CN202829955U - Packing type overlap joint structure for coke tower skirt - Google Patents
Packing type overlap joint structure for coke tower skirt Download PDFInfo
- Publication number
- CN202829955U CN202829955U CN201220202154.5U CN201220202154U CN202829955U CN 202829955 U CN202829955 U CN 202829955U CN 201220202154 U CN201220202154 U CN 201220202154U CN 202829955 U CN202829955 U CN 202829955U
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- CN
- China
- Prior art keywords
- skirt
- cylindrical shell
- coke
- tower
- coke drum
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/02—Stationary retorts
- C10B1/04—Vertical retorts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
The utility model discloses a packing type overlap joint structure for a coke tower skirt. The packing type overlap joint structure comprises a skirt upper semi-cylinder body (2) and a skirt lower support body (3) which form an integrated skirt. The integrated skirt is in overlap joint with an integrated tower body comprising a coke tower cylinder body (1) and a coke tower taper body (4). The inner diameter of the skirt lower support body (3) is identical to the inner diameter of the coke tower cylinder body (1), and the outer diameter of the skirt lower support body (3) is identical to the outer diameter of the coke tower cylinder body (1). The skirt upper semi-cylinder body (2) is pressed into an arc to be closely fit with the outer surface of the coke tower taper body (4) to form a structure wherein the skirt packs part of the tower body and the skirt supports the tower body. According to the packing type overlap joint structure for the coke tower skirt, the stress concentration can be reduced, the crack producing probability is reduced, the structure is simple, the manufacture is facilitated, and the cost is saved.
Description
Technical field
The utility model relates to a kind of petrochemical equipment, and particularly, the utility model relates to the syndeton of a kind of skirt of coke tower and cylindrical shell.
Background technology
Coke drum is a kind of thermal fatigue pressurized vessel, and its service temperature rose to from normal temperature in 48 hours and is down to normal temperature about 500 ℃ again, and the stressed complexity of its skirt is the easiest position that crackle occurs.The cylindrical shell of coke drum and the syndeton of skirt generally have following four kinds of patterns:
1, general docking pattern, as shown in Figure 1, it is simple in structure, but easily makes stress concentration, thereby cracks.
2, general connecting form, as shown in Figure 2, it is simple in structure, but easily makes stress concentration, thereby cracks.The serious consequence that crack propagation can cause tower body to sink and tilt.
3, built-up welding pattern, as shown in Figure 3, the stress concentration factor of its structure is less, the possibility that cracks is little, but the manufacturing processed of said structure is comparatively complicated, and required welding job amount is larger, is conducive to discharge stress although slot in skirt hole (being dilatation joint) is set, preventing weld cracking, but the keyhole on dilatation joint top still easily cracks.
4, whole pattern as shown in Figure 4, adopts solid forging, and its stress concentration factor is compared less with built-up welding formula structure, but the manufacture difficulty of solid forging is large, and its manufacturing cost is up to 1/10th of the coke drum cost.
US Patent No. 2007/0215452, " STRUCTURE FOR EXTREME THERMAL CYCLING " discloses a kind of structure for very hot circulation, and it comprises tower body and strut member, the lower tilt of described tower body, the part of described strut member and described tower body bottom are same obliquity.Yet, the disclosed structure of foregoing invention, owing to the internal diameter of skirt (being support element 14) internal diameter less than tower body (being vessel12), the weight of tower will cause very large moment of flexure to skirt, this will greatly reduce the life-span of tower.
The utility model content
The stress concentration that has for the syndeton of improving existing coke drum cylindrical shell and skirt, easily crack, make complicated problem, the utility model provides a kind of skirt of coke tower packaging type bridging arrangement, this structure can reduce stress concentration, reduce the possibility that cracks, prolong the fatigue lifetime of coke drum, make the coke drum safety and reliability.
The technical solution of the utility model is,
A kind of skirt of coke tower packaging type bridging arrangement, described bridging arrangement comprise skirt top half cylindrical shell 2 and skirt lower support body 3, and described pair of part cylindrical shell integral type is connected to form skirt; Described skirt and coke drum cylindrical shell 1 overlap joint; Described skirt top half cylindrical shell 2 is pressed into interior circular arc so that the intimate of itself and described coke drum cylindrical shell 1 and coke drum cone 4 is fitted, and forms skirt with the structure of the local parcel of tower body, and described skirt is held described tower body.
For avoiding the generation of general skirt dilatation joint top keyhole crackle, described skirt top half cylindrical shell 2 is offered the U-shaped expansion joint structure along the circumferential direction of this coke drum tower body outer wall, offering bottom keyhole 6 described bottom keyholes in described U-shaped expansion joint structure lower end is stop holes, is used for preventing that the dilatation joint bottom from further cracking.
Concrete, described U-shaped expansion joint structure is arranged on half cylindrical shell 2 of described skirt top along part, and is one group of U-shaped dilatation joint 5, and is equidistant between each bar dilatation joint.
Two side edges of described U-shaped dilatation joint 5 are not affixed with described coke drum cylindrical shell 1; It is affixed that skirt top half cylindrical shell 2 between each described U-shaped dilatation joint 5 is wavy and described coke drum cylindrical shell 1.
Skirt top half cylindrical shell 2 is wavy and described coke drum cylindrical shell 1 welding; The described angle that is wavy skirt top half cylindrical shell 2 is 30 degree.
The internal diameter of described skirt is identical until the external diameter of the external diameter of this skirt and this coke drum cylindrical shell 1 is identical with the internal diameter of described coke drum cylindrical shell 1.
As shown in Figure 5 and Figure 6, the utility model STRENGTH ON COKE tower cylindrical shell and the existing syndeton of skirt are carried out Improvement and perfection, and its concrete measure that adopts is:
1) in the integral structure that tower body and skirt with the integral structure that comprises coke drum cylindrical shell 1 and coke drum cone 4 overlap, make the internal diameter of described skirt lower support body 3 identical with the internal diameter of described coke drum cylindrical shell 1, the external diameter of skirt lower support body 3 is identical with the external diameter of coke drum cylindrical shell 1, described skirt top half cylindrical shell 2 is pressed into circular arc so that the intimate of itself and described coke drum cone 4 is fitted, form skirt with the structure of the local parcel of tower body, described skirt is held described tower body.Said structure mainly has following effect: the 1. stressed minimizing of overlapping weld, the security of weld seam increases.Even 2. the overlapping weld of skirt and tower body cracking can not cause that tower body sinks or tilts yet.
2) described skirt top half cylindrical shell 2 is along the equidistant U-shaped dilatation joint 5 of offering of the circumferential direction of this skirt, described U-shaped dilatation joint 5 both sides not with the coke drum barrel soldering, the lower end of this U-shaped dilatation joint 5 offers bottom keyhole 6, and does not have the top keyhole.Said structure mainly has following effect: 1. avoided the generation of general skirt dilatation joint top keyhole crackle.2. the expand skirt cylindrical shell restraint force bear of tower body is little, and thermal stresses reduces, and can prolong the fatigue lifetime of coke drum.
3) described skirt top half cylindrical shell 2 welds with the waviness track mutually with described coke drum cylindrical shell 1 between described U-shaped dilatation joint.Said structure makes the length of weld seam increase the stressed minimizing of unit length weld seam on the skirt circumferential direction, thereby the security that has improved skirt.
In addition, compare with existing overlaying-type structure, manufacturing processed of the present utility model is simple, and the welding job amount is little; Compare with existing solid forging structure, the utility model manufacture difficulty is lower, thereby has saved cost.
Description of drawings
Fig. 1 is the general syndeton of docking pattern of skirt of coke tower and cylindrical shell in the prior art
Fig. 2-1 is the syndeton overall diagram of the general connecting form of skirt of coke tower and cylindrical shell in the prior art;
Fig. 2-2 is the syndeton partial enlarged drawing of the general connecting form of skirt of coke tower and cylindrical shell in the prior art;
Fig. 3-1 is the syndeton overall diagram of the built-up welding pattern of skirt of coke tower and cylindrical shell in the prior art;
Fig. 3-2 is the syndeton partial enlarged drawing of the built-up welding pattern of skirt of coke tower and cylindrical shell in the prior art;
Fig. 4-1 is the syndeton overall diagram of the whole pattern of skirt of coke tower and cylindrical shell in the prior art;
Fig. 4-2 is the syndeton partial enlarged drawing of the whole pattern of skirt of coke tower and cylindrical shell in the prior art;
Fig. 5 is skirt of coke tower packaging type bridging arrangement of the present utility model
Fig. 6 is that the A of Fig. 5 is to view
Description of reference numerals:
1-coke drum cylindrical shell; 2-skirt top half cylindrical shell; 3-skirt lower support body; 4-coke drum cone; 5-U shape dilatation joint; 6-dilatation joint bottom keyhole; The A-cylindrical shell; The B-cone; The C-skirt; The whole body of forging of D-
D
i-coke drum cylinder internal diameter; D
0-skirt top half cylinder internal diameter; D
1-skirt lower support body internal diameter; R
1The arc radius of-cone
R
2-skirt top half cylindrical shell top arc radius; R
3-skirt top half cylindrical shell outer arc radius; δ
0The wall thickness of-coke drum cylindrical shell (or cone); δ
1The wall thickness of-skirt cylindrical shell; B-U shape dilatation joint width
Embodiment
Hereinafter in connection with embodiment, the utility model is elaborated.
Skirt of coke tower packaging type bridging arrangement of the present utility model as shown in Figure 5, it comprises skirt top half cylindrical shell 2 and skirt lower support body 3, described skirt top half cylindrical shell 2 and described skirt lower support body 3 form the skirt of integral structures, the tower body overlap joint of this skirt and the integral structure that comprises coke drum cylindrical shell 1 and coke drum cone 4, described skirt of coke tower packaging type bridging arrangement is characterised in that: the identical (D of internal diameter of the internal diameter of described skirt lower support body 3 and described coke drum cylindrical shell (1)
1=D
i), the identical (D of external diameter of the external diameter of skirt lower support body 3 and coke drum cylindrical shell 1
I+δ
0=D
1+ δ
1), the arc radius of described coke drum cone 4 is R
1, described skirt top half cylindrical shell 2 is pressed into circular arc, and this skirt top half cylindrical shell top arc radius is R
2(R
2=R
1+ δ
0), (D so that the intimate of itself and tower body is fitted
0=D
i+ 2 δ
0), forming skirt with the structure of the local parcel of tower body, described skirt is held described tower body.
As shown in Figure 6, described skirt top cylindrical shell 2 is along the equidistant U-shaped dilatation joint 5 of offering of the circumferential direction of this skirt, two side edges of described U-shaped dilatation joint 5 not with the coke drum barrel soldering, the lower end of this U-shaped dilatation joint 5 offers bottom keyhole 6.The width of described U-shaped dilatation joint is b.Described skirt top half cylindrical shell 2 welds with the waviness track mutually with described coke drum cylindrical shell 1 between its U-shaped dilatation joint.
Claims (6)
1. a skirt of coke tower packaging type bridging arrangement is characterized in that, described bridging arrangement comprises skirt top half cylindrical shell (2) and skirt lower support body (3), and described pair of part cylindrical shell integral type is connected to form skirt; Described skirt and coke drum cylindrical shell (1) overlap joint; Described skirt top half cylindrical shell (2) is pressed into interior circular arc so that the intimate of itself and described coke drum cylindrical shell (1) and coke drum cone (4) thereof is fitted, and forms skirt with the structure of the local parcel of tower body, and described skirt is held described tower body.
2. a kind of skirt of coke tower packaging type bridging arrangement as claimed in claim 1 is characterized in that:
The internal diameter of described skirt lower support body (3) is identical with the internal diameter of described coke drum cylindrical shell (1), and the external diameter of skirt lower support body (3) is identical with the external diameter of coke drum cylindrical shell (1).
3. a kind of skirt of coke tower packaging type bridging arrangement as claimed in claim 1 is characterized in that:
Described skirt top half cylindrical shell (2) is offered the U-shaped expansion joint structure along the circumferential direction of this coke drum tower body outer wall, is provided with bottom keyhole (6) at described U-shaped expansion joint structure.
4. a kind of skirt of coke tower packaging type bridging arrangement as claimed in claim 3 is characterized in that:
It is upper along part that described U-shaped expansion joint structure is arranged on described skirt top half cylindrical shell (2), and be one group of U-shaped dilatation joint (5), equidistant between each bar dilatation joint.
5. claim 3 or 4 described a kind of skirt of coke tower packaging type bridging arrangements is characterized in that:
Described U-shaped dilatation joint (5) two side edges are not affixed with described coke drum cylindrical shell (1); It is affixed that each described U-shaped dilatation joint (5) skirt top half cylindrical shell (2) is wavy and described coke drum cylindrical shell (1).
6. a kind of skirt of coke tower packaging type bridging arrangement as claimed in claim 5 is characterized in that:
Described skirt top half cylindrical shell (2) is wavy and described coke drum cylindrical shell (1) welding; And the described angle that is wavy group's seat top half cylindrical shell is 30 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220202154.5U CN202829955U (en) | 2012-05-07 | 2012-05-07 | Packing type overlap joint structure for coke tower skirt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220202154.5U CN202829955U (en) | 2012-05-07 | 2012-05-07 | Packing type overlap joint structure for coke tower skirt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202829955U true CN202829955U (en) | 2013-03-27 |
Family
ID=47941710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220202154.5U Expired - Fee Related CN202829955U (en) | 2012-05-07 | 2012-05-07 | Packing type overlap joint structure for coke tower skirt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202829955U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179030A (en) * | 2015-08-28 | 2015-12-23 | 杭州汽轮机股份有限公司 | Upward exhaust type welded turbine condensing exhaust hood |
| CN105416908A (en) * | 2015-12-15 | 2016-03-23 | 江阴中南重工有限公司 | Tower provided with skirt |
| CN107127433A (en) * | 2017-05-26 | 2017-09-05 | 南京工业大学 | A kind of coke drum butt welding process |
| CN107384468A (en) * | 2017-05-26 | 2017-11-24 | 南京工业大学 | A kind of coke drum and its manufacture method |
| CN107584231A (en) * | 2017-10-23 | 2018-01-16 | 张化机（苏州）重装有限公司 | A kind of tower welding structure |
| CN108608175A (en) * | 2018-06-23 | 2018-10-02 | 浙江智海化工设备工程有限公司 | A kind of welding method controlling tower skirt base water Pingdu using cast iron platform |
| CN112061623A (en) * | 2020-09-24 | 2020-12-11 | 华东理工大学 | Reduce self-heating device of skirt thermal stress |
-
2012
- 2012-05-07 CN CN201220202154.5U patent/CN202829955U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105179030A (en) * | 2015-08-28 | 2015-12-23 | 杭州汽轮机股份有限公司 | Upward exhaust type welded turbine condensing exhaust hood |
| CN105416908A (en) * | 2015-12-15 | 2016-03-23 | 江阴中南重工有限公司 | Tower provided with skirt |
| CN107127433A (en) * | 2017-05-26 | 2017-09-05 | 南京工业大学 | A kind of coke drum butt welding process |
| CN107384468A (en) * | 2017-05-26 | 2017-11-24 | 南京工业大学 | A kind of coke drum and its manufacture method |
| CN107127433B (en) * | 2017-05-26 | 2019-03-26 | 南京工业大学 | A kind of coke drum butt welding process |
| CN107384468B (en) * | 2017-05-26 | 2019-04-09 | 南京工业大学 | A kind of coke drum and its manufacturing method |
| CN107584231A (en) * | 2017-10-23 | 2018-01-16 | 张化机（苏州）重装有限公司 | A kind of tower welding structure |
| CN108608175A (en) * | 2018-06-23 | 2018-10-02 | 浙江智海化工设备工程有限公司 | A kind of welding method controlling tower skirt base water Pingdu using cast iron platform |
| CN108608175B (en) * | 2018-06-23 | 2020-04-28 | 浙江智海化工设备工程有限公司 | Welding method for controlling levelness of tower skirt foundation by cast iron platform |
| CN112061623A (en) * | 2020-09-24 | 2020-12-11 | 华东理工大学 | Reduce self-heating device of skirt thermal stress |
| CN112061623B (en) * | 2020-09-24 | 2022-04-01 | 华东理工大学 | Reduce self-heating device of skirt thermal stress |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20170507 |