CN212655742U - Liner anti-drop structure - Google Patents
Liner anti-drop structure Download PDFInfo
- Publication number
- CN212655742U CN212655742U CN202020643054.0U CN202020643054U CN212655742U CN 212655742 U CN212655742 U CN 212655742U CN 202020643054 U CN202020643054 U CN 202020643054U CN 212655742 U CN212655742 U CN 212655742U
- Authority
- CN
- China
- Prior art keywords
- lining
- falling
- liner
- nail
- layer
- 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.)
- Active
Links
Images
Landscapes
- Chimneys And Flues (AREA)
Abstract
A liner falling-off preventing structure comprises anchoring nails for connecting a shell and a liner, and a steel wire mesh which is tied on the nail rods of the anchoring nails and is positioned on a falling-off layer of the liner to increase the liner connecting performance of the surface of the falling-off layer. After the lining constructed by the anti-falling structure is dried, the width of the crack is less than 2mm, no penetrating crack exists, and the connection performance of the lining on the surface of the anti-falling layer is improved. The equipment adopting the anti-falling structure reduces the risk of liner falling and prolongs the service life, thereby meeting the requirement of long-period operation.
Description
Technical Field
The utility model belongs to the technical field of catalytic cracking unit, in particular to lining anti-drop structure.
Background
Catalytic cracking units hold an important position in the petroleum refining industry in our country. The reactor and regenerator system of catalytic cracking unit (hereinafter referred to as reverse regeneration system) are key equipments in catalytic cracking unit, and the high-temperature catalyst is connected among reactor, settler and regenerator by means of various channels, and can be circulated in high-speed fluidization mode so as to attain the goal of cracking raw material oil and regenerating catalyst to be regenerated. The operation condition of the reverse system equipment is severe, the operation temperature is 350-700 ℃, the flow rate of the granular catalyst is 3M/S to 23M/S, the fluidization speed is high, part of equipment is up to more than 300M/S, and normal equipment cannot operate under the working condition. Therefore, the interior of the anti-regeneration system equipment is wrapped by linings with different heat insulation and wear resistance.
Existing liners are mostly of two forms: a single-layer heat-insulating wear-resistant lining structure and a double-layer heat-insulating wear-resistant lining structure. Referring to fig. 1A, in the single-layer heat-insulating wear-resistant lining structure, the anchoring nail 4 is generally an omega-shaped or V-shaped anchoring nail, a nail rod of the anchoring nail is welded with the inner wall of the shell 1, an expansion cap 3 is additionally arranged at the top of the nail rod, and a 2mm cavity generated after the expansion cap 3 is melted in the high-temperature use process is used for absorbing the thermal expansion amount of the omega-shaped or V-shaped anchoring nail; the single-layer heat-insulating wear-resistant lining 2 is added with steel fibers according to requirements so as to increase the connection performance between the linings to improve the strength of the lining, and a formwork pouring method or a manual smearing method is adopted for construction. Referring to fig. 1B, in the double-layer heat-insulating wear-resistant lining structure, the anchoring nails 4 are generally side pull ring anchoring nails, the nail rods 401 of the anchoring nails are welded with the inner wall of the shell 1, the heat-insulating wear-resistant lining 2 is constructed by a manual smearing method, after a certain strength is achieved, the side pull rings 402 are connected with the nail rods 401 by a screw thread connection method, and then the high-wear-resistant lining 5 is smeared on the upper portion of the heat-insulating lining by the manual smearing method, wherein the thickness is generally 20-25 mm.
It is well known that in recent years, the petroleum refining industry is characterized by long-term operation to achieve the purpose of reducing energy consumption. The reasons for influencing the long-term operation of the catalytic cracking equipment are many, the unplanned shutdown caused by the lining problem accounts for a certain proportion, and the phenomena of lining heat insulation, abrasion resistance reduction, shell temperature overtemperature and the like caused by the falling of the lining are frequent. Through statistics, whether the lining is a single-layer heat-insulating wear-resistant lining or a double-layer heat-insulating wear-resistant lining, the shedding phenomenon is firstly reflected on the layer surface with the width of cracks exceeding the requirement and the shedding thickness exceeding 20mm (the section is defined as a shedding layer), so that the problem of increasing the connection performance of the lining on the surface of the shedding layer is a difficult problem to be solved urgently under any construction technology, construction environment and conditions.
Disclosure of Invention
To the problem that current lining easily drops, the utility model aims to provide a lining anti-drop structure increases on the lining abscission layer and lays stainless steel net to this increases the lining connection performance on abscission layer surface.
In order to achieve the above object, the present invention adopts the following technical solutions. According to the utility model provides a lining anti-drop structure, including the anchor nail that is used for connecting casing and lining, tie up on the nail pole of anchor nail and lie in the steel wire net of the lining connection performance on the layer that drops in order to increase the layer surface that drops on the lining.
Furthermore, the steel wire mesh is made of stainless steel wires.
Further, the wire mesh is, but not limited to, a wound hexagonal wire mesh.
Further, the steel wire mesh is tied up on the nail rod of the anchoring nail through the binding wires.
The utility model provides a lining anti-drop structure has following advantage:
1. after the lining constructed by the anti-falling structure is dried, the width of a crack is less than 2mm, no penetrating crack exists, and the connection performance of the lining on the surface of the anti-falling layer is improved;
2. the equipment adopting the anti-falling structure reduces the risk of liner falling and prolongs the service life, thereby meeting the requirement of long-period operation.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1A is a schematic structural view of a single-layer heat-insulating wear-resistant lining.
Fig. 1B is a schematic structural view of a conventional double-layer heat-insulating wear-resistant lining.
Fig. 2A is a schematic view of an embodiment of an anti-drop structure of a liner according to the present invention.
Fig. 2B is a schematic view of another embodiment of an anti-drop structure of a liner according to the present invention.
[ description of main element symbols ]
1: a housing 2: heat-insulating wear-resistant lining 3: expansion cap
4: the anchor nails 401: the nail rod 402: side pull ring
5: high wear-resistant lining 6: winding type hexagonal wire mesh 7: binding wire
Detailed Description
The present invention will be described in further detail with reference to the following detailed description of preferred embodiments and accompanying drawings.
The utility model relates to a lining anti-drop structure, including the anchor nail that is used for connecting casing and lining, tie up on the nail pole of anchor nail and lie in the steel wire net of the lining connection performance on the come-off layer of lining in order to increase the come-off layer surface.
Example one
Referring to fig. 2A, an embodiment of the present invention is applied to a single-layer heat-insulating wear-resistant lining structure. The anchor nail comprises a V-shaped anchor nail 4 and a winding type hexagonal silk screen 6, wherein the anchor nail is made of stainless steel materials; the winding type hexagonal silk screen is made of stainless steel wires with good high-temperature resistance and tensile resistance, the wire diameter is 1-1.5mm, the grid distance is 50-60mm, the winding type hexagonal silk screen not only has good tensile deformation resistance, but also is beneficial to filling lining materials due to the size of the meshes, and the winding type hexagonal silk screen is easy to bundle and then is easy to construct lining. When the single-layer heat-insulating wear-resistant lining is constructed, firstly welding the nail rod of the V-shaped anchoring nail on the shell 1; then cutting a winding type hexagonal silk screen 6 with a certain area according to actual requirements, and binding and fastening the silk screen and the nail rod of the V-shaped anchoring nail by adopting a stainless steel binding wire 7 to ensure that the silk screen is positioned at a position (namely a lining falling layer) which is 20-25mm away from the surface of the lining; and finally, erecting a formwork for pouring. After the construction is finished, no hollowing phenomenon appears through inspection.
Example two
Fig. 2B shows another embodiment of the present invention applied to a double-layered heat-insulating wear-resistant lining structure. The embodiment comprises side pull ring anchoring nails 4 and a winding type hexagonal silk screen 6, wherein the anchoring nails are made of stainless steel materials; the winding type hexagonal silk screen is made of stainless steel wires with good high-temperature resistance and tensile resistance, the wire diameter is 1-1.5mm, the grid distance is 50-60mm, the winding type hexagonal silk screen not only has good tensile deformation resistance, but also is beneficial to filling lining materials due to the size of the meshes, and the winding type hexagonal silk screen is easy to bundle and then is easy to construct lining. When the double-layer heat-insulating wear-resistant lining is constructed, firstly welding the nail rod 401 of the side pull ring anchoring nail on the shell 1; then manually tamping the heat-insulating wear-resistant lining 2; then, binding and firmly binding the silk screen and the upper part of the nail rod 401 of the side pull ring anchoring nail by adopting a stainless steel binding wire 7, and fastening the side pull ring 402 on the nail rod 401, wherein the silk screen is positioned on the shedding layer; and finally, manually tamping the high-wear-resistance lining 5 for construction. After the construction is finished, no hollowing phenomenon appears through inspection.
According to the requirement of GB/T50474, after the lining is constructed and dried, the crack width can not be greater than 3 mm. After detection, after the linings constructed in the first embodiment and the second embodiment are dried, the width of the crack is smaller than 2mm, and no penetrating crack exists, so that the lining on the surface of the release layer is proved to have better connectivity and higher connection strength, and the overall connection performance of the lining is improved.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. The protection scope of the present invention should be understood by those skilled in the art without departing from the structure of the present invention or exceeding the scope defined by the claims.
Claims (3)
1. The utility model provides a lining anti-drop structure, is including the anchor nail that is used for connecting casing and lining, its characterized in that still includes to tie up on the nail pole of anchor nail and lie in the steel wire net of the lining connection performance in order to increase the surface of abscission layer on the abscission layer of lining, and the steel wire net is winding type hexagon wire net.
2. A lining drop-off prevention structure according to claim 1, wherein the steel wire net is made of stainless steel wires.
3. A lining drop-off prevention structure according to claim 1, wherein the steel wire mesh is tied to the shank of the anchor nail by a binding wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020643054.0U CN212655742U (en) | 2020-04-24 | 2020-04-24 | Liner anti-drop structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020643054.0U CN212655742U (en) | 2020-04-24 | 2020-04-24 | Liner anti-drop structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212655742U true CN212655742U (en) | 2021-03-05 |
Family
ID=74765651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020643054.0U Active CN212655742U (en) | 2020-04-24 | 2020-04-24 | Liner anti-drop structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212655742U (en) |
-
2020
- 2020-04-24 CN CN202020643054.0U patent/CN212655742U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20180007003A (en) | Monolithic refractory structure | |
| CN212655742U (en) | Liner anti-drop structure | |
| CN107100313A (en) | A kind of antidetonation hollow insulation wallboard and its metal securing member | |
| CN203755730U (en) | External prestress core safety containment shell | |
| CN207313663U (en) | A kind of graphite bars of steel wire infantees | |
| CN210985506U (en) | High-strength aging-resistant power cable protection pipe | |
| CN110397177A (en) | Clad steel U-shaped antidetonation steelframe and construction method | |
| CN100513960C (en) | Rotary kiln hook nail arrangement method | |
| CN103821546B (en) | A kind of pile-type prestress anchorage cable of High-geotemperature tunnel support | |
| CN202031185U (en) | Outer wall hanging sandwich insulating layer | |
| CN206919680U (en) | A kind of sealing structure of industrial furnace circle access hole | |
| CN112301888A (en) | Suspension bridge main cable with inner gas transmission pipeline | |
| CN100520264C (en) | Furnace brickwork using metal anchor device as framework and its construction technology | |
| CN219882832U (en) | Novel chain tortoise shell net | |
| CN212642201U (en) | Novel wear-resisting safe plain net | |
| CN201627205U (en) | High-strength injection pipe | |
| CN211248306U (en) | Steel ladle and steel ladle cover thereof | |
| CN210802036U (en) | Heat-insulation wear-resistant single-layer furnace lining anchoring structure | |
| CN213018158U (en) | High-temperature-resistant and high-pressure-resistant rubber pipe | |
| CN218643667U (en) | Reinforced concrete prefabricated member for enhancing plasticity | |
| CN201184480Y (en) | Walking beam type furnace water-cooling pipe fiber bundling structure | |
| CN203717000U (en) | Pile type pre-stressed anchor cable for high-ground-temperature tunnel supporting | |
| CN210050165U (en) | Sectional type heat preservation nail of special compound incubation structure of CL structural system | |
| CN210827899U (en) | Novel non-dismantling formwork net rack plate with outer wall body | |
| CN210827958U (en) | Self-insulation formwork with fastening bracket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |