in the vertical plate at intervals, each inclined pull beam is installed with the gas phase circulation holes in a staggered mode, the inclined pull beams are installed on two sides of the main beam in an inclined mode, and the end portions, far away from the main beam, of the inclined pull beams are higher than the end portions, far away from the main beam, of the inclined pull beams; one end of the herringbone baffle is fixed above a gas-phase circulation hole made by the main beam, and the other end of the herringbone baffle is fixed with the end part of the diagonal draw beam on the same side, which is far away from the main beam.
Description
Technical Field
The invention belongs to the petrochemical industry, relates to a herringbone baffle mounting structure for a tower, and particularly relates to a herringbone baffle with a fin-shaped detachable supporting beam.
Background
In the petrochemical industry, towers are important equipment units with large quantity and wide range, and the towers are widely applied to various operation units such as distillation, absorption, washing, fractionation and the like.
In recent years, the requirements for long-period operation of the tower are continuously increased, the technical requirements for tower internals are more and more strict, and the reasonable design of the tower internals is the precondition for ensuring the stable operation, safe operation and maximum production capacity and efficiency of the tower. And for materials which are easy to be accumulated and have high heat exchange quantity, the problems of good heat exchange efficiency and blockage resistance in rectification and fractionation are solved, and the herringbone baffle plate is one of important parts of the rectification column and the lower tower section of the fractionation column. An oil gas inlet or a reboiler return opening is generally arranged below a herringbone baffle at the bottom of the tower, the pressure of a gas inlet is high, the temperature is high, great upward impact force can be generated on the herringbone baffle above, and the herringbone baffle is easy to deform greatly, blow and turn over or tear in the long-period operation process of the device. In addition, coking of the herringbone baffle is inevitable in the long-term operation process of the device, the coking of the herringbone baffle affects the separation effect of the herringbone baffle and the treatment capacity of the whole device, and even the device can be shut down. How to rapidly change the herringbone baffle plates with serious coking is also a problem to be considered.
The herringbone baffle plate with the opening and the arrangement mode in the tower are mentioned in the patent of invention, and the patent number is CN 101549213A. The invention patent only introduces a herringbone baffle with an opening and a tower internal arrangement mode. The herringbone baffle with the holes can increase the contact area of gas and liquid, accelerate the liquid flow and reduce the retention time, but the problem that the herringbone baffle is subjected to high gas speed and large load impact in the actual operation process is not involved in the patent, the flow and the retention time of the liquid are greatly influenced due to the large deformation of the herringbone baffle, along with the continuous increase of the tower diameter, the span and the width of the herringbone baffle can also be increased, the strength and the rigidity of the baffle are enhanced only by increasing the thickness of the herringbone baffle, and therefore, the study on the supporting beam of the herringbone baffle is necessary.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a supporting and fixing device for a herringbone baffle plate, which is movably mounted with a main beam, has the advantages of good supporting strength, strong bending resistance and convenient processing and mounting, and can smoothly enter a tower through a manhole.
The technical scheme adopted by the invention is as follows:
the utility model provides a herringbone baffle with a supporting beam can be dismantled to wing type which characterized in that: the wing-shaped detachable supporting beam structure comprises a main beam and inclined pull beams, wherein a plurality of groups of inclined pull beams are movably mounted on two sides of the main beam, the inclined pull beams are arranged in parallel at intervals, each group comprises two inclined pull beams, and the two inclined pull beams in the same group are symmetrically mounted on two sides of the main beam; the main beam comprises a vertical plate, a plurality of gas phase circulation holes are uniformly formed in the vertical plate at intervals, each inclined pull beam is installed with the gas phase circulation holes in a staggered mode, the inclined pull beams are installed on two sides of the main beam in an inclined mode, and the end portions, far away from the main beam, of the inclined pull beams are higher than the end portions, far away from the main beam, of the inclined pull beams; one end of the herringbone baffle is fixed above a gas-phase circulation hole made by the main beam, and the other end of the herringbone baffle is fixed with the end part of the diagonal draw beam on the same side, which is far away from the main beam.
Furthermore, a girder connecting plate is respectively installed at the front end and the rear end of a girder in the fin-type detachable supporting beam structure, one end of the girder and one end of the girder connecting plate are movably installed, and the other end of the girder connecting plate is used for being fixedly installed with a tower wall.
Furthermore, a plurality of rib plates are fixedly arranged on two sides of a vertical plate of a main beam in the fin-type detachable supporting beam structure at uniform intervals, and one inclined pull beam is movably arranged in each rib plate.
Furthermore, a side connecting plate is fixedly arranged at the end part, far away from the main beam, of the diagonal draw beam in each fin-type detachable supporting beam structure.
Furthermore, the end parts of two sides of the main beam of the herringbone baffle, which is far away from the fin-shaped detachable supporting beam structure, are bent downwards to form a baffle self beam, the baffle self beam is fixed with a side connecting plate fixedly installed on the diagonal beam, the front end and the rear end of the baffle self beam are both provided with a baffle connecting plate, and the end part of the baffle connecting plate extends out of the orthographic projection position of the baffle self beam.
Furthermore, the main beam of the fin-shaped detachable supporting beam structure adopts an I-shaped structure, namely, transverse plates are respectively manufactured at the upper end and the lower end of each vertical plate.
Furthermore, the I-shaped structure can adopt a two-section splicing structure and comprises two half beams, each half beam comprises the vertical plate, the upper end part and the lower end part of the vertical plate are bent towards the same side to form a transverse plate to form a [ -shape, and the two half beams are arranged in a back direction and integrally installed.
Furthermore, the main beam of the fin-type detachable supporting beam structure adopts a T-shaped structure, namely a transverse plate is manufactured at the upper end of the vertical plate.
Furthermore, the T-shaped structure can adopt two sections of splicing structures and comprises two half beams, each half beam comprises the vertical plate, the transverse plate is bent towards one side at the upper end part of the vertical plate to form an inverted L shape, and the two half beams are arranged in a back direction and integrally installed.
Furthermore, a supporting plate is integrally fixed at the lower end part of the vertical plate at the front end and the rear end of the main beam, the supporting plate is perpendicular to the vertical plate, and bolt holes are formed in the supporting plate at two sides of the vertical plate.
The invention has the advantages and positive effects that:
according to the invention, a novel herringbone baffle and a fin-shaped detachable supporting beam structure matched with the herringbone baffle are designed, and a plurality of gas phase circulation holes formed in a main beam vertical plate in the fin-shaped detachable supporting beam structure are beneficial to gas circulation at the bottom of the baffle, so that gas phase distribution is more uniform. The outer end of the inclined straining beam is arranged obliquely upwards compared with the inner end, and the formed fin-shaped structure can greatly improve the supporting strength compared with the original slope-shaped structure, avoids directly welding reinforcing ribs on the lower surface of the herringbone baffle plate, ensures the maximum aperture ratio of the herringbone baffle plate and further improves the tower plate efficiency. The herringbone baffle plate is installed between a main beam and an oblique pull beam at the same side respectively through a two-section structure, the baffle plate self beam is used for being fixed with the oblique pull beam, a baffle connecting plate extending out of the end portion of the baffle plate is used for being welded and fixed with the tower body, the herringbone baffle plate is further realized, the fin type detachable supporting beam structure and the tower body are connected with each other, and the three structures are strong in mounting stability.
According to the invention, the main beam connecting plate is used for connecting the main beam with the tower wall, the rib plates arranged on two sides of the main beam are used for fixing the end parts of the diagonal beams, and the side connecting plate arranged at the far end of the diagonal beam is used for connecting the self beam of the herringbone baffle. The structures are matched to form a connecting structure of a main beam, a tower wall, a diagonal beam and a herringbone baffle, and then combination and fixation are realized.
In the invention, the main beam can adopt an I-shaped or T-shaped structure. The I-shaped structure and the T-shaped structure can be spliced by adopting a two-section structure. Therefore, the main beam is made of wide materials and can be applied to various steel materials such as channel steel, angle steel, I-shaped steel and the like. The main beam and the oblique pull beam adopt a movable installation mode, so that the main beam and the oblique pull beam can be pre-installed with the oblique pull beams before use, and the on-site assembly can be carried out according to actual conditions. The implementation mode not only enables the processing and the installation of the supporting beam to be simpler and more convenient, but also solves the problems that the herringbone baffle plate generates large deformation and insufficient strength when being impacted by high air speed and large load in the actual operation process. The long-period safe operation of the herringbone baffle is ensured, and particularly, for the fractionating device which is easy to coke, the main beam and the tower wall, the main beam and the diagonal beam as well as the main beam and the herringbone baffle are movably installed, so that the herringbone baffle which is serious in coke can be quickly replaced, and the overhaul period is shortened.
According to the invention, the structure is applied for simulation, and through finite element strength calculation, compared with the traditional structural beam, the thickness of the herringbone baffle plate can be greatly reduced on the premise of ensuring the strength and rigidity requirements of the herringbone baffle plate, so that the processing difficulty of the holes on the herringbone baffle plate is reduced, and the production cost is reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a schematic structural diagram of a second embodiment;
FIG. 4 is a schematic structural diagram of a third embodiment;
FIG. 5 is a schematic structural diagram of a fourth embodiment;
FIG. 6 is a schematic structural view of a main beam with bolt holes;
fig. 7 is a schematic structural view of a main beam without bolt holes.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The invention relates to a herringbone baffle with a fin-shaped detachable supporting beam, which is characterized by comprising a herringbone baffle 8 and a fin-shaped detachable supporting beam structure, wherein the fin-shaped detachable supporting beam structure comprises a main beam, a plurality of groups of oblique tension beams 4 are movably arranged on two sides of the main beam, each group of oblique tension beams are arranged in parallel at intervals, each group comprises two oblique tension beams, and the two oblique tension beams in the same group are symmetrically arranged on two sides of the main beam; the main beam comprises a vertical plate 2, a plurality of gas phase circulation holes 7 are uniformly formed in the vertical plate at intervals, each inclined pull beam is installed in a staggered mode with the gas phase circulation holes, the inclined pull beams are installed on two sides of the main beam in an inclined mode, and the end portions, far away from the main beam, of the inclined pull beams are higher than the end portions, far away from the main beam, of the inclined pull beams; one end of the herringbone baffle is fixed above a gas-phase circulation hole made by the main beam, and the other end of the herringbone baffle is fixed with the end part of the diagonal draw beam on the same side, which is far away from the main beam.
In this embodiment, a girder connecting plate 1 is installed respectively at the front and back both ends of girder, and open at riser both ends on the girder in vertical direction has two bolt holes, makes roof beam and girder connecting plate link to each other through the bolt hole, during the installation, welds the other end of girder connecting plate on the tower wall, can be guaranteeing under the prerequisite of a supporting beam intensity and rigidity like this, effectual reduction girder's height and thickness.
In the embodiment, the aperture size of the gas-phase circulation hole can be within the range of phi 10-phi 500mm under the condition of not influencing the strength of the beam.
In this embodiment, a plurality of rib plates 3 are fixedly mounted on both sides of the vertical plate of the main beam at uniform intervals, and one cable-stayed beam is movably mounted in each rib plate.
In this embodiment, the end portions of the two sides of the herringbone baffle, which are far away from the main beam, are bent downwards to form a self-beam of the baffle, the self-beam of the baffle is fixed with the side connection plate fixedly mounted on the diagonal beam, the front end and the rear end of the self-beam of the baffle are both provided with a baffle connection plate 9, and the end portion of the baffle connection plate extends out of the orthographic projection position of the self-beam of the baffle.
In this embodiment, the baffle of the chevron baffle is formed with a serrated or other continuously projecting sharp portion at the lower end of its beam.
In this embodiment, the gusset can adopt triangle-shaped, trapezoidal, rectangle or other heterotypic structures, and the specific number of gusset can be set for according to span and the width of herringbone baffle, sets up the three bolt hole that is the triangle and arranges in gusset and the lapped part of diagonal draw beam for inject the torsion of diagonal draw bar.
In this embodiment, a side connecting plate 5 is fixedly mounted at the end part of each diagonal beam far away from the main beam. Two long round holes are formed in the horizontal central line of the side connecting plate and are vertically welded to one end of the diagonal tie beam, and the end can be connected with a bolt hole in a beam of the herringbone baffle plate through a bolt during installation.
The present invention can be implemented in various embodiments for the main beam structure, and the detailed description is as follows.
Example 1: the main beam adopts a T-shaped structure, namely a transverse plate is arranged at the upper end of the vertical plate, and an opening is arranged in the herringbone baffle.
Example 2: the main beam also adopts a T-shaped structure, namely a transverse plate is manufactured at the upper end of the vertical plate, and an opening is not arranged in the herringbone baffle.
The T-shaped structure can adopt a two-section splicing structure and comprises two half beams, each half beam comprises the vertical plate, the transverse plate is bent towards one side at the upper end of the vertical plate to form an inverted L shape, and the two half beams are arranged in a back manner and are integrally installed.
Example 3: the girder adopts "worker" style of calligraphy structure, and this "worker" style of calligraphy structure can adopt integral type structures such as I-steel also can adopt two sections mosaic structure. If a two-section type splicing structure is adopted, the two-section type splicing structure comprises two half beams, each half beam comprises the vertical plate, the upper end part and the lower end part of the vertical plate are bent towards the same side to form a transverse plate to form a [ -shape, and the two half beams are arranged in a back direction and are integrally installed. The herringbone baffle is internally provided with an opening.
Example 4: the main beam adopts an I-shaped structure, and no opening is formed in the herringbone baffle.
The main beam of the supporting structure can adopt a T-shaped structure and an I-shaped structure, and can also adopt other structures with installing inclined tension beams or herringbone baffles, and the upper end surface of the main beam can be provided with a bolt hole according to the use condition.
If the structure of the embodiment 3 and the embodiment 4 is adopted, a support plate 6 is integrally fixed at the lower end parts of the vertical plates at the front end and the rear end of the main beam, the support plate is perpendicular to the vertical plate of the main beam, bolt holes are formed in the support plate at two sides of the vertical plate, and the support plate can be fixed with a support 10 installed in a tower wall.
In the embodiments 1-4, the transverse plate above the vertical plate of the main beam preferably forms a slope shape, that is, the height of the end parts at both sides is lower than that of the middle part. The upper end surface of the transverse plate can be welded with or movably mounted with the herringbone baffle, if the herringbone baffle is movably mounted with the herringbone baffle supported by the transverse plate, bolt holes with certain intervals and a certain quantity can be formed on the central line of the inclined surface of the transverse plate of the main beam along the length direction, and the herringbone baffle can be connected with the supported herringbone baffle in a bolt gasket or gasket-free mode according to the sealing requirement during mounting.
In the invention, the plurality of gas phase circulation holes manufactured in the vertical plate of the main beam are beneficial to the gas circulation at the bottom of the baffle plate, so that the gas phase distribution is more uniform. The outer end of the inclined straining beam is arranged obliquely upwards compared with the inner end, and the formed fin-shaped structure can greatly improve the supporting strength compared with the original slope-shaped structure, avoids directly welding reinforcing ribs on the lower surface of the herringbone baffle plate, ensures the maximum aperture ratio of the herringbone baffle plate and further improves the tower plate efficiency.
According to the invention, the main beam connecting plate is used for connecting the main beam with the tower wall, the rib plates arranged on two sides of the main beam are used for fixing with the end parts of the diagonal beams, and the side connecting plate arranged at the far end of the diagonal beam is used for connecting with the end parts of the herringbone baffles. The structures are matched to form a connecting structure of a main beam, a tower wall, a diagonal beam and a herringbone baffle, and then combination and fixation are realized.
In the invention, the main beam can adopt an I-shaped or T-shaped structure. The I-shaped structure and the T-shaped structure can be spliced by adopting a two-section structure. Therefore, the main beam is made of wide materials and can be applied to various steel products such as flat steel, angle steel, I-shaped steel and the like. The main beam and the oblique pull beam adopt a movable installation mode, so that the main beam and the oblique pull beam can be pre-installed with the oblique pull beams before use, and the on-site assembly can be carried out according to actual conditions. The implementation mode not only enables the processing and the installation of the supporting beam to be simpler and more convenient, but also solves the problems that the herringbone baffle plate generates large deformation and insufficient strength when being impacted by high air speed and large load in the actual operation process. The long-period safe operation of the herringbone baffle is ensured, and particularly for the fractionating device which is easy to coke, the main beam and the tower wall, the main beam and the diagonal beam, and the main beam and the herringbone baffle can be movably installed, so that the herringbone baffle which is serious in coke can be quickly replaced, and the overhaul period is shortened.
According to the invention, the structure is applied for simulation, and through finite element strength calculation, compared with the traditional structural beam, the thickness of the herringbone baffle plate can be greatly reduced on the premise of ensuring the strength and rigidity requirements of the herringbone baffle plate, so that the processing difficulty of the holes on the herringbone baffle plate is reduced, and the production cost is reduced.
While the present invention has been described with reference to preferred embodiments, it will be apparent to those skilled in the art that the present technology can be practiced with modification, or with appropriate modification and combination, of the structures and devices described herein without departing from the spirit and scope of the invention. It is expressly intended that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the spirit, scope and content of the invention.
Claims (10)
1. The utility model provides a herringbone baffle with a supporting beam can be dismantled to wing type which characterized in that: the wing-shaped detachable supporting beam structure comprises a main beam and inclined pull beams, wherein a plurality of groups of inclined pull beams are movably mounted on two sides of the main beam, the inclined pull beams are arranged in parallel at intervals, each group comprises two inclined pull beams, and the two inclined pull beams in the same group are symmetrically mounted on two sides of the main beam; the main beam comprises a vertical plate, a plurality of gas phase circulation holes are uniformly formed in the vertical plate at intervals, each inclined pull beam is installed with the gas phase circulation holes in a staggered mode, the inclined pull beams are installed on two sides of the main beam in an inclined mode, and the end portions, far away from the main beam, of the inclined pull beams are higher than the end portions, far away from the main beam, of the inclined pull beams; one end of the herringbone baffle is fixed above a gas-phase circulation hole made by the main beam, and the other end of the herringbone baffle is fixed with the end part of the diagonal draw beam on the same side, which is far away from the main beam.
2. The herringbone baffle plate with the wing-type detachable support beam of claim 1, wherein: the front end and the rear end of a main beam in the fin-type detachable supporting beam structure are respectively provided with a main beam connecting plate, one end of the main beam and one end of the main beam connecting plate are movably arranged, and the other end of the main beam connecting plate is fixedly arranged on a tower wall.
3. The herringbone baffle plate with the wing-type detachable support beam of claim 1, wherein: a plurality of rib plates are fixedly arranged on two sides of a vertical plate of a main beam in the fin type detachable supporting beam structure at uniform intervals, and one inclined pull beam is movably arranged in each rib plate.
4. The herringbone baffle plate with the wing-type detachable support beam of claim 1, wherein: and one side connecting plate is fixedly arranged at the end part, far away from the main beam, of the diagonal draw beam in each fin-type detachable supporting beam structure.
5. The herringbone baffle plate with the wing-type detachable support beam of claim 4, wherein: the herringbone baffle is characterized in that the end parts of two sides of a main beam of the herringbone baffle, which is far away from the fin-shaped detachable supporting beam structure, are bent downwards to form a baffle self beam, the baffle self beam is fixed with a side connecting plate fixedly installed on a diagonal beam, baffle connecting plates are installed at the front end and the rear end of the baffle self beam, and the end part of each baffle connecting plate extends out of the orthographic projection position of the baffle self beam.
6. A herringbone baffle plate with a wing type detachable supporting beam according to any one of claims 1 to 5, wherein: the main beam of the fin-type detachable supporting beam structure adopts an I-shaped structure, namely, transverse plates are respectively manufactured at the upper end and the lower end of each vertical plate.
7. The herringbone baffle plate with the wing-type detachable support beam of claim 6, wherein: the I-shaped structure can adopt a two-section splicing structure and comprises two half beams, each half beam comprises the vertical plate, the upper end part and the lower end part of the vertical plate are bent towards the same side to form a transverse plate to form a [ -shape, and the two half beams are arranged in a back direction and are integrally installed.
8. A herringbone baffle plate with a wing type detachable supporting beam according to any one of claims 1 to 5, wherein: the main beam of the fin-type detachable supporting beam structure adopts a T-shaped structure, namely, a transverse plate is manufactured at the upper end of the vertical plate.
9. The chevron baffle with a fin-type removable support beam of claim 8, wherein: the T-shaped structure can adopt a two-section splicing structure and comprises two half beams, each half beam comprises the vertical plate, the transverse plate is bent towards one side at the upper end of the vertical plate to form an inverted L shape, and the two half beams are arranged in a back manner and are integrally installed.
10. The chevron baffle with a fin-type removable support beam of claim 8, wherein: the supporting plate is vertically arranged with the vertical plate, and the supporting plate is provided with bolt holes at two sides of the vertical plate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011169208.8A CN112295533B (en) | 2020-10-28 | 2020-10-28 | Herringbone baffle with wing type detachable supporting beams |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011169208.8A CN112295533B (en) | 2020-10-28 | 2020-10-28 | Herringbone baffle with wing type detachable supporting beams |
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| CN112295533A true CN112295533A (en) | 2021-02-02 |
| CN112295533B CN112295533B (en) | 2024-10-25 |
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