CN219432730U - Corrosion-resistant composite novel three-way pipe fitting for internal surfacing of transition arc - Google Patents
Corrosion-resistant composite novel three-way pipe fitting for internal surfacing of transition arc Download PDFInfo
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- CN219432730U CN219432730U CN202223424409.5U CN202223424409U CN219432730U CN 219432730 U CN219432730 U CN 219432730U CN 202223424409 U CN202223424409 U CN 202223424409U CN 219432730 U CN219432730 U CN 219432730U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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Abstract
The utility model relates to the technical field of pipe fittings and discloses a novel corrosion-resistant composite three-way pipe fitting for internal surfacing of a transitional arc. The three-way shell, the first lining pipe and the second lining pipe are positioned through the auxiliary pins, so that the problem that the first lining pipe and the second lining pipe are easy to deviate in the initial welding stage is solved, the surfacing operation is convenient, the rejection rate is reduced, and the production cost is reduced.
Description
Technical field:
the utility model relates to the technical field of pipe fittings, in particular to a novel corrosion-resistant composite three-way pipe fitting for internal surfacing of a transitional arc.
The background technology is as follows:
the traditional three-way pipe is difficult to be applied to a strong corrosion environment and is connected with the bimetal composite pipe due to poor corrosion resistance. The pure corrosion-resistant alloy tee joint has better corrosion resistance, but cannot be applied to occasions with higher pressure due to lower strength. The patent publication No. CN 103411072B discloses a corrosion-resistant alloy lining composite tee joint for internal surfacing of a transitional arc, which comprises a tee joint pipe consisting of a main pipe and a branch pipe, wherein a first lining pipe is coaxially arranged in the main pipe, a second lining pipe is coaxially arranged in the branch pipe, a mounting hole is formed in the side wall of the first lining pipe, the second lining pipe is arranged in the branch pipe from outside to inside, the inner end of the second lining pipe is arranged on the mounting hole, the inner end of the second lining pipe is connected with the mounting hole in a surfacing manner, and the section of a surfacing layer formed between the inner end of the second lining pipe and the mounting hole is arc-shaped; the material of the lining pipe I, the lining pipe II and the overlaying layer is corrosion-resistant alloy. The tee joint has the following problems in the production process: in the specification 0010 section, the shape of the inner end of the lining pipe II and the shape of the mounting hole are saddle-shaped, so that a certain position relationship exists between the lining pipe II and the mounting hole before welding, and the lining pipe I and the lining pipe II are not limited and positioned before welding; when the welding work is started, the first lining pipe and the second lining pipe are easy to deviate, so that the welding work load is increased or the whole tee joint is scrapped, and the production cost is increased.
The utility model comprises the following steps:
the utility model aims to provide a novel corrosion-resistant composite three-way pipe fitting for internal surfacing of a transitional arc, which positions a three-way shell, a first lining pipe and a second lining pipe through auxiliary pins, and solves the problem that the first lining pipe and the second lining pipe are easy to deviate in the initial stage of welding, thereby facilitating surfacing work, reducing rejection rate and reducing production cost.
The technical aim of the utility model is realized by the following technical scheme:
the corrosion-resistant composite novel three-way pipe fitting comprises a three-way shell, a first lining pipe, a second lining pipe and two auxiliary pins, wherein the first lining pipe is inserted and sleeved in a transverse channel of the three-way shell, and the second lining pipe is inserted and sleeved in a longitudinal channel of the three-way shell; the joint of the transverse channel and the longitudinal channel is arc-shaped;
a lateral wall of the lateral channel is provided with a lateral positioning base hole, and a lateral wall of the longitudinal channel is provided with a longitudinal positioning base hole; the first lining pipe is provided with a first positioning hole, the second lining pipe is provided with a second positioning hole, and one auxiliary pin is inserted into the transverse positioning base hole and the first positioning hole; the other auxiliary pin is inserted in the longitudinal positioning base hole and the second positioning hole;
the middle part of the first lining pipe is provided with a through hole corresponding to the second lining pipe, the through hole is elliptical, and the through hole and the first positioning hole can be formed by one-step stamping so as to ensure the position degree between the through hole and the first positioning hole; the lower end of the second lining pipe is provided with a saddle-shaped curved surface, the saddle-shaped curved surface and the second positioning hole can be punched at one time, and the position accuracy of the saddle-shaped curved surface and the second positioning hole can be improved; the through hole is fixedly connected with the saddle-shaped curved surface at the lower end of the second lining pipe through a weld overlay; and the build-up welding layer is fixedly connected with the inner wall of the tee shell in a fusion way.
According to the technical scheme, the first lining pipe is inserted into the transverse channel of the three-way shell, and then one auxiliary pin is inserted into the transverse positioning base hole and the first positioning hole, so that the first lining pipe is positioned;
inserting the second lining pipe into the longitudinal channel, and inserting the other auxiliary pin into the longitudinal positioning base hole and the second positioning hole so as to position the second lining pipe;
at this time, the lower end of the second lining pipe is aligned with the through hole, and then a transition arc is welded between the through hole and the lower end of the second lining pipe by a surfacing method, wherein the transition arc is a surfacing layer. The saddle-shaped curved surface at the lower end of the lining pipe II is inserted into the through hole compared with the flat-bottom-shaped lining pipe, the saddle-shaped curved surface at the lower end of the lining pipe II is more matched with the outline of the through hole, the welding quantity of the surfacing layer can be reduced, the contact area between the lining pipe II and the surfacing layer can be increased, and the welding firmness is improved.
The utility model is further arranged to: the auxiliary pin is in a step cylinder shape, the outer diameter of the large end part of the auxiliary pin is in transition fit with the inner diameter of the transverse positioning base hole and the inner diameter of the longitudinal positioning base hole, and the outer diameter of the small end part of the auxiliary pin is in transition fit with the inner diameter of the first positioning hole and the inner diameter of the second positioning hole.
Through the technical scheme, the auxiliary pin is in a step cylinder shape and is convenient to insert into the corresponding hole; and the auxiliary pin and the corresponding hole are arranged in a transition fit manner, so that the effect of high compressive strength of the later-stage pipe fitting can be achieved, and the sealing performance is good.
The utility model is further arranged to: and one end, far away from the big end, of the lower end part of the auxiliary pin is provided with a cone part in a forming mode.
Through the technical scheme, the cone part can play a role in guiding so that the auxiliary pin is conveniently inserted into the corresponding hole; meanwhile, the cone part can guide the lining pipe I and the lining pipe II which are positioned at a certain low cost;
after the auxiliary pin is inserted and before surfacing, the outer end and the inner end of the auxiliary pin are required to be cut, the outer end is flush with the outer wall of the three-way shell, and the inner end is flush with the inner wall of the corresponding lining pipe I or lining pipe II.
The utility model is further arranged to: an inner convex ring is formed at one end of the transverse channel;
one end of the first lining pipe is provided with a small-diameter part in a forming mode, and the small-diameter part is inserted into the inner convex ring in a clearance fit mode with the inner diameter of the inner convex ring.
Through the technical scheme, the small diameter part I of the lining pipe I has a guiding function, so that the lining pipe I is convenient to insert into the transverse channel; the step surface of the inner convex ring and the step surface of the small diameter part can initially position the insertion depth of the liner pipe.
The outer diameter of the first lining pipe is in clearance fit with the inner diameter of the transverse channel; the outer diameter of the second lining pipe is in clearance fit with the inner diameter of the longitudinal channel.
The utility model has the outstanding effects that:
the three-way shell, the first lining pipe and the second lining pipe are positioned through the auxiliary pins, so that the problem that the first lining pipe and the second lining pipe are easy to deviate in the initial welding stage is solved, the surfacing operation is convenient, the rejection rate is reduced, and the production cost is reduced.
Description of the drawings:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of a three-way housing according to the present utility model;
FIG. 3 is a schematic view of the structure of a first liner tube of the present utility model;
FIG. 4 is a schematic view of a second embodiment of the liner tube of the present utility model;
FIG. 5 is a schematic view of the auxiliary pin of the present utility model;
FIG. 6 is a schematic view of the processing sequence of the present utility model.
Reference numerals: 1. A three-way housing; 11. a transverse channel; 12. a longitudinal channel; 13. transversely positioning the base hole; 14. longitudinally positioning the base hole; 15. an inner convex ring;
2. a first lining pipe; 21. a first positioning hole; 22. a through hole; 23. a small diameter portion;
3. a second lining pipe; 31. a second positioning hole; 32. saddle-type curved surfaces;
4. an auxiliary pin; 41. a cone portion;
5. and (5) a build-up welding layer.
The specific embodiment is as follows:
the following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.
The present utility model is described below with reference to fig. 1 to 6:
the corrosion-resistant composite novel three-way pipe fitting comprises a three-way shell 1, a first lining pipe 2, a second lining pipe 3 and two auxiliary pins 4, wherein the first lining pipe 2 is inserted in a transverse channel 11 of the three-way shell 1, and the second lining pipe 3 is inserted in a longitudinal channel 12 of the three-way shell 1; the joint of the transverse channel and the longitudinal channel is arc-shaped;
a lateral positioning base hole 13 is formed on the lateral wall of the lateral channel 11, and a longitudinal positioning base hole 14 is formed on the lateral wall of the longitudinal channel 12; the first lining pipe 2 is provided with a first positioning hole 21, the second lining pipe 3 is provided with a second positioning hole 31, and one auxiliary pin 4 is inserted into the transverse positioning base hole 13 and the first positioning hole 21; the other auxiliary pin 4 is inserted in the longitudinal positioning base hole 14 and the second positioning hole 31;
the middle part of the lining pipe I2 is provided with a through hole 22 corresponding to the lining pipe II 3, the through hole 22 is in an elliptic shape, and the through hole and the first positioning hole can be formed by one-step stamping so as to ensure the position degree between the two; the lower end of the second lining pipe 3 is provided with a saddle-shaped curved surface 32, and the saddle-shaped curved surface and the second positioning hole can be punched at one time, so that the position accuracy of the saddle-shaped curved surface and the second positioning hole can be improved; the through hole 22 is fixedly connected with the saddle-shaped curved surface 32 at the lower end of the second lining pipe 3 through the overlaying layer 5; the surfacing layer 5 is fixedly connected with the inner wall of the three-way shell 1 in a fusion way.
Inserting the first lining pipe into the transverse channel of the three-way shell, and then inserting one auxiliary pin into the transverse positioning base hole 13 and the first positioning hole, so as to position the first lining pipe;
inserting the second lining pipe into the longitudinal channel, and inserting the other auxiliary pin into the longitudinal positioning base hole and the second positioning hole so as to position the second lining pipe;
at this time, the lower end of the second lining pipe is aligned with the through hole 22, and then a transition arc is welded between the through hole and the lower end of the second lining pipe by a build-up welding method, and the transition arc is the build-up welding layer. The saddle-shaped curved surface at the lower end of the lining pipe II is inserted into the through hole compared with the flat-bottom-shaped lining pipe, the saddle-shaped curved surface at the lower end of the lining pipe II is more matched with the outline of the through hole, the welding quantity of the surfacing layer can be reduced, the contact area between the lining pipe II and the surfacing layer can be increased, and the welding firmness is improved.
The auxiliary pin 4 is in a step cylinder shape, the outer diameter of the large end part of the auxiliary pin 4 is in transition fit with the inner diameter of the transverse positioning base hole 13 and the inner diameter of the longitudinal positioning base hole 14, and the outer diameter of the small end part of the auxiliary pin 4 is in transition fit with the inner diameter of the first positioning hole 21 and the inner diameter of the second positioning hole 31.
The auxiliary pin is in a step cylinder shape and is convenient to insert into the corresponding hole; and the auxiliary pin and the corresponding hole are arranged in a transition fit manner, so that the effect of high compressive strength of the later-stage pipe fitting can be achieved, and the sealing performance is good.
The lower end of the auxiliary pin 4 is formed with a taper 41 at the end far from the large end.
The cone part can play a role in guiding so that the auxiliary pin is conveniently inserted into the corresponding hole; meanwhile, the cone part can guide the lining pipe I and the lining pipe II which are positioned at a certain low cost;
after the auxiliary pin is inserted and before surfacing, the outer end and the inner end of the auxiliary pin are required to be cut, the outer end is flush with the outer wall of the three-way shell, and the inner end is flush with the inner wall of the corresponding lining pipe I or lining pipe II.
An inner convex ring 15 is formed at one end of the transverse channel 11;
one end of the first lining pipe 2 is provided with a small diameter part 23, and the small diameter part 23 is inserted into the inner convex ring 15 in a clearance fit with the inner diameter of the inner convex ring 15.
The small diameter part I of the lining pipe I has a guiding function, so that the lining pipe I is convenient to insert into the transverse channel; the step surface of the inner convex ring and the step surface of the small diameter part can initially position the insertion depth of the liner pipe.
The outer diameter of the liner pipe I2 is in clearance fit with the inner diameter of the transverse channel 11; the outer diameter of the second lining pipe 3 is in clearance fit with the inner diameter of the longitudinal passage 12.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (5)
1. The utility model provides a novel three-way pipe fitting of corrosion-resistant complex of build-up welding in transition circular arc, includes three-way casing (1), inside lining pipe one (2), inside lining pipe two (3) and two auxiliary pin (4), its characterized in that: the lining pipe I (2) is inserted in a transverse channel (11) of the tee shell (1), and the lining pipe II (3) is inserted in a longitudinal channel (12) of the tee shell (1);
a lateral positioning base hole (13) is formed on the lateral wall of the lateral channel (11), and a longitudinal positioning base hole (14) is formed on the lateral wall of the longitudinal channel (12); a first positioning hole (21) is formed in the first lining pipe (2), a second positioning hole (31) is formed in the second lining pipe (3), and one auxiliary pin (4) is inserted into the transverse positioning base hole (13) and the first positioning hole (21); the other auxiliary pin (4) is inserted into the longitudinal positioning base hole (14) and the second positioning hole (31);
the middle part of the lining pipe I (2) is provided with a through hole (22) corresponding to the lining pipe II (3), and the through hole (22) is in an elliptic shape; the lower end of the second lining pipe (3) is provided with a saddle-shaped curved surface (32), and the through hole (22) is fixedly connected with the saddle-shaped curved surface (32) at the lower end of the second lining pipe (3) through a surfacing layer (5); the build-up welding layer (5) is fixedly connected with the inner wall of the three-way shell (1) in a fusion way.
2. The corrosion-resistant composite novel three-way pipe fitting for the arc internal surfacing of the transition metal pipe fitting is characterized in that: the auxiliary pin (4) is in a step cylinder shape, the outer diameter of the large end part of the auxiliary pin (4) is in transition fit with the inner diameter of the transverse positioning base hole (13) and the inner diameter of the longitudinal positioning base hole (14), and the outer diameter of the small end part of the auxiliary pin (4) is in transition fit with the inner diameter of the first positioning hole (21) and the inner diameter of the second positioning hole (31).
3. The corrosion-resistant composite novel three-way pipe fitting for the arc internal surfacing of the transition metal according to claim 2, wherein: a cone part (41) is formed at one end of the lower end part of the auxiliary pin (4) far away from the big end part.
4. The corrosion-resistant composite novel three-way pipe fitting for the arc internal surfacing of the transition metal pipe fitting is characterized in that: an inner convex ring (15) is formed at one end of the transverse channel (11);
one end of the lining pipe I (2) is provided with a small-diameter part (23), and the small-diameter part (23) is inserted into the inner convex ring (15) and is in clearance fit with the inner diameter of the inner convex ring (15).
5. The corrosion-resistant composite novel three-way pipe fitting for the arc internal surfacing of the transition metal pipe fitting is characterized in that: the outer diameter of the lining pipe I (2) is in clearance fit with the inner diameter of the transverse channel (11); the outer diameter of the second lining pipe (3) is in clearance fit with the inner diameter of the longitudinal channel (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223424409.5U CN219432730U (en) | 2022-12-20 | 2022-12-20 | Corrosion-resistant composite novel three-way pipe fitting for internal surfacing of transition arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223424409.5U CN219432730U (en) | 2022-12-20 | 2022-12-20 | Corrosion-resistant composite novel three-way pipe fitting for internal surfacing of transition arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219432730U true CN219432730U (en) | 2023-07-28 |
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ID=87332351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223424409.5U Active CN219432730U (en) | 2022-12-20 | 2022-12-20 | Corrosion-resistant composite novel three-way pipe fitting for internal surfacing of transition arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219432730U (en) |
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2022
- 2022-12-20 CN CN202223424409.5U patent/CN219432730U/en active Active
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