CN205065154U - A elbow for dredging engineering feed line - Google Patents
A elbow for dredging engineering feed line Download PDFInfo
- Publication number
- CN205065154U CN205065154U CN201520831160.0U CN201520831160U CN205065154U CN 205065154 U CN205065154 U CN 205065154U CN 201520831160 U CN201520831160 U CN 201520831160U CN 205065154 U CN205065154 U CN 205065154U
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- elbow
- pipe
- inner layer
- outer 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an elbow for dredging engineering feed line belongs to dredging engineering and equips technical field. The utility model provides a: the elbow, including elbow body and ring flange, it is the cast -steel pipe that adopts the wear -resisting high chromium cast iron material of tombarthite to form through the mould casting with the compound complex body as an organic whole of outer -layer steel pipe, its inlayer steel pipe that its elbow body be the inlayer steel pipe, outer -layer steel pipe be by at least 2 blocks carbon steel plates after batching, the die mould is processed into with the inlayer steel pipe identical appearance structure the fastening welding in the outside of inlayer steel pipe, a packing colloid layer in the clearance of inlayer steel pipe and outer -layer steel pipe complex. Compared with the prior art, the utility model, it is reliable to have technical scheme, both satisfies the crooked requirement that is used for adjusting the discharge pipeline orientation, can reach the outstanding substantive characteristics that are close to mutually with the wear resistance of the compound mud pipe of metal and positive progress again.
Description
Technical field
The utility model relates to the correlative equipment technical field used in dredging works, particularly relates to a kind of technical field of the elbow for conveying pipeline of dredging work.
Background technique
River course, navigation channel, basin is dredged deeply, shoal, harbour, the mechanical dredging engineerings such as harbour foundation trench all need a large amount of transfer line to realize conveying, and in whole transfer line the indispensable elbow for adjusting transfer line direction, so far major part uses Self-float mud discharging rubber pipe or Ordinary Steel elbow always, because Self-float mud discharging rubber pipe is being carried as rock, coral reef, ores etc. have during the solid material of sharp-edged and can be worn through very soon, lose use value, and whole dredging works system downtime will be caused, carry out repairing or whole transfer line is scrapped, expend valuable engineering time and higher pipeline maintainance expense.For solving this technical problem, technological deficiency existing for further improvement Self-float mud discharging rubber pipe, disclosed in State Intellectual Property Office on 06 29th, 2011, the patent No. is: the technological scheme of ZL200920235203.3 and December in 2009 notice of authorization on the 02nd the patent No. be: the technological scheme of ZL200920036395.5 is all solve the technological deficiency existed in background technique, the technological scheme adding the good organic adhesion agent of wear-resisting property and wear-resisting steel loop at the innermost layer of sebific duct is taken in raising wear-resisting property, for the working life of improving Self-float mud discharging rubber pipe provides new technological scheme.But the product own defect existing due to Self-float mud discharging rubber pipe itself and cause and still there is following deficiency: although first Self-float mud discharging rubber pipe has certain bending properties, but be used as spoil disposal bend pipe play adjustment spoil disposal transfer line direction function still there is obvious inadequate natural endowment, particularly when supporting the use with binding type supporting metal composite sludge drainage pipe, it shows more outstanding; It two is Self-float mud discharging rubber pipes by increasing the technological scheme of organic adhesion agent and wear-resisting steel loop at the innermost layer of sebific duct, reach the wear-resisting property improving rubber pipe self, but Self-float mud discharging rubber pipe or Ordinary Steel elbow not only also have quite poor distance in product price, Product transport cost etc. compared with the metal composite sludge drainage pipe that the antiwear high-chromium cast iron material good with wear-resisting property is made, the more important thing is that its working life can only reach 1/3rd of metal composite sludge drainage pipe, there is serious mass defect on service life; Therefore, how on the basis of existing technology new a kind of elbow for conveying pipeline of dredging work of Design and manufacture, it is made both to have met the purposes being used for adjusting transfer line direction, can reach again simultaneously and be close with the wear-resisting property of metal composite sludge drainage pipe, the conformability of the service property (quality) of comprehensive raising metal sludge drainage pipe, working life and Environmental Conditions, reduce the cost of production of dredging works, improve Business Economic Benefit, this is for being still a problem urgently to be resolved hurrily those skilled in the art.
Summary of the invention
Technical problem to be solved in the utility model overcomes the deficiencies in the prior art, and provide a kind of design concept novelty, technological scheme reliable, both the bending requirement being used for adjusting mud delivery pipeline direction had been met, can reach again and be close with the wear-resisting property of metal composite sludge drainage pipe, the conformability of the service property (quality) of comprehensive raising metal sludge drainage pipe, working life and Environmental Conditions, reduce the cost of production of dredging works, improve the elbow for conveying pipeline of dredging work of Business Economic Benefit.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: a kind of elbow for conveying pipeline of dredging work, comprise elbow body and flange plate, its special way is described elbow body is the compound body that inner layer steel pipe and outer layer pipe are complex as a whole, its inner layer steel pipe adopts rare earth antiwear high-chromium cast iron material through the cast-steel pipe of die casting, outer layer pipe is through batching by least 2 blocks of Carbon Steel Plates, the fastening outside being welded on inner layer steel pipe after the form structure that Profile procoess becomes and inner layer steel pipe matches, colloid layer is filled in the gap of inner layer steel pipe and outer layer pipe compound.
For solving the problems of the technologies described above further, the preferred version of technique scheme is:
The stressed place of bending of inner layer steel pipe described above is provided with the rare earth antiwear high-chromium cast iron reinforced layer that one deck combines together with it, the curved surface structure that reinforced layer is formed for hyperboloid connects.
Flange plate described above is the jointing being welded on body two ends, and the internal diameter of this flange plate and the external diameter of outer layer pipe match, and what longitudinal connecting part of its flange plate and outer layer pipe was uniform is provided with more than 4 stiffening ribs.
The interior warp of elbow body described above is 219-1820 ㎜, and its inner layer steel pipe wall thickness h1 is 5-10 ㎜, and the wall thickness h2 of outer layer pipe is 8-12 ㎜.
The thickness h 3 of curved surface center described above is 5-10 ㎜.
The utility model compared with prior art has following comparatively outstanding substantive distinguishing features and significant progress:
The first due to the utility model be adopt the antiwear high-chromium cast iron material that is added with rare earth elements through the cast-steel pipe of die casting as elbow inner layer steel pipe, one is coated with low carbon steel plate through batching in the outside of inner layer steel pipe, die mould, the design proposal of the elbow body that the outer layer pipe that welding procedure processes is formed, prove through production and processing and site test, this technological scheme not only meets adjustment transfer line 90-degree bent, 135 °, the technical requirements of 180 °, and elbow described in the utility model achieves the target also more superior than the wear-resisting property of metal composite sludge drainage pipe, reach the service property (quality) comprehensively improving metal sludge drainage pipe, the conformability of working life and Environmental Conditions, thus make elbow described in the utility model compared with prior art have design concept novelty, technological scheme is reliable, fully can meet the bending requirement in mud delivery pipeline direction, reach with metal composite sludge drainage pipe support the use the outstanding substantive distinguishing features creating precondition.
It two is that elbow described in the utility model is taked on the basis that inner layer steel pipe uses rare earth antiwear high-chromium cast iron material, be provided with again one deck to combine together with it and the antiwear high-chromium cast iron reinforced layer containing rare earth elements at the stressed place of its bending, the technological scheme of the curved surface structure that reinforced layer is formed for hyperboloid connects, for strengthening the wear-resisting property at the stressed place of elbow bending described in the utility model and resistance to collision performance further, improve and provide technical measures more reliably working life, thus the technological deficiency overcome existing for this weak link of the existing stressed place of elbow bending, elbow described in the utility model is made to have high wear-resisting property, reach close with the wear-resisting property of metal composite sludge drainage pipe and matching used object with it, for improving the service property (quality) of transfer line comprehensively, working life, reduce the cost of production of dredging works, improving Business Economic Benefit provides new, the technological scheme of technically reliable, this compared with prior art, really beyond thought technique effect is created, there is outstanding substantive distinguishing features and significant progress.
Three to be outer layer pipes described in the utility model be with low carbon steel plate through batching for it, itself and inner layer steel pipe are fastened as a whole by the mode of die mould and fastening welding, there is the technological scheme of colloid layer at the gap-fill of inner layer steel pipe and outer layer pipe compound simultaneously, not only make outer layer pipe under the design function condition playing due mounting flange and protection inner layer steel pipe, make not produce gap between two-layer steel pipe by the mode of fastening welding, avoid the generation of two skin phenomenons, simultaneously for improving the wear-resisting property of inner layer steel pipe and resistance to collision performance, improve the condition and chance that provide a release and buffering working life, thus make elbow described in the utility model be the service property (quality) comprehensively improving transfer line, working life, reduce the cost of production of dredging works, improve Business Economic Benefit provide one new, reliable technological scheme, this is compared with prior art had outstanding substantive distinguishing features and significant progress.
Accompanying drawing explanation
Included accompanying drawings provides further understanding of the present utility model, and it is incorporated in this specification the part forming this specification, and described accompanying drawing shows embodiment of the present utility model and is used from specification one explains principle of the present utility model.Reference character identical in the accompanying drawings represents identical parts.
In the accompanying drawings:
Fig. 1 is a kind of elbow structure schematic diagram for conveying pipeline of dredging work of the utility model embodiment 1,4.
Fig. 2 is a kind of elbow structure schematic diagram for conveying pipeline of dredging work of the utility model embodiment 2,5.
Fig. 3 is a kind of elbow structure schematic diagram for conveying pipeline of dredging work of the utility model embodiment 3.
Fig. 4 is the A-A sectional view of Fig. 1, Fig. 2, Fig. 3.
Reference character: 1-flange plate 2-outer layer pipe 3-inner layer steel pipe 4-reinforced layer 5-flange plate 6-stiffening rib 7-colloid layer.
Embodiment
Describe the specific structural details of a kind of elbow for conveying pipeline of dredging work of the utility model in detail below in conjunction with accompanying drawing and install and use process, the restriction to the utility model claim of going up in all senses must not be interpreted as.
Embodiment 1:
A kind of elbow for conveying pipeline of dredging work of the utility model embodiment 1 is (see Fig. 1, Fig. 4), comprise elbow body 2, 3 and flange plate 1, 5, described elbow body is the compound body that inner layer steel pipe 2 and outer layer pipe 3 are complex as a whole, its inner layer steel pipe 2 adopts rare earth antiwear high-chromium cast iron material through the cast-steel pipe of die casting, outer layer pipe 3 is through batching by 2 blocks of Carbon Steel Plates, the fastening outside being welded on inner layer steel pipe 2 after the form structure that Profile procoess becomes and inner layer steel pipe 2 matches, colloid layer 7 is filled in inner layer steel pipe 2 and the gap of outer layer pipe 3 compound.
The stressed place of bending of inner layer steel pipe 2 described above is provided with the rare earth antiwear high-chromium cast iron reinforced layer 4 that one deck combines together with it, and the curved surface structure that reinforced layer 4 is formed for hyperboloid connects, the thickness h 3 of the curved surface center of described reinforced layer 4 is 5 ㎜.
Flange plate 1,5 described above is for being welded on the jointing at body two ends, and the internal diameter of this flange plate 1,5 and the external diameter of outer layer pipe 3 match, and what longitudinal connecting part of its flange plate 1,5 and outer layer pipe 3 was uniform is provided with 4 stiffening ribs 6.
The wall thickness h1 of its inner layer steel pipe 2 is 5 ㎜ through being 219 ㎜ for elbow body described above interior, and the wall thickness h2 of outer layer pipe 3 is 8 ㎜.
More than form a static structure of a kind of elbow for conveying pipeline of dredging work of the utility model embodiment 1.
The elbow for conveying pipeline of dredging work described in the utility model embodiment 1 should be applicable to the slightly good land dredging works of the region operating environments such as inland rivers, lake, harbour for adjusting the purposes of the elbow in transfer line direction.Also may be used for the purposes of the elbow of the concrete delivery pipe on concrete delivery truck.
Embodiment 2:
A kind of elbow for conveying pipeline of dredging work of the utility model embodiment 2 is (see Fig. 2, Fig. 4), comprise elbow body 2, 3 and flange plate 1, 5, described elbow body is the compound body that inner layer steel pipe 2 and outer layer pipe 3 are complex as a whole, its inner layer steel pipe 2 adopts rare earth antiwear high-chromium cast iron material through the cast-steel pipe of die casting, outer layer pipe 3 is through batching by 4 blocks of Carbon Steel Plates, the fastening outside being welded on inner layer steel pipe 2 after the form structure that Profile procoess becomes and inner layer steel pipe 2 matches, colloid layer 7 is filled in inner layer steel pipe 2 and the gap of outer layer pipe 3 compound.
The stressed place of bending of inner layer steel pipe 2 described above is provided with the rare earth antiwear high-chromium cast iron reinforced layer 4 that one deck combines together with it, and the curved surface structure that reinforced layer 4 is formed for hyperboloid connects, the thickness h 3 of the curved surface center of described reinforced layer 4 is 9 ㎜.
Flange plate 1,5 described above is for being welded on the jointing at body two ends, and the internal diameter of this flange plate 1,5 and the external diameter of outer layer pipe 3 match, and what longitudinal connecting part of its flange plate 1,5 and outer layer pipe 3 was uniform is provided with 4 stiffening ribs 6.
The wall thickness h1 of its inner layer steel pipe 2 is 9 ㎜ through being 1220 ㎜ for elbow body described above interior, and the wall thickness h2 of outer layer pipe 3 is 10 ㎜.
More than form a static structure of a kind of elbow for conveying pipeline of dredging work of the utility model embodiment 2.
The elbow for conveying pipeline of dredging work of the utility model embodiment 2 be with operating environment and condition comparatively severe, require transfer line to have anti-storm, crash-resistant ability is strong, the marine dredging works of carrying elbow many in uninterrupted working time length, transfer line is for adjusting the purposes of the elbow in transfer line direction.
Embodiment 3:
A kind of elbow for conveying pipeline of dredging work of the utility model embodiment 3 is (see Fig. 3, Fig. 4), comprise elbow body 2, 3 and flange plate 1, 5, described elbow body is the compound body that inner layer steel pipe 2 and outer layer pipe 3 are complex as a whole, its inner layer steel pipe 2 adopts rare earth antiwear high-chromium cast iron material through the cast-steel pipe of die casting, outer layer pipe 3 is through batching by 6 blocks of Carbon Steel Plates, the fastening outside being welded on inner layer steel pipe 2 after the form structure that Profile procoess becomes and inner layer steel pipe 2 matches, colloid layer 7 is filled in inner layer steel pipe 2 and the gap of outer layer pipe 3 compound.
The stressed place of bending of inner layer steel pipe 2 described above is provided with the rare earth antiwear high-chromium cast iron reinforced layer 4 that one deck combines together with it, and the curved surface structure that reinforced layer 4 is formed for hyperboloid connects, the thickness h 3 of the curved surface center of described reinforced layer 4 is 10 ㎜.
Flange plate 1,5 described above is for being welded on the jointing at body two ends, and the internal diameter of this flange plate 1,5 and the external diameter of outer layer pipe 3 match, and longitudinal connecting part of its flange plate 1,5 and outer layer pipe 3 is each uniform is provided with 16 stiffening ribs 6.
The wall thickness h1 of its inner layer steel pipe 2 is 10 ㎜ through being 1820 ㎜ for elbow body described above interior, and the wall thickness h2 of outer layer pipe 3 is 12 ㎜.
More than form a static structure of a kind of elbow for conveying pipeline of dredging work of the utility model embodiment 3.
A kind of elbow for conveying pipeline of dredging work of the utility model embodiment 3 be with operating environment and condition more severe, require that transfer line has anti-storm, crash-resistant ability is strong, particularly can tolerate ore, coral reef collision, the marine dredging works that in uninterrupted working time length, transfer line, elbow is many is for adjusting the application of the spoil disposal bend pipe in mud delivery pipeline direction.
Embodiment 4:
A kind of elbow for conveying pipeline of dredging work of the utility model embodiment 4 is (see Fig. 1, Fig. 4), comprise elbow body 2, 3 and flange plate 1, 5, described elbow body is the compound body that inner layer steel pipe 2 and outer layer pipe 3 are complex as a whole, the tube wall of its inner layer steel pipe 2 adopts rare earth antiwear high-chromium cast iron material through the cast-steel pipe of die casting, outer layer pipe 3 is through batching by least 2 blocks of Carbon Steel Plates, the fastening outside being welded on inner layer steel pipe 2 after the form structure that Profile procoess becomes and inner layer steel pipe 2 matches, colloid layer 7 is filled in inner layer steel pipe 2 and the gap of outer layer pipe 3 compound.
The stressed place of bending of inner layer steel pipe 2 described above is provided with the rare earth antiwear high-chromium cast iron reinforced layer 4 that one deck combines together with it, and the curved surface structure that reinforced layer 4 is formed for hyperboloid connects, the thickness h 3 of the curved surface center of described reinforced layer 4 is 6 ㎜.
Flange plate 1,5 described above is for being welded on the jointing at body two ends, and the internal diameter of this flange plate 1,5 and the external diameter of outer layer pipe 3 match, and longitudinal connecting part of its flange plate 1,5 and outer layer pipe 3 is each uniform is provided with 6 stiffening ribs 6.
The wall thickness h1 of its inner layer steel pipe 2 is 6 ㎜ through being 550 ㎜ for elbow body described above interior, and the wall thickness h2 of outer layer pipe 3 is 9 ㎜.
More than form a static structure of a kind of elbow for conveying pipeline of dredging work of the embodiment of the present invention 4.
A kind of elbow for conveying pipeline of dredging work described in the present embodiment 4 should be applicable to the slightly good land dredging works of the region operating environments such as inland rivers, lake, harbour for adjusting the purposes of the elbow in transfer line direction.
Embodiment 5:
A kind of elbow for conveying pipeline of dredging work of the utility model embodiment 5 is (see Fig. 2, Fig. 4), comprise elbow body 2, 3 and flange plate 1, 5, described elbow body is the compound body that inner layer steel pipe 2 and outer layer pipe 3 are complex as a whole, its inner layer steel pipe 2 adopts rare earth antiwear high-chromium cast iron material through the cast-steel pipe of die casting, outer layer pipe 3 is through batching by 4 blocks of Carbon Steel Plates, the fastening outside being welded on inner layer steel pipe 2 after the form structure that Profile procoess becomes and inner layer steel pipe 2 matches, colloid layer 7 is filled in inner layer steel pipe 2 and the gap of outer layer pipe 3 compound.
The stressed place of bending of inner layer steel pipe 2 described above is provided with the rare earth antiwear high-chromium cast iron reinforced layer 4 that one deck combines together with it, and the curved surface structure that reinforced layer 4 is formed for hyperboloid connects, the thickness h 3 of the curved surface center of described reinforced layer 4 is 8 ㎜.
Flange plate 1,5 described above is for being welded on the jointing at body two ends, and the internal diameter of this flange plate 1,5 and the external diameter of outer layer pipe 3 match, and longitudinal connecting part of its flange plate 1,5 and outer layer pipe 3 is each uniform is provided with 8 stiffening ribs 6.
The wall thickness h1 of its inner layer steel pipe 2 is 8 ㎜ through being 850 ㎜ for elbow body described above interior, and the wall thickness h2 of outer layer pipe 3 is 10 ㎜.
More than form a static structure of a kind of elbow for conveying pipeline of dredging work of the utility model embodiment 5.
A kind of elbow for conveying pipeline of dredging work described in the present embodiment 5 be with operating environment and condition comparatively severe, require that transfer line has anti-storm, crash-resistant ability is strong, the marine dredging works that in uninterrupted working time length, transfer line, spoil disposal elbow is many, for adjusting the purposes of the elbow in transfer line direction, also may be used for the purposes of elbow dredger adjusting transfer line direction.
When a kind of elbow for conveying pipeline of dredging work described in the utility model is installed and used in input, after described elbow model specification as required need being selected, transport to production scene and assemble according to the structural requirement of product, particularly require to carry out multiple assembling according to the adjustment number of degrees of elbow when the tortuosity of adjustment transfer line, link into an integrated entity with bolt and form a transfer line.
Claims (5)
1. the elbow for conveying pipeline of dredging work, comprise elbow body and flange plate, it is characterized in that described elbow body is the compound body that inner layer steel pipe and outer layer pipe are complex as a whole, its inner layer steel pipe adopts rare earth antiwear high-chromium cast iron material through the cast-steel pipe of die casting, outer layer pipe is by least 2 blocks of Carbon Steel Plates fastening outside being welded on inner layer steel pipe after the form structure that batching, Profile procoess one-tenth and inner layer steel pipe match, and fills colloid layer in the gap of inner layer steel pipe and outer layer pipe compound.
2. the elbow for conveying pipeline of dredging work according to claim 1, it is characterized in that the rare earth antiwear high-chromium cast iron reinforced layer that the stressed place of the bending of described inner layer steel pipe is provided with one deck and combines together with it, the curved surface structure that reinforced layer is formed for hyperboloid connects.
3. the elbow for conveying pipeline of dredging work according to claim 1 and 2, it is characterized in that described flange plate is the jointing being welded on body two ends, the internal diameter of this flange plate and the external diameter of outer layer pipe match, and what longitudinal connecting part of its flange plate and outer layer pipe was uniform is provided with more than 4 stiffening ribs.
4. the elbow for conveying pipeline of dredging work according to claim 1 and 2, is characterized in that the interior warp of described elbow body is 219-1820 ㎜, and its inner layer steel pipe wall thickness h1 is 5-10 ㎜, and the wall thickness h2 of outer layer pipe is 8-12 ㎜.
5. the elbow for conveying pipeline of dredging work according to claim 2, is characterized in that the thickness h 3 of described curved surface center is 5-10 ㎜.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831160.0U CN205065154U (en) | 2015-10-26 | 2015-10-26 | A elbow for dredging engineering feed line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831160.0U CN205065154U (en) | 2015-10-26 | 2015-10-26 | A elbow for dredging engineering feed line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205065154U true CN205065154U (en) | 2016-03-02 |
Family
ID=55391710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520831160.0U Expired - Fee Related CN205065154U (en) | 2015-10-26 | 2015-10-26 | A elbow for dredging engineering feed line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205065154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107825070A (en) * | 2017-10-20 | 2018-03-23 | 中交广州航道局有限公司 | Dredging pipe and its processing method |
-
2015
- 2015-10-26 CN CN201520831160.0U patent/CN205065154U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107825070A (en) * | 2017-10-20 | 2018-03-23 | 中交广州航道局有限公司 | Dredging pipe and its processing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100479949C (en) | Method for preparing SiC/base steel surface composite material | |
| CN105221883A (en) | A kind of bend design method for conveying pipeline of dredging work and elbow thereof | |
| CN105135088B (en) | A kind of method for designing and its discharge pipeline of armored sludge discharge pipe | |
| CN106885061A (en) | A kind of heterogeneous segmented high abrasion bilayer straight tube for concrete conveyance | |
| CN205065154U (en) | A elbow for dredging engineering feed line | |
| CN104633320B (en) | The method for designing of a kind of armored sludge discharge pipe and discharge pipeline thereof | |
| CN204592615U (en) | A kind of armored sludge discharge pipe | |
| CN109291238B (en) | Manufacturing method of pre-stress double-sleeve wear-resistant pipe | |
| CN109578738B (en) | Piping-preventing directional drilling pipeline isolation pipe plugging device | |
| CN105135089A (en) | Mud pipe and design method for self-floating armored mud pipe | |
| CN204986073U (en) | Armor mud pipe | |
| CN105736444B (en) | A kind of large-scale dredge pump pump case using wear resistant cast iron inserts and it is welded and fixed method | |
| CN206018106U (en) | A kind of abrasion-proof bent tube for being conveniently replaceable wearing plate | |
| CN105951915B (en) | A kind of design method and its floating body of Self-floating type mud-discharging pipe floating body | |
| Akimoto et al. | Immersed tunnels in Japan: Recent technological trends | |
| CN207989986U (en) | A kind of complex abrasion-proof spoil disposal bend pipe | |
| CN218118936U (en) | Rubber armored mud pipe | |
| CN202361000U (en) | Sealed waterproof submarine thermal-insulation pipe | |
| CN101446373A (en) | Production method of composite tube lined with ultra-high molecular weight polyethylene tube | |
| CN212203439U (en) | Floating type built-in armor rubber pipe | |
| CN205975767U (en) | Cutter suction dredger inhales discharge pipeline return bend assembly | |
| CN205298877U (en) | Armor mud pipe | |
| CN110005446B (en) | Construction method for second lining of precast concrete pipe of small-diameter tunnel | |
| CN205639042U (en) | Adopt large -scale dredge pump pump case of wear resistant cast iron inserts | |
| CN203768970U (en) | Sludge discharging pipe used for dredging engineering |
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: 20160302 Termination date: 20181026 |