CN103615623A - Expansion joint used for cyclone separator - Google Patents
Expansion joint used for cyclone separator Download PDFInfo
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- CN103615623A CN103615623A CN201310615346.8A CN201310615346A CN103615623A CN 103615623 A CN103615623 A CN 103615623A CN 201310615346 A CN201310615346 A CN 201310615346A CN 103615623 A CN103615623 A CN 103615623A
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- expansion joint
- entrance point
- bellows
- pipe
- point pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention belongs to the technical field of petrifaction expansion joint compensation, and provides an expansion joint used for a cyclone separator. The expansion joint used for the cyclone separator comprises an outlet end pipe (9), an inlet end pipe (1) and a corrugated tube (4). One end of the inlet end pipe (1) is connected with a device, the inner diameter of the inlet end pipe (1) is the same as the inner diameter of the device connected with the inlet end pipe (1), the other end of the inlet end pipe (1) is located in the outlet end pipe (9), and therefore smoke can stably pass through the expansion joint, and impact of high-speed smoke on the inlet end pipe (1) can be avoided. The two ends of the corrugated tube (4) are provided with a supporting annular plate I (7) and a supporting annular plate II (2) respectively. A gap exists between the supporting annular plate I (7) and the inlet end pipe (1), and therefore gas pressure can enter the gap, and the displacement compensation function can be achieved. A plurality of air holes (10) are formed in the supporting annular plate II (2), and therefore the internal pressure of the corrugated tube and the external pressure of the corrugated tube can be communicated, and the design pressure and the work pressure of the corrugated tube can be lowered.
Description
Technical field
The invention belongs to petrochemical industry expansion joint compensation technique field, specifically relate to a kind of cyclone separator means expansion joint.
Background technique
In FCC refining catalytic cracking unit regenerator flue gas out, contain more small catalyst particles, approximately 15 microns of its average diameters, when using cigarette machine recovered energy, in order to reduce in flue gas solid microparticle to the erosion of cigarette machine blade, wearing and tearing, guarantee cigarette captain cycle safe operation, the three-stage cyclone separators that use are isolated the catalyst particles in flue gas more at present, the catalyst granules content that makes particle diameter in flue gas be greater than 10 microns is less than 3%, and it is vertical that in flue gas, catalyst powder dust content is less than 100 milligrams/mark; Flue gas after three-stage cyclone separator separation enters flue gas turbine expander expansion workmanship recovered energy, therefore three-stage cyclone separator is one of key equipment of FCC refining catalytic cracking unit energy-recuperation system, the quality of its performance and the quality that manufactures and designs quality, directly affect the utilization efficiency of cigarette machine and the economic benefit of life-span ，Bing Dui enterprise has a direct impact.
Fig. 1 is the structure diagram of three-stage cyclone separator, inner walls has the insulating and wearing-resistant lining of 100 ~ 120mm, therefore housing can design by cold-walled vessel (200 ℃ of wall temperature <), but the distortion of the thermal expansion difference between the internals of high temperature and housing, impact shock that high velocity air causes, level cyclone separator internal partition and alignment error etc. need to be compensated by the expansion joint being arranged on central intake pipe.Development regenerative response temperature due to RFCC improved in recent years, by 640 ~ 660 ℃ of past distillate catalytic cracking, be increased to 700 ~ 720 ℃, even higher, therefore, the hot strength that causes the internals such as dividing plate reduces, stress increases, and adds that flue gas carries out high speed impact with the intake velocity of 25m/s left and right, causes the internals such as dividing plate to be out of shape expansion joint serious, drawing crack center smoke inlet pipe, cause three to revolve separation effect degradation, affect the safe operation of cigarette machine.
The conventional expansion joint structure pattern for cyclone separator inside is shown in Fig. 2, and this expansion joint is single axial, outlet end pipe 9, entrance point pipe 1, bellows 4 and guide shell 12, consists of, and is mainly used to absorb axial displacement; Described bellows is one group, and the two ends of bellows are connected with outlet end pipe 9, entrance point pipe 1 respectively; Described guide shell 12 is positioned at bellows, and has gap between guide shell and bellows; One end of guide shell is connected with entrance point pipe 1 by lining baffle ring 13, and the other end is cantilever structure, is positioned at outlet end pipe 9; The detachable safety cover 6 of outer installment at expansion joint, prevents the direct erosion bellows of external agency, plays protection bellows action; The type that said structure expansion joint lost efficacy is: the one, and under high temperature, high stress, bellows is excessive because being out of shape, and produces cracking; Although the pressure difference of bellows inside and outside is very little, but because its inside and outside is not communicated with, need to be according to one-sided pressure design during design, therefore for guaranteeing high temperature and one-sided higher design pressure, the wall thickness of bellows is thicker could meet intensity needs, therefore its work rigidity is larger, under pressure, expansion joint is also large to the connection device active force at two ends (active force is the elastic reaction sum that the pressure thrust that produces on expansion joint bellows of pressure-acting and expansion joint compensate for displacement cause, and is mainly the elastic reaction that expansion joint compensate for displacement causes); Simultaneously because bellows only has one group, its main compensating axial displacement, (lateral stiffness is large) limited in one's ability of compensate for lateral displacement, if the large lateral displacement of compensate for slower can produce very large active force to equipment; The 2nd, swiftly flowing flue gas runs into the guide shell of expansion joint; flow velocity changes; the cantilever end of guide shell is subject to airflow scouring in addition; can cause dither; in addition the corrosion of flue gas medium; the attachment weld that easily causes guide shell and outlet end pipe produces cracking, in serious situation, even can cause that guide shell comes off, and loses the protective action to bellows.Therefore the structure of above-mentioned expansion joint, can affect equipment and the long period safe operation of himself.
Summary of the invention
The object of the invention is to propose a kind of cyclone separator means expansion joint, can solve the technical barrier in background technique, guarantee the long period safe operation of expansion joint and equipment.
The present invention adopts following technological scheme for completing above-mentioned purpose:
A cyclone separator means expansion joint, described expansion joint includes outlet end pipe, entrance point pipe and bellows; Play one end of described entrance point pipe of guide functions with equipment joins and a guide functions, the internal diameter of described entrance point pipe is identical with the internal diameter of connected equipment, the other end that plays the described entrance point pipe of guide functions is positioned at outlet end pipe, make flue gas pass through stably expansion joint, avoid high speed flue gas to playing the impact of the entrance point pipe of guide functions; Described bellows has been arranged on the entrance point pipe outside of guide functions, and its two ends are respectively arranged with to be supported ring flat-plate I and support ring flat-plate II; Described support ring flat-plate I is nested with on the described entrance point pipe that plays guide functions, and is connected with described outlet end pipe; Between described support ring flat-plate I and described entrance point pipe, there is gap, gas pressure can be entered, support ring flat-plate I simultaneously and can realize relative displacement with the entrance point pipe that plays guide functions, realize bit shift compensation function; Described support ring flat-plate II is nested with on the described entrance point pipe that plays guide functions and is welded to connect with entrance point pipe; In described support ring flat-plate II, there are a plurality of air holes, the internal pressure of bellows is connected with external pressure, reduce design pressure and the working pressure of bellows.
The entrance point pipe of described guide functions and the inwall of outlet end pipe all have wear resistance lining.
Described bellows is two groups, and the bellows described in two groups is connected as a single entity by middle adapter, has increased axial displacement compensation ability, lateral displacement compensation ability and the angular displacement compensation ability of bellows.
Described expansion joint is provided with detachable safety cover; Described detachable safety cover is positioned at the outside of bellows, and described detachable safety cover is connected with outlet end pipe.
The diameter that supports the above air hole of ring flat-plate II is less than the diameter of dust granules in flue gas.
A kind of cyclone separator means expansion joint that the present invention proposes, designs a plurality of air holes in described support ring flat-plate II, with so that the internal pressure of bellows is connected with external pressure, reduces design pressure and the working pressure of bellows; Described bellows can be selected thin-wall corrugated tube, can meet bearing requirements, thereby has reduced the work rigidity of expansion joint, can greatly reduce the active force of expansion joint to equipment, thereby improve the functional reliability of equipment simultaneously; Because of bellows, in device, operating temperature is up to 700 ℃ of left and right in addition, and bellows material is Langaloy noble metal, adopts this structure, on the basis meeting the demands, can reduce costs 40% left and right; The one end of playing the entrance point pipe of guide functions directly join with equipment and the internal diameter of its internal diameter and connected equipment consistent, make flue gas can pass through reposefully expansion joint, avoid the impact of high speed flue gas to guide shell, solved common guide shell and the end pipe attachment weld cracking problem that even comes off; Two groups of bellowss are set, have improved it and compensated the rise ability of displacement of thermotropism in many ways, greatly reduce the lateral stiffness of expansion joint bellows, also greatly reduce the active force to equipment that expansion joint compensation thermal walking causes; To sum up, the present invention not only can improve the functional reliability of expansion joint self, and has reduced the active force to equipment, has guaranteed the long period safe operation of expansion joint and equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of three-stage cyclone separator.
Fig. 2 is the structural representation of the interior expansion joint of cyclone separator in prior art.
Fig. 3 is structural representation of the present invention.
Fig. 4 is the partial enlarged drawing of A part in Fig. 3.
Fig. 5 is the partial enlarged drawing of B part in Fig. 3.
In figure: 1, entrance point pipe, 2, support ring flat-plate II, 3, pipe nipple II, 4, bellows, 5, middle adapter; 6, detachable safety cover, 7, support ring flat-plate I, 8, wear resistance lining, 9, outlet end pipe; 10, air hole, 11, pipe nipple I, 12, guide shell, 13, lining baffle ring.
Embodiment
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings:
As shown in Figure 3, a kind of cyclone separator means expansion joint, described expansion joint includes outlet end pipe 9, plays entrance point pipe 1 and the bellows 4 of guide functions; The one end of playing the described entrance point pipe 1 of guide functions joins by connecting tube and equipment, and the other end is positioned at outlet end pipe 9; The described entrance point pipe 1 and the internal diameter of connecting tube that play guide functions are identical with the internal diameter of connected equipment, make flue gas pass through stably expansion joint, avoid the impact of high speed flue gas to guide shell, are conducive to the protection to bellows; Play the entrance point pipe 1 of guide functions and the inwall of outlet end pipe 9 and all there is wear resistance lining 8; Described bellows 4 is two groups, and the bellows 4 described in two groups is connected as a single entity by middle adapter 5, has increased axial displacement compensation ability, lateral displacement compensation ability and the angular displacement compensation ability of bellows; Adopt the expansion joint of two groups of bellows design, its axial rigidity and lateral stiffness reduce greatly, the elastic acting force to equipment in the time of therefore can reducing expansion joint work; Described bellows 4 has been arranged on entrance point pipe 1 outside of guide functions, and the two ends of described bellows 4 are connected with support ring flat-plate I 7, support ring flat-plate II 2 by pipe nipple I 11, pipe nipple II 3 respectively; Described support ring flat-plate I 7 is nested with and is rising on the entrance point pipe 1 of guide functions, and is connected with outlet end pipe 9; Between described support ring flat-plate I 7 and the described entrance point pipe 1 that plays guide functions, have gap, gas pressure can enter, and supports ring flat-plate I 7 simultaneously and can realize relative displacement with the entrance point pipe 1 that plays guide functions, realizes bit shift compensation function; Described support ring flat-plate II 2 is nested with on the described entrance point pipe 1 that plays guide functions and is welded to connect with entrance point pipe 1; In described support ring flat-plate II 2, have a plurality of air holes 10, the diameter that supports ring flat-plate II 2 the above air hole is less than the diameter of dust granules in flue gas, can make the internal pressure of bellows be connected with external pressure, reduces design pressure and the working pressure of bellows; The wall thickness of bellows is mainly used to meet high temperature displacement fatigue strength, can select thin-wall corrugated tube, and during work, bellows expansion joint can reduce greatly to the active force of equipment.
Described expansion joint is provided with detachable safety cover 6; Described detachable safety cover is positioned at the outside of bellows, and described detachable safety cover 6 is connected with outlet end pipe 9; The structure of described detachable safety cover is identical with structure of the prior art, at this, does not do too much explanation.
Claims (5)
1. a cyclone separator means expansion joint, described expansion joint includes outlet end pipe (9), entrance point pipe (1) and bellows (4); It is characterized in that: the one end of playing the described entrance point pipe (1) of guide functions join with equipment and the internal diameter of entrance point pipe (1) internal diameter and connected equipment identical, the other end that plays the described entrance point pipe (1) of guide functions is positioned at outlet end pipe (9), make flue gas pass through stably expansion joint, avoid the impact of high speed flue gas to entrance point pipe (1); Described bellows (4) has been arranged on entrance point pipe (9) outside of guide functions, and its two ends are respectively arranged with to be supported ring flat-plate I (7) and support ring flat-plate II (2); Described support ring flat-plate I (7) is nested with at the described entrance point pipe (1) that plays guide functions upper, and is connected with described outlet end pipe (9); Between the entrance point pipe (1) of described support ring flat-plate I (7) and a guide functions, there is gap, gas pressure can be entered, support ring flat-plate I (7) simultaneously and can realize relative displacement with the entrance point pipe (1) that plays guide functions, realize bit shift compensation function; Described support ring flat-plate II (2) be nested with upper at the described entrance point pipe (1) that plays guide functions and with entrance point pipe (1) be welded to connect; In described support ring flat-plate II (2), there are a plurality of air holes (10), the internal pressure of bellows is connected with external pressure, reduce design pressure and the working pressure of bellows.
2. a kind of cyclone separator means expansion joint according to claim 1, is characterized in that: play the described entrance point pipe (1) of guide functions and the inwall of outlet end pipe (9) and all have wear resistance lining (8).
3. a kind of cyclone separator means expansion joint according to claim 1, it is characterized in that: described bellows (4) is two groups, bellows described in two groups is connected as a single entity by middle adapter (6), has increased axial displacement compensation ability, lateral displacement compensation ability and the angular displacement compensation ability of bellows.
4. a kind of cyclone separator means expansion joint according to claim 1, is characterized in that: described expansion joint is provided with detachable safety cover (6); Described detachable safety cover (6) is positioned at the outside of bellows, and described detachable safety cover (6) is connected with outlet end pipe (1).
5. a kind of cyclone separator means expansion joint according to claim 1, is characterized in that: the diameter that supports the above air hole of ring flat-plate II (2) (10) is less than the diameter of dust granules in flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615346.8A CN103615623B (en) | 2013-11-28 | 2013-11-28 | Cyclone separator means expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615346.8A CN103615623B (en) | 2013-11-28 | 2013-11-28 | Cyclone separator means expansion joint |
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| Publication Number | Publication Date |
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| CN103615623A true CN103615623A (en) | 2014-03-05 |
| CN103615623B CN103615623B (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310615346.8A Active CN103615623B (en) | 2013-11-28 | 2013-11-28 | Cyclone separator means expansion joint |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976480A (en) * | 2015-05-13 | 2015-10-14 | 天津城建大学 | Telescopic large-deformation soft steel corrugated connector suitable for underground pipe network |
| CN107606327A (en) * | 2017-10-31 | 2018-01-19 | 新中天环保股份有限公司 | solvent recovery pipeline |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE901608C (en) * | 1949-05-19 | 1954-01-14 | Allg Rohrleitung A G | Relieved lens compensator for liquid and gas lines |
| FR1447332A (en) * | 1965-06-15 | 1966-07-29 | S E P I | Double bellows with large travel |
| US4239267A (en) * | 1979-09-10 | 1980-12-16 | The Dow Chemical Company | Internal-bellows, pressure-balanced, angled-flowpath expansion joint |
| CN2874187Y (en) * | 2005-12-09 | 2007-02-28 | 廊坊开发区首都航天波纹管厂 | Three dimension straight pipe pressure balance type corrugated expansion joint |
| CN101672406A (en) * | 2009-10-14 | 2010-03-17 | 锦州中德波纹管件制造有限公司 | Corrugation self-check double-protection compensator |
| CN102330867A (en) * | 2011-07-28 | 2012-01-25 | 大连益多管道有限公司 | Corrugated compensator with built-in sleeve |
| CN202532092U (en) * | 2012-02-29 | 2012-11-14 | 上海盛以德冶金装备科技有限公司 | Flexible telescopic joint |
| CN203258285U (en) * | 2013-03-30 | 2013-10-30 | 泰州华腾管道设备有限公司 | Compound abrasion resistant corrugated pipe compensator |
| CN203686456U (en) * | 2013-11-28 | 2014-07-02 | 洛阳双瑞特种装备有限公司 | Expansion joint for cyclone separator device |
-
2013
- 2013-11-28 CN CN201310615346.8A patent/CN103615623B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE901608C (en) * | 1949-05-19 | 1954-01-14 | Allg Rohrleitung A G | Relieved lens compensator for liquid and gas lines |
| FR1447332A (en) * | 1965-06-15 | 1966-07-29 | S E P I | Double bellows with large travel |
| US4239267A (en) * | 1979-09-10 | 1980-12-16 | The Dow Chemical Company | Internal-bellows, pressure-balanced, angled-flowpath expansion joint |
| CN2874187Y (en) * | 2005-12-09 | 2007-02-28 | 廊坊开发区首都航天波纹管厂 | Three dimension straight pipe pressure balance type corrugated expansion joint |
| CN101672406A (en) * | 2009-10-14 | 2010-03-17 | 锦州中德波纹管件制造有限公司 | Corrugation self-check double-protection compensator |
| CN102330867A (en) * | 2011-07-28 | 2012-01-25 | 大连益多管道有限公司 | Corrugated compensator with built-in sleeve |
| CN202532092U (en) * | 2012-02-29 | 2012-11-14 | 上海盛以德冶金装备科技有限公司 | Flexible telescopic joint |
| CN203258285U (en) * | 2013-03-30 | 2013-10-30 | 泰州华腾管道设备有限公司 | Compound abrasion resistant corrugated pipe compensator |
| CN203686456U (en) * | 2013-11-28 | 2014-07-02 | 洛阳双瑞特种装备有限公司 | Expansion joint for cyclone separator device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976480A (en) * | 2015-05-13 | 2015-10-14 | 天津城建大学 | Telescopic large-deformation soft steel corrugated connector suitable for underground pipe network |
| CN107606327A (en) * | 2017-10-31 | 2018-01-19 | 新中天环保股份有限公司 | solvent recovery pipeline |
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| Publication number | Publication date |
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| CN103615623B (en) | 2015-11-11 |
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Address after: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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