CN202708364U - Nodular cast iron pipe provided with concrete in wrapping mode - Google Patents
Nodular cast iron pipe provided with concrete in wrapping mode Download PDFInfo
- Publication number
- CN202708364U CN202708364U CN 201220395265 CN201220395265U CN202708364U CN 202708364 U CN202708364 U CN 202708364U CN 201220395265 CN201220395265 CN 201220395265 CN 201220395265 U CN201220395265 U CN 201220395265U CN 202708364 U CN202708364 U CN 202708364U
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- iron pipe
- cast iron
- spigot
- flange
- nodular cast
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Abstract
The utility model discloses a nodular cast iron pipe provided with concrete in wrapping mode and relates to the technical field of spigot joint type nodular cast iron pipes. The nodular cast iron pipe comprises a spigot joint type nodular cast iron pipe body. Two ends of the spigot joint type nodular cast iron pipe body are respectively provided with a bell mouth and a faucet. The outer wall of the spigot joint type nodular cast iron pipe body is provided, in wrapping mode, with a concrete layer which enables the whole spigot joint type nodular cast iron pipe body to be the same in diameter. A cylindrical reinforcing mesh is interlaid in the concrete layer. The outer end of the faucet is provided with a connecting flange group. A ring-shaped boss is arranged on the outer side of the end portion of the bell mouth and is the same as the concrete layer in outer diameter. The nodular cast iron pipe has the advantages of ensuring the two ends are the same in diameter and facilitating jacking construction, shortening a construction period, and reducing project cost due to the fact that the outer wall of the spigot joint type nodular cast iron pipe body is provided with the concrete layer, prolonging service life due to the fact that the concrete of the outer layer can protect the spigot joint type nodular cast iron pipe body, and facilitating construction due to the fact that the faucet end of the spigot joint type nodular cast iron pipe provided with the concrete layer in wrapping mode is provided with a flange and a rib plate and is used as a force bearing end in the jacking process.
Description
Technical field
The utility model relates to spigot and socket type ductile iron pipe technical field, particularly a kind of external wrapping concrete ductile iron pipe that is applied to jacking construction.
Background technique
The spigot and socket type ductile iron pipe has the advantages such as mechanical property is good, interface reliability height, corrosion resistance and good, long service life, be widely used in the industrial departments such as urban construction water delivery and gas transmission, but the laying of traditional spigot and socket type ductile iron pipe need to be excavated groove.Extensive development along with urban construction, people propose higher requirement to living environment, the laying of some pipeline needs not allow at ground excavation groove through the densely populated area, perhaps owing to be subjected to the restriction of execution conditions, such as crossing highway, railway, the river, above ground structure etc., can't be at ground ditching and laying pipeline, prolong construction period or increase construction cost, in order conveniently to construct, digging-free pipe jacking construction method has become urban duct construction Main Means at present, but because existing spigot and socket type ductile iron pipe is bayonet joint, the cast tube two ends are respectively bellmouth and insertion end, and its two ends diameter is inconsistent, and larger axial force can not be directly born in bayonet joint, can not directly carry out jacking construction, restriction spigot and socket type ductile iron pipe Applicable scope.
The model utility content
The technical problems to be solved in the utility model provides the external wrapping concrete ductile iron pipe, by setting up concrete layer in common spigot and socket type ductile iron pipe outside, keeps the entire body diameter identical, is convenient to carry out jacking construction; By at the socket end suitable flange and gusset being installed, bear thrust load, axial carrying problem when solving pushing tow.Reach the convenient incremental launching construction that is used for, effectively shorten construction period, save the purpose of construction cost.
Design concept of the present utility model is to realize like this, existing spigot and socket type ductile iron pipe is extensively quoted and the fields such as urban construction water delivery and gas transmission with advantages such as its corrosion-resistant and mechanical property are good, but pipeline need to excavate groove and buries underground in work progress, along with urban development and environmental requirement, the excavation groove is buried underground and is not allowed, run into to pass bridge and building the time when pipeline construction simultaneously, do not allow to excavate groove yet, for convenient construction, be widely used at present a kind of jacking construction method, but spigot and socket type ductile iron pipe two ends diameter is inconsistent, be not easy to jacking, the utility model is by coating concrete at spigot and socket type spheroidal graphite cast iron tube body outer wall, its outer diameter adjustment is consistent, be convenient to carry out jacking construction, simultaneously flange and gusset be set as load-carrying construction in insertion end, solve bayonet joint and can not directly bear larger axial force problem.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: the external wrapping concrete ductile iron pipe, comprise spigot and socket type spheroidal graphite cast iron tube body, and its two ends are bellmouth and socket; Its key improvements is; Be coated with the concrete layer that makes its elongated diameter identical on the described spigot and socket type spheroidal graphite cast iron tube body outer wall, accompany cylinder-shaped steel muscle net in the described concrete layer, described socket outer end is provided with the adpting flange group, the outside, described bellmouth end is provided with annular boss, and the annular boss external diameter is identical with the external diameter of described concrete layer.
Described flange group comprises the first flange and at least four the first gussets being located on the first flange and the spigot and socket type spheroidal graphite cast iron tube body outer wall; Described the first gusset is evenly arranged radially around spigot and socket type ductile iron pipe body axis.
Also be provided with collar stop on the described spigot and socket type spheroidal graphite cast iron tube body outer wall, collar stop contacts with described the first gusset end.
Described flange group comprises from the socket outer end along axis three-flange and second flange of inwardly order setting, is evenly arranged radially at least two the second gussets around spigot and socket type ductile iron pipe axis between the second flange and the three-flange.
Described three-flange is provided with at least four through holes that are evenly arranged radially around its axis, and described spigot and socket type ductile iron pipe bellmouth end is provided with the tapped hole that quantity is identical with described number of openings and the position is identical.
Described spigot and socket type spheroidal graphite cast iron tube body middle part is provided with grout hole.
Described spigot and socket type ductile iron pipe inner wall is provided with inside liner, and described inside liner can be the slush inside liner.
The beneficial effects of the utility model are as follows:
(1) coats concrete layer at spigot and socket type spheroidal graphite cast iron tube body outer wall, guarantee that the two ends diameter is identical, be convenient to jacking construction; shorten construction period; reduce project cost, outer field concrete can be protected spigot and socket type spheroidal graphite cast iron tube body simultaneously, increases the service life.
(2) at spigot and socket type spheroidal graphite cast iron tube faucet one end that is coated with concrete layer flange group and gusset are set, in jack-in process as load end, convenient construction.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model embodiment 1 structural representation;
Fig. 2 is the utility model embodiment 2 structural representations;
Fig. 3 is the utility model embodiment 3 structural representations;
In the accompanying drawings: 1, bellmouth; 2, annular boss; 3, the first flange; 4, concrete layer; 5, grout hole; 6, reinforcing mesh; 7, socket; 8, the first gusset; 9, the second flange; 10, three-flange; 11, the second gusset; 12, seal ring; 13, inside liner; 14, nut; 15, stud bolt; 16, tapped hole; 17, collar stop.
Embodiment
Embodiment 1: the utility model discloses the external wrapping concrete ductile iron pipe, comprise spigot and socket type spheroidal graphite cast iron tube body, its two ends are bellmouth 1 and socket 7; Its key improvements is; Be coated with on the described spigot and socket type spheroidal graphite cast iron tube body outer wall and make the identical concrete layer of its elongated diameter 4, accompany cylinder-shaped steel muscle net 6 in the described concrete layer 4, described socket 7 outer ends are provided with the adpting flange group, the outside, described bellmouth 1 end is provided with annular boss 2, and annular boss 2 external diameters are identical with the external diameter of described concrete layer 4.In Specific construction working process; spigot and socket type spheroidal graphite cast iron tube body and cylindric reinforcing bar net are put into pre-processed mould; then concreting in mould; utilize concrete layer that its external diameter adjustment is consistent; be convenient to carry out jacking construction; the effect of annular boss is to guarantee end concrete minimum thickness, guarantees the concrete bond strength.
Described flange group comprises the first flange 3 and at least four the first gussets 8 being located on the first flange 3 and the spigot and socket type spheroidal graphite cast iron tube body outer wall; Described the first gusset 8 is evenly arranged radially around spigot and socket type ductile iron pipe body axis.
Also be provided with collar stop 17 on the described spigot and socket type spheroidal graphite cast iron tube body outer wall, collar stop 17 contacts with described the first gusset 8 ends.At spigot and socket type ductile iron pipe socket end outer wall the first flange and the first gusset are set, the first gusset is symmetrical arranged four at least, concrete quantity can be adjusted according to spigot and socket type spheroidal graphite cast iron tube body specification, the first gusset and flange and collar stop 17 cooperate as the load end in the jack-in process, convenient construction prevents from destroying in the jack-in process pipe end.Spigot and socket type ductile iron pipe female end inboard also is provided be used to the annular chamber that holds seal ring, and the effect of seal ring is to prevent to reveal in water delivery or the gas transmission process.
Described spigot and socket type spheroidal graphite cast iron tube body middle part is provided with grout hole 5.Needs according to installation exercise etc. on the spigot and socket type spheroidal graphite cast iron tube wall can be provided with grout hole 5, in order to inject anti-friction agent to the pipe outer wall when pushing tow.Grout hole 5 can be installed sealing cover with its shutoff after the pipeline installation, also can be with other method with grout hole 5 shutoff, will shutoff be filled on gap and surface around the sealing cover fully with packing (such as the epoxies material) after the grout hole 5 usefulness sealing cover shutoff, described sealing cover comprises seal groove and seal ring.
Described spigot and socket type ductile iron pipe inner wall is provided with inside liner 13, and described inside liner 13 can be slush inside liner 13, and inside liner can also be polyurethane lining or epoxy resin lining.The utility model is by coating concrete at spigot and socket type spheroidal graphite cast iron tube body outer wall, and its outer diameter adjustment is consistent, is convenient to carry out jacking construction, simultaneously in order to make things convenient for jacking, flange and gusset is set as load-carrying construction in insertion end; The utility model is similar with common concrete duct in appearance, but it has continued the premium properties of spigot and socket type ductile iron pipe, gives full play to good mechanical property, decay resistance and the compression resistance of spigot and socket type ductile iron pipe.
Embodiment 2: the difference between present embodiment and the embodiment 1 is flange group structure, the described flange group of present embodiment comprises from socket 7 outer ends along axis between three-flange 10 that inside order arranges and the second flange 9, the second flanges 9 and the three-flange 10 and is evenly arranged radially at least two the second gussets 11 around spigot and socket type ductile iron pipe axis.Between the second flange 9 and the three-flange 10 the axis gusset is set, strengthens the load end.
Embodiment 3: the difference between present embodiment and the embodiment 2 is that described three-flange 10 is provided with at least four through holes that are evenly arranged radially around its axis, it is identical with described number of openings that described spigot and socket type spheroidal graphite cast iron tube faucet 1 end is provided with quantity, and the tapped hole 16 that the position is identical, in the jacking construction process, the flange on the socket end of the female end of front pipe and rear pipe is connected by stud bolt, strengthen the rigidity that connects between two pipes, specifically realize like this, tube faucet before at first after jacking, before the pipe socket of rear pipe being inserted, stud bolt 15 is passed the through hole that arranges on the three-flange be screwed into tapped hole 16, and tighten with nut 14, and then carry out jacking.
In sum, key of the present utility model is to adhere to concrete layer at spigot and socket type ductile iron pipe outer wall, its outer diameter adjustment is consistent, constructability destroys concrete in order to prevent simultaneously in the jack-in process, the flange group is set as the load end at spigot and socket type ductile iron pipe socket end, conveniently carry out jacking, widen spigot and socket type ductile iron pipe Applicable scope, improve efficiency of construction, reducing construction cost.
Claims (7)
1. an external wrapping concrete ductile iron pipe comprises spigot and socket type spheroidal graphite cast iron tube body, and its two ends are bellmouth (1) and socket (7); It is characterized in that; Be coated with the concrete layer (4) that makes its elongated diameter identical on the described spigot and socket type spheroidal graphite cast iron tube body outer wall, accompany cylinder-shaped steel muscle net (6) in the described concrete layer (4), described socket (7) outer end is provided with the adpting flange group, the outside, described bellmouth (1) end is provided with annular boss (2), and annular boss (2) external diameter is identical with the external diameter of described concrete layer (4).
2. external wrapping concrete ductile iron pipe according to claim 1 is characterized in that: described flange group comprises the first flange (3) and is located at least four the first gussets (8) on the first flange (3) and the spigot and socket type spheroidal graphite cast iron tube body outer wall; Described the first gusset (8) is evenly arranged radially around spigot and socket type ductile iron pipe body axis.
3. external wrapping concrete ductile iron pipe according to claim 2, it is characterized in that: also be provided with collar stop (17) on the described spigot and socket type spheroidal graphite cast iron tube body outer wall, collar stop (17) contacts with described the first gusset (8) end.
4. external wrapping concrete ductile iron pipe according to claim 1, it is characterized in that: described flange group comprises from socket (7) outer end along axis three-flange (10) and second flange (9) of inwardly order setting, is evenly arranged radially at least two the second gussets (11) around spigot and socket type ductile iron pipe axis between the second flange (9) and the three-flange (10).
5. external wrapping concrete ductile iron pipe according to claim 4, it is characterized in that: described three-flange (10) is provided with at least four through holes that are evenly arranged radially around its axis, and described spigot and socket type spheroidal graphite cast iron tube faucet (1) end is provided with the tapped hole that quantity is identical with described number of openings and the position is identical (16).
6. each described external wrapping concrete ductile iron pipe according to claim 1-5 is characterized in that: described spigot and socket type spheroidal graphite cast iron tube body middle part is provided with grout hole (5).
7. external wrapping concrete ductile iron pipe according to claim 1, it is characterized in that: described spigot and socket type ductile iron pipe inner wall is provided with inside liner (13), and described inside liner (13) is the slush inside liner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220395265 CN202708364U (en) | 2012-08-10 | 2012-08-10 | Nodular cast iron pipe provided with concrete in wrapping mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220395265 CN202708364U (en) | 2012-08-10 | 2012-08-10 | Nodular cast iron pipe provided with concrete in wrapping mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708364U true CN202708364U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220395265 Expired - Fee Related CN202708364U (en) | 2012-08-10 | 2012-08-10 | Nodular cast iron pipe provided with concrete in wrapping mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708364U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777706A (en) * | 2012-08-10 | 2012-11-14 | 新兴铸管股份有限公司 | Encased concrete nodular cast iron pipe |
| CN104197119A (en) * | 2014-09-19 | 2014-12-10 | 新兴铸管股份有限公司 | Nodular cast iron pipe with composite anticorrosive coating and production method of nodular cast iron pipe |
| CN110005871A (en) * | 2019-04-25 | 2019-07-12 | 芜湖新兴铸管有限责任公司 | Push pipe gusset and flange welding structure and welding method |
-
2012
- 2012-08-10 CN CN 201220395265 patent/CN202708364U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102777706A (en) * | 2012-08-10 | 2012-11-14 | 新兴铸管股份有限公司 | Encased concrete nodular cast iron pipe |
| CN104197119A (en) * | 2014-09-19 | 2014-12-10 | 新兴铸管股份有限公司 | Nodular cast iron pipe with composite anticorrosive coating and production method of nodular cast iron pipe |
| CN104197119B (en) * | 2014-09-19 | 2016-08-17 | 新兴铸管股份有限公司 | A kind of ductile iron pipe with composite anti-corrosive coating and preparation method thereof |
| CN110005871A (en) * | 2019-04-25 | 2019-07-12 | 芜湖新兴铸管有限责任公司 | Push pipe gusset and flange welding structure and welding method |
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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: 20130130 Termination date: 20200810 |