CN202691376U - Wear-resistant metal telescopic pipe for pulverized coal conveying pipe of multichannel burner - Google Patents
Wear-resistant metal telescopic pipe for pulverized coal conveying pipe of multichannel burner Download PDFInfo
- Publication number
- CN202691376U CN202691376U CN 201220236653 CN201220236653U CN202691376U CN 202691376 U CN202691376 U CN 202691376U CN 201220236653 CN201220236653 CN 201220236653 CN 201220236653 U CN201220236653 U CN 201220236653U CN 202691376 U CN202691376 U CN 202691376U
- Authority
- CN
- China
- Prior art keywords
- spherical
- sleeve
- inner sleeve
- compensator
- straight tube
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Joints Allowing Movement (AREA)
Abstract
The utility model relates to a wear-resistant metal telescopic pipe for a pulverized coal conveying pipe of a multichannel burner. The wear-resistant metal telescopic pipe comprises flanges at two ends, spherical compensators at two ends, an internal sleeve, an external sleeve, and a large-small end which are combined; the compensator at the inlet end and one end of the internal sleeve are welded together, the other end of the internal sleeve is sheathed in the external sleeve, the internal sleeve and the external sleeve are connected by a sealing cover plate and a compressed spring assembly; an internal sleeve check ring provided with a ball bearing is arranged at the tail end of the internal sleeve between the internal sleeve and external sleeve; one end of the external sleeve is welded with the large-small end, the large-small end and a front straight pipe of the spherical compensators at the outlet end are welded together; and the spherical compensators, the internal sleeve and the external sleeve are connected by adopting a sealing ring and a sealing pressure strip, thereby improving the compact performance of products. Wear-resistant ceramic layers are coated on the inner walls of the spherical compensators, the internal sleeve, the external sleeve and the large-small end, thereby improving the service lives of the products. The telescopic pipe is simple in structure and large in compensation quantity, is adaptive to left and right swing and free flexibility of the abutted internal and external sleeves through the two spherical compensators, and is convenient to assemble and disassemble and long in service life.
Description
Technical field
The utility model relates to the defeated pulverized coal channel antifriction metal (AFM) telescopic pipe of a kind of multicenter combustor, belongs to the pipe technology field.
Background technique
Burner is the capital equipment of firing system, and producing the large-scale rotary kilns such as cement, lime generally is to adopt multicenter combustor, says from pipeline to be provided with axial flow air channel, eddy flow air channel, coal air channel, air channel, center and fuel pipe etc.Owing to enter in the kiln by the hot blast pulverized coal conveying, can guarantee that by telescopic pipe burner is flexible, free to advance or retreat at three-dimensional, satisfy burner at the needs of normal operation.For multicenter combustor, especially in the large-scale rotary kiln burner combustion process, need send 10～15 tons of coal dusts as the pipeline of defeated coal dust is per hour defeated, because a large amount of pulverized coal particles washes away the furnace wall with high speed, very large to the pipe wall scouring force, such as the common rubber that uses of past, wired rubber, rubber plastic pipe, even use metallic hose, also since the tube wall material not resistance to erosion worn out leakage powder appears, telescopic pipe is the same very short working life, what have only can use 3,4 months, 7 of length, 8 months, used stainless metallic hose through improving rear inner lining, because pipe too heavily drops, or the pipe range selection is improper, form snakelike curvedly, longest-lived also can only about 1 year, so the defeated pulverized coal channel of multicenter combustor does not reach satisfied effect all the time with managing.
Summary of the invention
The purpose of this utility model is in order to solve the defeated pulverized coal channel of the multicenter combustor that exists in a prior art short difficult problem of antifriction metal (AFM) telescopic pipe life-span, and providing a kind of simple in structure, the multicenter combustor of long service life is failed pulverized coal channel antifriction metal (AFM) telescopic pipe.
In order to achieve the above object, the utility model adopts following technological scheme to realize: provide a kind of multicenter combustor to fail pulverized coal channel antifriction metal (AFM) telescopic pipe, comprise inlet duct, outer pipe and adpting flange, described telescopic pipe is by material approach axis being linked in sequence by entry end flange, entry end spherical compensator, inner sleeve, outer sleeve, CONCENTRIC REDUCER, outlet end spherical compensator and outlet end flange; Described entry end, outlet end spherical compensator are comprised of interior spherical shell, outer spherical housing and gland, interior spherical shell is that front straight tube and inner arc shell are cast the foundry goods of an integral body, the outer spherical housing is that rear straight tube and outer arc shell are also cast the foundry goods of an integral body, interior spherical shell is installed in the outer spherical housing, inside and outside spherical shell connects by gland, and inside and outside spherical shell also is equipped with seal ring and seal trim strip between the joint; The rear straight tube of described inner sleeve one end and entry end spherical compensator rear end is welded together, the other end of inner sleeve is enclosed within the outer sleeve, inner sleeve is connected with compression spring assembly by sealed cover with outer sleeve, the inner sleeve tail end of contact segment is provided with the inner sleeve back-up ring between inner sleeve and outer sleeve, the ball bearing that is equipped with in the inner sleeve back-up ring; Described outer sleeve has an end and CONCENTRIC REDUCER welded together, and the front straight tube of the CONCENTRIC REDUCER the other end and outlet end spherical compensator is welded together, and the front straight tube end of entry end spherical compensator, the rear straight tube end of outlet end spherical compensator all are connected with flange; All be laid with wear-resisting ceramic layer on the inwall of the inwall of described entry end, outlet end spherical compensator, inner sleeve, outer sleeve and CONCENTRIC REDUCER.
Described entry end spherical compensator is all identical with outlet end spherical compensator structure and size specification.
The front straight tube end of described entry end spherical compensator, the rear straight tube end of outlet end spherical compensator all are connected with flange, and the entry end flange is connected with front straight tube end by screw thread, and the outlet end flange is bolted on the rear straight tube end.
Between the interior spherical shell of described spherical compensator, the outer spherical housing, seal ring or the seal trim strip of oil immersion asbestos packing structure adopted in the sealing of the joint between inner sleeve and the outer sleeve.
Being laid with wear-resisting ceramic layer on the inwall of the inwall of described spherical compensator, inner sleeve, outer sleeve and CONCENTRIC REDUCER, is inwall spray wear-resistant ceramic layer or subsides wear resistant ceramic chip at described Cast Steel.
The defeated pulverized coal channel of multicenter combustor of the present utility model has the following advantages with the antifriction metal (AFM) telescopic pipe:
1, antifriction metal (AFM) telescopic pipe of the present utility model adopts the structure that respectively is provided with a spherical compensator and inner sleeve, outer sleeve combination at entry end, outlet end, make pipeline capable of expansion and contraction at three-dimensional when production run, especially two designed spherical compensators, its function is just flexible as the axle joint of robot, left-right rotation in can 30 degree scopes, can adapt to the different deformation angle of the pipe that is connected to pipe ends and wave direction, more convenient when also making simultaneously the plant maintenance of metal expansion pipe and burner or mounting or dismounting, also convenient again pipe arrangement.
2, the two ends of antifriction metal (AFM) telescopic pipe of the present utility model are respectively equipped with flange, and the outlet end flange is that bolt is fixedly connected with, and the entry end flange connects by screw thread rotation, and this structure greatly makes things convenient for the installation and removal of equipment.
3, the ball bearing of antifriction metal (AFM) telescopic pipe of the present utility model by installing makes inner sleeve and outer sleeve have the compensation of to axial displacement, and compensation rate is directly proportional with the length of telescopic pipe, and maximum length direction compensation rate can reach 500 mm.
4, the employing cast steel of antifriction metal (AFM) telescopic pipe of the present utility model is made part, and at Cast Steel inwall spray wear-resistant ceramic layer, or paste wear resistant ceramic chip at inwall, and so greatly improve the wear-resisting flushing resistance of compensator, solved compensator short problem in ubiquitous working life.
5, antifriction metal (AFM) flexible pipe structure of the present utility model is simple, safe and reliable, and mounting or dismounting are convenient, and long service life has good popularizing application prospect.
Description of drawings
What Fig. 1 was the defeated pulverized coal channel of the utility model multicenter combustor with the antifriction metal (AFM) telescopic pipe partly cuts open structural representation.
Fig. 2 is B place structure enlarged diagram among the utility model Fig. 1.
Fig. 3 is I place structure enlarged diagram among the utility model Fig. 1.
Fig. 4 is gland among the utility model Fig. 1, seal trim strip and seal ring mounting structure enlarged diagram.
Among the above-mentioned figure: 1-entry end flange; Straight tube before the 2-; 3-inner arc shell; The 4-seal ring; 5-outer arc shell; The 6-inner sleeve; The 7-outer sleeve; The 8-wear-resistant ceramic; The 9-ball bearing; 10-inner sleeve back-up ring; The 11-CONCENTRIC REDUCER; The 12-gland; The 13-seal trim strip; Straight tube behind the 14-; 15-outlet end flange; The 16-sealed cover; The 17-compression spring assembly.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1: a kind of multicenter combustor is failed pulverized coal channel antifriction metal (AFM) telescopic pipe, its structure is shown in Fig. 1,2,3,4, and telescopic pipe is by material approach axis being linked in sequence by entry end flange 1, entry end spherical compensator, inner sleeve 6, outer sleeve 7, CONCENTRIC REDUCER 11, outlet end spherical compensator and outlet end flange 15; Described entry end, outlet end spherical compensator are comprised of interior spherical shell, outer spherical housing and gland 12, interior spherical shell is that front straight tube 2 is cast the foundry goods of an integral body with inner arc shell 3, the outer spherical housing is that rear straight tube 14 is also cast the foundry goods of an integral body with outer arc shell 5, interior spherical shell is installed in the outer spherical housing, inside and outside spherical shell connects by gland 12, seal ring 4 and seal trim strip 13 also are installed, referring to Fig. 2 and Fig. 4 between the inside and outside spherical shell joint; The rear straight tube 14 of inner sleeve 6 one ends and entry end spherical compensator rear end is welded together, the other end of inner sleeve 6 is enclosed within 7 li of outer sleeves, inner sleeve 6 and outer sleeve 7 are connected with compression spring assembly by sealed cover 16 and are connected, referring to Fig. 3, the inner sleeve tail end of contact segment is provided with inner sleeve back-up ring 10 between inner sleeve 6 and outer sleeve 7, the ball bearing 9 that is equipped with in the inner sleeve back-up ring; Described outer sleeve 7 has an end and CONCENTRIC REDUCER 11 welded together, and the front straight tube of CONCENTRIC REDUCER 11 the other ends and outlet end spherical compensator is welded together, and front straight tube 2 ends of entry end spherical compensator, rear straight tube 14 ends of outlet end spherical compensator all are connected with flange; All be laid with wear-resisting ceramic layer 8 on the inwall of the inwall of described entry end, outlet end spherical compensator, inner sleeve 6, outer sleeve 7 and CONCENTRIC REDUCER 11.
Entry end flange 1 described in the utility model is connected with front straight tube 2 ends of entry end spherical compensator by screw thread, and outlet end flange 15 is bolted on rear straight tube 14 ends of outlet end spherical compensator.Between the interior spherical shell of spherical compensator, the outer spherical housing, the joint between inner sleeve 6 and the outer sleeve 7 adopts seal ring 4 or the seal trim strip 13 of oil immersion asbestos packing structure to seal.Spray wear-resistant ceramic layer 8 on the inwall of the inwall of described spherical compensator, inner sleeve 6, outer sleeve 7 and CONCENTRIC REDUCER 11.
Arrow among Fig. 1 represents the direction that the materials such as coal dust are advanced.The antifriction metal (AFM) telescopic pipe of present embodiment is installed in the pipeline of the defeated coal dust of four-way burner, and surpassed 2 years working life.
Embodiment 2: a kind of multicenter combustor is failed pulverized coal channel antifriction metal (AFM) telescopic pipe, posts one deck wear resistant ceramic chip at the inwall of Cast Steel, other structure such as embodiment 1, and reach more than 3 years the working life of target.
Metal expansion pipe of the present utility model is simple in structure, and compensation rate is large, and is safe and reliable, and mounting or dismounting are convenient, and long service life has good popularizing application prospect.
Claims (5)
1. a multicenter combustor is failed pulverized coal channel antifriction metal (AFM) telescopic pipe, comprise inlet duct, outer pipe and adpting flange, it is characterized in that: described telescopic pipe is by material approach axis being linked in sequence by entry end flange, entry end spherical compensator, inner sleeve, outer sleeve, CONCENTRIC REDUCER, outlet end spherical compensator and outlet end flange; Described entry end, outlet end spherical compensator are comprised of interior spherical shell, outer spherical housing and gland, interior spherical shell is that front straight tube and inner arc shell are cast the foundry goods of an integral body, the outer spherical housing is that rear straight tube and outer arc shell are also cast the foundry goods of an integral body, interior spherical shell is installed in the outer spherical housing, inside and outside spherical shell connects by gland, and inside and outside spherical shell also is equipped with seal ring and seal trim strip between the joint; The rear straight tube of described inner sleeve one end and entry end spherical compensator rear end is welded together, the other end of inner sleeve is enclosed within the outer sleeve, inner sleeve is connected with compression spring assembly by sealed cover with outer sleeve, the inner sleeve tail end of contact segment is provided with the inner sleeve back-up ring between inner sleeve and outer sleeve, the ball bearing that is equipped with in the inner sleeve back-up ring; Described outer sleeve has an end and CONCENTRIC REDUCER welded together, and the front straight tube of the CONCENTRIC REDUCER the other end and outlet end spherical compensator is welded together, and the front straight tube end of entry end spherical compensator, the rear straight tube end of outlet end spherical compensator all are connected with flange; All be laid with wear-resisting ceramic layer on the inwall of the inwall of described entry end, outlet end spherical compensator, inner sleeve, outer sleeve and CONCENTRIC REDUCER.
2. a kind of multicenter combustor according to claim 1 is failed pulverized coal channel antifriction metal (AFM) telescopic pipe, and it is characterized in that: described entry end spherical compensator is all identical with outlet end spherical compensator structure and size specification.
3. a kind of multicenter combustor according to claim 1 is failed pulverized coal channel antifriction metal (AFM) telescopic pipe, it is characterized in that: the front straight tube end of described entry end spherical compensator, the rear straight tube end of outlet end spherical compensator all are connected with flange, the entry end flange is connected with front straight tube end by screw thread, and the outlet end flange is bolted on the rear straight tube end.
4. a kind of multicenter combustor according to claim 1 is failed pulverized coal channel antifriction metal (AFM) telescopic pipe, it is characterized in that: between the interior spherical shell of described spherical compensator, the outer spherical housing, seal ring or the seal trim strip of oil immersion asbestos packing structure adopted in the sealing of the joint between inner sleeve and the outer sleeve.
5. a kind of multicenter combustor according to claim 1 is failed pulverized coal channel antifriction metal (AFM) telescopic pipe, it is characterized in that: being laid with wear-resisting ceramic layer on the inwall of the inwall of described spherical compensator, inner sleeve, outer sleeve and CONCENTRIC REDUCER, is inwall spray wear-resistant ceramic layer or subsides wear resistant ceramic chip at described Cast Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220236653 CN202691376U (en) | 2012-05-24 | 2012-05-24 | Wear-resistant metal telescopic pipe for pulverized coal conveying pipe of multichannel burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220236653 CN202691376U (en) | 2012-05-24 | 2012-05-24 | Wear-resistant metal telescopic pipe for pulverized coal conveying pipe of multichannel burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202691376U true CN202691376U (en) | 2013-01-23 |
Family
ID=47546998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220236653 Expired - Fee Related CN202691376U (en) | 2012-05-24 | 2012-05-24 | Wear-resistant metal telescopic pipe for pulverized coal conveying pipe of multichannel burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202691376U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570550A (en) * | 2016-02-23 | 2016-05-11 | 南京中特化工动力设备有限公司 | Universal joint compensation support |
| CN106958712A (en) * | 2017-04-12 | 2017-07-18 | 深圳市建安(集团)股份有限公司 | A kind of Impulse force of concrete pump pipe abatement device |
| CN114294495A (en) * | 2021-12-30 | 2022-04-08 | 扬州市银焰机械有限公司 | Pulverized coal conveying telescopic pipe for burner |
-
2012
- 2012-05-24 CN CN 201220236653 patent/CN202691376U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570550A (en) * | 2016-02-23 | 2016-05-11 | 南京中特化工动力设备有限公司 | Universal joint compensation support |
| CN106958712A (en) * | 2017-04-12 | 2017-07-18 | 深圳市建安(集团)股份有限公司 | A kind of Impulse force of concrete pump pipe abatement device |
| CN114294495A (en) * | 2021-12-30 | 2022-04-08 | 扬州市银焰机械有限公司 | Pulverized coal conveying telescopic pipe for burner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101922594A (en) | Solid material transporting elbow with detachable and changeable liner | |
| CN202691376U (en) | Wear-resistant metal telescopic pipe for pulverized coal conveying pipe of multichannel burner | |
| CN101761713B (en) | Wear-resisting metal composite hose | |
| CN203146869U (en) | Ceramic double-gate fly ash valve | |
| CN202469336U (en) | Wear-resistant elbow | |
| CN103062544B (en) | Uniform-inner-diameter direct current three-dimensional spherical compensator | |
| CN201651636U (en) | Abrasion resistant bent pipe | |
| CN102367903A (en) | High-temperature-resistant abrasion-proof positive-pressure expansion joint | |
| CN201152434Y (en) | Wholly-spherical type wear resistant elbow | |
| CN203281399U (en) | Wear-resistant spiral conveyor | |
| CN105715898A (en) | Anti-abrasive expansion joint provided with flexible dustproof structure | |
| CN108622663A (en) | A kind of spherical elbow wear-resisting suitable for air-transport system | |
| CN205244712U (en) | Wear -resisting elbow of cement conveyer pipe | |
| CN201875338U (en) | Pipeline structure | |
| CN206814001U (en) | Powder-granule material Geldart-D particle elbow | |
| CN104154376A (en) | Pneumatic conveying pipeline air supplement device | |
| CN201621404U (en) | Abrasion resistant type metal corrugated soft pipe | |
| CN202432151U (en) | Connection flange device for pneumatic conveying pipelines | |
| CN203082379U (en) | Thermometal wear-resisting composite tube | |
| CN2585008Y (en) | Wear-resisting bend | |
| CN202901578U (en) | Telescopic pipe used for conveying pulverized coal | |
| CN109405551A (en) | A kind of exhausting system of sintering machine and its compensation device | |
| CN201354913Y (en) | Novel wear resisting elbow | |
| CN201628045U (en) | Wear-resisting corrugated pipe compensator | |
| CN202442058U (en) | Wear resistant telescoping device |
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 |
Granted publication date: 20130123 Termination date: 20150524 |
|
| EXPY | Termination of patent right or utility model |