CN201934651U - Novel anti-coking manhole structure - Google Patents
Novel anti-coking manhole structure Download PDFInfo
- Publication number
- CN201934651U CN201934651U CN2010206129013U CN201020612901U CN201934651U CN 201934651 U CN201934651 U CN 201934651U CN 2010206129013 U CN2010206129013 U CN 2010206129013U CN 201020612901 U CN201020612901 U CN 201020612901U CN 201934651 U CN201934651 U CN 201934651U
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- Prior art keywords
- coking
- manhole
- insulation plug
- novel anti
- taper
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Abstract
The utility model discloses a novel anti-coking manhole structure comprising a conical guide cylinder arranged on a container wall, a conical heat-insulating plug adaptive to the conical guide cylinder, and a manhole flange cover, wherein the conical surface of the conical heat-insulating plug is provided with a stuffing box layer in a wrapping way; the upper surface of the conical heat-insulating plug is tightly pressed with the manhole flange cover; and furthermore, a prestressed disc spring is arranged between the upper surface of the conical heat-insulating cover and the manhole flange cover. When applied to various devices where coking can happen possibly in the oil refining field and chemical field, the novel anti-coking manhole structure has the anti-coking effect that completely meets the designed anticipation, and has an ideal use effect.
Description
Technical field
The utility model relates to pressurized container or the provision for sealing in oil refining, the chemical plant installations, especially a kind of novel anti-coking manhole structure.
Background technique
The notion of manhole: oil refining, pressurized container in the chemical plant installations or provision for sealing are in order to overhaul the needs with construction and installation, and the passage that on container or apparatus casing, is provided with, generally by the manhole blind flange, construction bolt, the manhole flange be connected cylindrical shell four parts and form.At oil, (as: heavy oil catalytically cracking equipment in some device of chemical field; Coking plant; Coal chemical engineering equipment or the like) because the reaction medium in the container, be generally the gas (cracking gas of high temperature, coal gas, water vapour etc.), liquid (each composition oil, slurry oil etc.), Gu (catalyzer, reaction residues etc.) three mixtures, because when working conditions change such as reaction temperature variation, shutting down, material component variation, be easy to deposit a large amount of reaction mediums in the connection cylindrical shell inner product of common manhole when adopting common manhole, thereby be condensed into Jiao, this Jiao is often very hard, when needs are opened manhole, because burnt existence makes manhole to open, and has lost effect.
As shown in Figure 1, the working principle of the core of existing anti-coking manhole is that (annotate: in the industry, the structure that is derived from Europe generally is that columniform guiding is with bucket and insulation plug with the orientation barrel of a pairing and insulation plug; And the structure that is derived from the U.S. generally is that conical guiding is with bucket and insulation plug) fill the inner space of former manhole connecting cylinder body, thus reach the purpose of avoiding coking or few coking.At present existing anti-coking manhole defective in actual use:
Because actual use at present substantially all is the anti-coking manhole of American-European version, because their Design Mechanism is based on American-European relevant apparatus local abroad feedstock property and operational condition, and external installation and inspection standard, because above-mentioned and domestic actual conditions all exist bigger difference, so these anti-coking manholes use condition at home is also bad at present, often occur in coking between orientation barrel and insulation plug, even between the insulation plug and manhole cover of energy coking, the result is that manhole is not often opened, and causes the reason of this phenomenon as follows:
1, the gap between orientation barrel and insulation plug, owing to just simply be wrapped with at present packing material, this is easy to come off when filling in guide cylinder will being incubated, or be extruded to manhole cover one side, thereby stay bigger gap, cause high-temperature liquid state Jiao's infiltration, thereby produce coking.
2, orientation barrel, install owing to just simply cooperating between insulation plug and the manhole cover, owing to certainly will there be bigger installation deviation in the manufacture deviation reason of equipment between this three, see with regard to practical application, this gap is between 3～5mm, this gap is enough to make the burnt infiltration of high-temperature liquid state, thereby produces coking under the interior pressure effect of container.
The model utility content
At the problem that prior art exists, the purpose of this utility model is to provide the novel anti-coking manhole structure of a kind of structure through improving, can effectively improving the anti-coking effect.
For achieving the above object, the novel anti-coking manhole structure of the utility model, comprise the taper guide cylinder that is arranged on the container wall, with suitable taper insulation plug, the manhole blind flange of this taper guide cylinder, parcel is provided with the stuffing box layer on the conical surface of taper insulation plug, the upper surface of taper insulation plug compresses mutually with the manhole blind flange, and is provided with prestressing force dish spring between the upper surface of taper insulation plug and the manhole blind flange.
Further, described prestressing force dish spring is fixedly installed on the upper surface of described taper insulation plug.
Further, described taper insulation plug and stuffing box layer are made into integration.
Further, described stuffing box layer is a composite layer.
Further, described composite layer is that expanded deoxidation ceramic fiber, corundum, high temperature silicon wafer glue are composited.
Further, the end of described taper insulation plug is provided with insulating lining.
The novel anti-coking manhole structure of the utility model, in all kinds of devices that coking might take place of oil refining, chemical field, anti-coking reaches expected design fully, and using effect is very desirable.
Description of drawings
Fig. 1 is an anti-coking manhole structure schematic representation of the prior art;
Fig. 2 is the utility model structural representation.
Embodiment
As shown in Figure 2, the novel anti-coking manhole structure of the utility model, comprise the taper guide cylinder 1 that is arranged on the container wall 4, with suitable taper insulation plug 2, the manhole blind flange 3 of this taper guide cylinder 1.This novel anti-coking manhole structure is by domestic feedstock property and operational condition, and the principle of generality of domestic installation and inspection standard and standard have redesigned shape and the physical dimension and the matching gap of taper guide cylinder 1 and taper insulation plug 2.
Wherein, parcel is provided with stuffing box layer 5 on the conical surface of taper insulation plug 2, and the end of taper insulation plug 2 is provided with insulating lining 7, and stuffing box layer 5 and taper insulation plug 2 are made into integration.Stuffing box layer 5 adopts composite material to make, this composite layer is that expanded deoxidation ceramic fiber, corundum, high temperature silicon wafer glue are composited, and with this material the Sectional packings letter of an one, taper insulation plug 2 is wrapped up fully, fill the matching gap between taper guide cylinder 1 and the taper insulation plug 2, to avoid between orientation barrel and insulation plug, coking taking place.
The upper surface of taper insulation plug 2 compresses setting mutually with manhole blind flange 3, and be set with prestressing force dish spring 6 on the upper surface of taper insulation plug 2, after manhole blind flange 3 is pressed on the taper insulation plug 2, the pretightening force that prestressing force dish spring 6 produces is with the installation that closely cooperates that further guarantees between taper guide cylinder 1, taper insulation plug 2 and the manhole blind flange 3.
Pass through actual experiment, the novel anti-coking manhole structure of the utility model, in all kinds of devices that coking might take place of oil refining, chemical field, anti-coking reaches expected design fully, using effect is very desirable, basic model the use condition of 1000 ℃ all kinds of devices can both, reach ideal effect, only need just suitably adjust and can meet the demands as under higher or worse environment, using to the material and the structure of individual component.
Claims (5)
1. novel anti-coking manhole structure, it is characterized in that, this structure comprise the taper guide cylinder that is arranged on the container wall, with suitable taper insulation plug, the manhole blind flange of this taper guide cylinder, parcel is provided with the stuffing box layer on the conical surface of taper insulation plug, the upper surface of taper insulation plug compresses mutually with the manhole blind flange, and is provided with prestressing force dish spring between the upper surface of taper insulation plug and the manhole blind flange.
2. novel anti-coking manhole structure as claimed in claim 1 is characterized in that, described prestressing force dish spring is fixedly installed on the upper surface of described taper insulation plug.
3. novel anti-coking manhole structure as claimed in claim 1 is characterized in that, described taper insulation plug and stuffing box layer are made into integration.
4. novel anti-coking manhole structure as claimed in claim 3 is characterized in that described stuffing box layer is a composite layer.
5. novel anti-coking manhole structure as claimed in claim 1 is characterized in that, the end of described taper insulation plug is provided with insulating lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206129013U CN201934651U (en) | 2010-11-18 | 2010-11-18 | Novel anti-coking manhole structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206129013U CN201934651U (en) | 2010-11-18 | 2010-11-18 | Novel anti-coking manhole structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934651U true CN201934651U (en) | 2011-08-17 |
Family
ID=44446170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206129013U Expired - Lifetime CN201934651U (en) | 2010-11-18 | 2010-11-18 | Novel anti-coking manhole structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855909A (en) * | 2020-07-27 | 2020-10-30 | 西安交通大学 | Experimental device for measuring low-temperature bubble breakage characteristic of porous metal screen |
-
2010
- 2010-11-18 CN CN2010206129013U patent/CN201934651U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111855909A (en) * | 2020-07-27 | 2020-10-30 | 西安交通大学 | Experimental device for measuring low-temperature bubble breakage characteristic of porous metal screen |
| CN111855909B (en) * | 2020-07-27 | 2021-07-27 | 西安交通大学 | Experimental device for measuring low-temperature bubble breakage characteristic of porous metal screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |
|
| CX01 | Expiry of patent term |