CN107883101B - Electric smelting bypass saddle shape - Google Patents
Electric smelting bypass saddle shape Download PDFInfo
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- CN107883101B CN107883101B CN201711080424.3A CN201711080424A CN107883101B CN 107883101 B CN107883101 B CN 107883101B CN 201711080424 A CN201711080424 A CN 201711080424A CN 107883101 B CN107883101 B CN 107883101B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/082—Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
- F16L41/084—Soldered joints
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses an electric smelting bypass saddle, which relates to the field of electric smelting pipe fittings and comprises a saddle-shaped main body, a straight pipe fitting standing on the saddle-shaped main body, a bypass pipe fitting transversely arranged on the straight pipe fitting, a sealing end cap arranged at a port of the straight pipe fitting, a tool apron arranged in the straight pipe fitting and an opening tool arranged on the tool apron, wherein a first sleeve joint hole coaxial with the tool apron is formed in the tool apron; the perforating knife comprises a knife bar and a large knife head, the knife bar is sleeved with a first sleeve joint hole in a matched mode, the large knife head is fixed at the lower end of the knife bar and is coaxially arranged with the knife bar, a knife placing cavity is arranged in an inner cavity of a straight-through pipe fitting located at the upper side of a bypass pipe fitting interface, a testing cavity is arranged in an inner cavity of the straight-through pipe fitting located at the lower side of the bypass pipe fitting interface, a rotary sealing plug is arranged in the testing cavity, a second sleeve joint hole coaxial with the knife bar is formed in the knife bar, and a torsion bar is arranged in the second sleeve joint hole. In order to solve the problems, the invention provides an electric smelting bypass saddle with a sealing performance testing function and convenient operation.
Description
Technical Field
The invention relates to the field of electric smelting pipe fittings, in particular to an electric smelting bypass saddle.
Background
Polyethylene pipe fitting has been widely used in buried pipeline engineering because of its advantages such as environmental protection and strong corrosion resistance. In the operation of the buried gas pipeline, a bypass pipe is sometimes required to be connected to the gas pipeline, and the traditional method is that the gas pipeline is firstly stopped, the gas pipeline is cut off, a three-way joint is arranged, and then a bypass pipe fitting is connected to the three-way joint, but the influence range of stopping the gas on the buried pipeline engineering is large, and the economic loss is more; with the improvement of the technology, the current mainstream practice is to adopt an electric smelting bypass saddle shape without stopping gas, see the following patents: the patent name is "electric melting saddle-shaped three-way pipe fitting for buried pipeline", the authorized bulletin number is CN201688069U, the authorized bulletin day is 2010 12 month 29 days, it includes: the device comprises a bottom support at the lower part, a saddle-shaped main body at the upper part, a hole opening device arranged in the saddle-shaped main body and a sealing device arranged at the upper end of the saddle-shaped main body, wherein the hole opening device comprises a drilling cutter. The electric heating wire on the inner surface of the saddle-shaped main body is welded with the outer surface of a pipeline in use, and then the inner opening device is used for opening holes on the pipeline to lead out the bypass pipe. The electric melting saddle shape brings great convenience for the pipeline in use to lead out the bypass pipe, but after the pipeline is welded with the outer surface of the pipeline, the sealing property of the welded part is difficult to ensure, and if the welding is unqualified, leakage occurs, and great potential safety hazard and loss can be caused. Therefore, the electric melting saddle needs to be subjected to a sealing performance test after being welded with the outer surface of the pipeline, and the current electric melting saddle has no self-contained sealing performance test function, and is inconvenient to operate if external test equipment is needed.
Disclosure of Invention
In order to solve the problems, the invention provides an electric smelting bypass saddle with a sealing performance testing function and convenient operation.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the electric smelting bypass saddle comprises a saddle body, wherein a first electric heating wire is arranged on the inner surface of the saddle body, two first wiring terminals are arranged on the outer surface of the saddle body, and the two first wiring terminals are respectively and electrically connected with two ends of the first electric heating wire; the straight pipe fitting is fixedly connected with the straight pipe fitting, a first sealing ring is arranged between the cutter seat and the straight pipe fitting, and a first sleeving hole coaxial with the cutter seat is formed in the cutter seat; the perforating knife comprises a knife bar and a large knife head, the knife bar is sleeved with the first sleeve joint hole in a matched mode, a second sealing ring is arranged between the knife bar and the first sleeve joint hole, the large knife head is an annular knife head, the large knife head is fixed at the lower end of the knife bar and is coaxially arranged with the knife bar, and the outer wall of the large knife head is connected with the inner wall of the straight-through pipe fitting through threads; the inner cavity of the straight-through pipe fitting positioned at the upper side of the bypass pipe fitting interface is a knife-placing cavity, the inner cavity of the straight-through pipe fitting positioned at the lower side of the bypass pipe fitting interface is a testing cavity, a rotary sealing plug is arranged in the testing cavity, a thread section is arranged on the circumferential surface of the rotary sealing plug and is in threaded fit with the inner wall of the testing cavity, a third sealing ring is also arranged on the circumferential surface of the rotary sealing plug, and the third sealing ring is in sealed fit with the inner wall of the testing cavity; the cutter bar is provided with a second sleeve joint hole coaxial with the cutter bar, a torsion bar is arranged in the second sleeve joint hole, a fourth sealing ring is arranged between the torsion bar and the second sleeve joint hole, the lower end of the torsion bar is a polygonal plug connector, and a polygonal jack which can be in plug connection fit with the polygonal plug connector is arranged on the rotary sealing plug.
Preferably, the tapping knife further comprises a small knife head, the small knife head is also an annular knife head, the small knife head is located below the large knife head and is coaxially arranged with the large knife head, and the outer diameter of the small knife head is smaller than that of the large knife head.
Preferably, the upper end of the cutter bar is provided with an inner hexagonal jack, and the upper end of the torsion bar is also provided with an inner hexagonal jack.
Preferably, the second electric heating wire is circumferentially arranged on the inner wall of the sealing end cap, two second wiring terminals are arranged on the outer wall of the sealing end cap, and the two second wiring terminals are respectively and electrically connected with two ends of the second electric heating wire.
Preferably, an observation hole is formed in the outer wall of the sealing end cap corresponding to the second heating wire winding area.
Therefore, the invention has the following beneficial effects: 1. the sealing performance testing mechanism is arranged, and the sealing performance of the welding part can be detected after the electric melting saddle and the pipeline are dissolved; 2. the double-cutter-head structure is adopted, and a small cutter head at the lower side is used for assisting in sealing performance test; 3. compact structure, convenient operation, need not to join in marriage sealing performance equipment outward, improves pipeline engineering installation effectiveness.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the saddle body, the straight-through pipe and the bypass pipe according to the present invention.
Fig. 3 is a schematic structural view of the tool holder of the present invention.
Fig. 4 is a schematic structural view of the tapping knife according to the present invention.
Fig. 5 is a schematic view of the rotary sealing plug according to the present invention.
Fig. 6 is a schematic view of the structure of the torsion bar in the present invention.
Fig. 7 is a schematic view of the structure of the sealing end cap of the present invention.
Fig. 8 is a schematic structural view of the present invention in a use state.
Fig. 9 is an enlarged schematic view at a in fig. 8.
1: a saddle-shaped body; 101: a first heating wire; 2: a straight-through pipe fitting; 201: a knife placing cavity; 202: a test cavity; 3: a bypass tube; 4: sealing the end cap; 401: a second heating wire; 402: a second connection terminal; 403: an observation hole; 5: a tool apron; 501: a first socket hole; 502: a first seal ring; 6: a tapping knife; 601: a cutter bar; 602: a large cutter head; 603: a small cutter head; 604: a second socket hole; 605: a second seal ring; 7: rotating the sealing plug; 701: a threaded section; 702: a third seal ring; 703: polygonal jacks; 8: a torsion bar; 801: polygonal plug-in connector; 802: a fourth seal ring; 9: an inner hexagonal jack; 10: pressurized gas pipeline; 11: saddle collet.
Detailed Description
The invention is further described below with reference to the drawings and the detailed description.
An electric smelting bypass saddle, see fig. 1-9, comprises a saddle body 1, wherein a first electric heating wire 101 is arranged on the inner surface of the saddle body 1, the first electric heating wire 101 is used for being welded with the pipe wall of a pressure gas pipeline 10, two first wiring terminals are arranged on the outer surface of the saddle body 1, and the two first wiring terminals are respectively and electrically connected with two ends of the first electric heating wire 101; the straight-through pipe fitting 2 standing on the saddle-shaped main body 1, a bypass pipe fitting 3 transversely arranged on the straight-through pipe fitting 2, a sealing end cap 4 arranged at a port of the straight-through pipe fitting 2, a tool apron 5 arranged in the straight-through pipe fitting 2 and a perforating tool 6 arranged on the tool apron 5, wherein the tool apron 5 is fixedly connected with the straight-through pipe fitting 2, a first sealing ring 502 is arranged between the tool apron 5 and the straight-through pipe fitting 2, the first sealing ring 502 is used for further ensuring no leakage between the tool apron 5 and the straight-through pipe fitting 2, and a first sleeving hole 501 coaxial with the tool apron 5 is formed in the tool apron 5; the tapping knife 6 comprises a knife bar 601, a large knife head 602 and a small knife head 603, the knife bar 601 is sleeved with the first sleeve joint hole 501 in a matched mode, a second sealing ring 605 is arranged between the knife bar 601 and the first sleeve joint hole 501, the second sealing ring 605 is used for guaranteeing that the knife bar 601 does not leak from the first sleeve joint hole 501, an inner hexagonal jack 9 is arranged at the upper end of the knife bar 601, and the inner hexagonal jack 9 is used for being abutted to a wrench to rotate the tapping knife 6. The big tool bit 602 and the small tool bit 603 are annular tool bits, the big tool bit 602 and the small tool bit 603 are fixed at the lower end of the tool bar 601 and are coaxially arranged, the small tool bit 603 is located below the big tool bit 602, and the outer diameter of the small tool bit 603 is smaller than that of the big tool bit 602. The outer wall of the large cutter head 602 is connected with the inner wall of the straight-through pipe fitting 2 through threads, and the large cutter head 602 can rotate and lift along the threads on the inner wall of the straight-through pipe fitting 2.
The inner cavity of the straight-through pipe fitting 2 positioned at the upper side of the interface of the bypass pipe fitting 3 is a cutter-placing cavity 201, the cutter holder 5 is positioned in the cutter-placing cavity 201, the inner cavity of the straight-through pipe fitting 2 positioned at the lower side of the interface of the bypass pipe fitting 3 is a testing cavity 202, a rotary sealing plug 7 is arranged in the testing cavity 202, a thread section 701 is arranged on the circumferential surface of the rotary sealing plug 7, the thread section 701 is in threaded fit with the inner wall of the testing cavity 202, the rotary sealing plug 7 can rotate and lift along the thread of the inner wall of the testing cavity 202, a third sealing ring 702 is further arranged on the circumferential surface of the rotary sealing plug 7, the third sealing ring 702 is in sealed fit with the inner wall of the testing cavity 202, and leakage between the third sealing ring 702 and the testing cavity 202 is guaranteed. The cutter bar 601 is provided with a second sleeve joint hole 604 coaxial with the cutter bar, a torsion bar 8 is arranged in the second sleeve joint hole 604, a fourth sealing ring 802 is arranged between the torsion bar 8 and the second sleeve joint hole 604, the fourth sealing ring 802 is used for guaranteeing that no leakage exists between the torsion bar 8 and the second sleeve joint hole 604, the upper end of the torsion bar 8 is provided with an inner hexagonal jack 9, the inner hexagonal jack 9 is used for butting the rotary torsion bar 8 of the inner hexagonal wrench, the lower end of the torsion bar 8 is provided with a polygonal plug 801, and the rotary sealing plug 7 is provided with a polygonal jack 703 which can be in plug fit with the polygonal plug 801.
The circumference of the inner wall of the sealing end cap 4 is provided with a second heating wire 401, the second heating wire 401 is used for welding the inner wall of the sealing end cap 4 and the outer wall of the port of the straight-through pipe fitting 2, the outer wall of the sealing end cap 4 is provided with two second wiring terminals 402, the two second wiring terminals 402 are respectively and electrically connected with two ends of the second heating wire 401, an observation hole 403 is formed in the outer wall of the sealing end cap 4 corresponding to a wire winding area of the second heating wire 401, and the observation hole 403 is used for observing welding conditions between the inner wall of the sealing end cap 4 and the outer wall of the port of the straight-through pipe fitting 2. The whole sealing end cap 4 is used for blocking the upper port of the straight-through pipe fitting 2, so that gas or liquid in a pipe can not leak out of the pipe from a clearance of the cutter seat 5 or the perforating cutter 6 after the electric smelting bypass saddle is in butt joint with the pressure gas pipeline 10 and the perforating is finished.
When the gas pipeline is installed and used, the welding surface of the pressurized gas pipeline 10 is cleaned, dehumidified, and the oxide layer on the welding surface of the pipe to be welded is scraped uniformly and comprehensively, the thickness is 0.1-0.2 mm, and the welding surface is wiped clean by absolute alcohol. And then the saddle-shaped main body 1 of the electric melting saddle shape is erected on the pressure gas pipeline 10, a saddle-shaped collet 11 is installed at the lower side of the pressure gas pipeline 10, the two sides of the saddle-shaped main body 1 and the two sides of the saddle-shaped collet 11 are respectively fixed through bolts, and the fusion welding surface at the lower side of the saddle-shaped main body 1 is ensured to be matched with the surface of the pressure gas pipeline 10, as shown in fig. 8. And after the bypass saddle fixing is completed, two first wiring terminals on the outer surface of the saddle-shaped main body 1 are electrified by using an electric fusion welding machine, and electric fusion welding between the saddle-shaped main body 1 and the pressure gas pipeline 10 is carried out. After the welding is finished, the original state is kept to be fully cooled, and the cooling time is more than or equal to 30 minutes. After cooling, the test cavity 202 between the lower side of the rotary sealing plug 7 and the pipe wall of the pressure gas pipe 10 is a sealed cavity. The inner hexagonal wrench which is matched is inserted into the inner hexagonal jack 9 at the upper end of the torsion bar 8, the whole torsion bar 8 is pressed down, the polygonal plug 801 at the lower end of the torsion bar 8 is ensured to be plugged with the polygonal jack 703 on the rotary sealing plug 7, then the torsion bar 8 is rotated, the rotary sealing plug 7 is driven to rotate and move downwards by the rotation of the torsion bar 8, the test cavity 202 between the lower side of the rotary sealing plug 7 and the pipe wall of the pressure-relief gas pipeline 10 is compressed, and the gas pressure in the test cavity 202 is increased, so that a test high pressure is formed in the test cavity. The value of the test air pressure in the sealed cavity can be adjusted by adjusting the downward rotation displacement of the rotary sealing plug 7. According to national standard or enterprise standard, after certain time of pressurize, take off the allen wrench of the allen jack 9 of torsion bar 8 upper end, change the allen wrench with the allen jack 9 adaptation in cutter arbor 601 upper end, rotatory cutter arbor 601, whole trompil sword 6 is rotatory down moves, little tool bit 603 contacts with rotary seal plug 7 and cuts through rotary seal plug 7 earlier, when the hole of operating personnel accessible bypass pipe fitting 3 observes and judges that little tool bit 603 cuts through rotary seal plug 7, whether there is high-pressure air current leakage in the test cavity 202 between rotary seal plug 7 downside and the gas pipeline 10 pipe wall of pressure. If the welding points exist, the welding points between the lower side welding surface of the saddle-shaped main body 1 and the pipe wall of the pressure gas pipeline 10 are free from leakage, and the welding is qualified; if not, the leakage exists at the welding point between the lower side welding surface of the saddle-shaped main body 1 and the pipe wall of the pressure gas pipe 10, the welding is unqualified, and the disassembly and the re-welding are needed. If the weld is acceptable, the operator may butt-joint the pipe to be diverted at the port of the bypass pipe 3. After the bypass pipe fitting 3 is in butt joint with the split pipe, the hole cutter 6 is continuously rotated to move down, and the small cutter head 603 and the large cutter head 602 sequentially cut through the pipe wall of the pressure-bearing gas pipe 10, at this time, the pressure-bearing gas pipe 10 is communicated with the bypass pipe fitting 3. After the hole is formed, the hole forming knife 6 is rotated to be lifted to the initial position in the knife placing cavity 201, and the opening of the pressure gas pipeline 10 is ensured to be unobstructed. Finally, the upper end of the straight-through pipe fitting 2 is sleeved with the sealing end cap 4, two second wiring terminals 402 on the outer wall of the sealing end cap 4 are electrified by an electric fusion welding machine, electric fusion welding between the sealing end cap 4 and the straight-through pipe fitting 2 is carried out, the fusion welding condition between the inner wall of the sealing end cap 4 and the outer wall of the port of the straight-through pipe fitting 2 is observed through an observation hole 403, and the whole electric fusion bypass saddle-shaped installation process is completed after fusion welding and cooling are completed.
Claims (3)
1. The utility model provides an electric smelting bypass saddle, includes saddle main part (1), be equipped with first heating wire (101) on the internal surface of saddle main part (1), be equipped with two first binding post on the surface of saddle main part (1), two first binding post are connected with first heating wire (101) both ends electricity respectively; the novel straight-through pipe fitting comprises a saddle-shaped main body (1), a straight-through pipe fitting (2), a bypass pipe fitting (3) transversely arranged on the straight-through pipe fitting (2), a sealing end cap (4) arranged at a port of the straight-through pipe fitting (2), a tool apron (5) arranged in the straight-through pipe fitting (2) and a tapping tool (6) arranged on the tool apron (5), wherein the tool apron (5) is fixedly connected with the straight-through pipe fitting (2), a first sealing ring (502) is arranged between the tool apron (5) and the straight-through pipe fitting (2), and a first sleeving hole (501) coaxial with the tool apron (5) is formed in the tool apron (5); the tapping knife (6) comprises a knife bar (601) and a large knife head (602), the knife bar (601) is sleeved with a first sleeve joint hole (501) in a matched mode, a second sealing ring (605) is arranged between the knife bar (601) and the first sleeve joint hole (501), the large knife head (602) is an annular knife head, the large knife head (602) is fixed at the lower end of the knife bar (601) and is coaxially arranged with the knife bar (601), and the outer wall of the large knife head (602) is connected with the inner wall of a straight-through pipe fitting (2) through threads, and the tapping knife is characterized in that: the inner cavity of the straight-through pipe fitting (2) positioned at the upper side of the interface of the bypass pipe fitting (3) is a cutter placing cavity (201), the inner cavity of the straight-through pipe fitting (2) positioned at the lower side of the interface of the bypass pipe fitting (3) is a testing cavity (202), a rotary sealing plug (7) is arranged in the testing cavity (202), a thread section (701) is arranged on the circumferential surface of the rotary sealing plug (7), the thread section (701) is in threaded fit with the inner wall of the testing cavity (202), a third sealing ring (702) is further arranged on the circumferential surface of the rotary sealing plug (7), and the third sealing ring (702) is in sealed fit with the inner wall of the testing cavity (202); the cutter bar (601) is provided with a second sleeve joint hole (604) coaxial with the cutter bar, a torsion bar (8) is arranged in the second sleeve joint hole (604), a fourth sealing ring (802) is arranged between the torsion bar (8) and the second sleeve joint hole (604), the lower end of the torsion bar (8) is a polygonal plug (801), and the rotary sealing plug (7) is provided with a polygonal jack (703) which can be in plug-in fit with the polygonal plug (801);
the tapping knife (6) further comprises a small knife head (603), the small knife head (603) is also an annular knife head, the small knife head (603) is located below the large knife head (602) and is coaxially arranged with the large knife head (602), and the outer diameter of the small knife head (603) is smaller than that of the large knife head (602);
the upper end of the cutter bar (601) is provided with an inner hexagonal jack (9), and the upper end of the torsion bar (8) is also provided with an inner hexagonal jack (9).
2. The electrofusion bypass saddle of claim 1 wherein: the sealing end cap (4) inner wall circumference is equipped with second heating wire (401), and sealing end cap (4) outer wall is equipped with two second binding post (402), and two second binding post (402) are connected with second heating wire (401) both ends electricity respectively.
3. The electrofusion bypass saddle of claim 2 wherein: an observation hole (403) is formed in the outer wall of the sealing end cap (4) corresponding to the wire winding area of the second heating wire (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080424.3A CN107883101B (en) | 2017-11-06 | 2017-11-06 | Electric smelting bypass saddle shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711080424.3A CN107883101B (en) | 2017-11-06 | 2017-11-06 | Electric smelting bypass saddle shape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107883101A CN107883101A (en) | 2018-04-06 |
| CN107883101B true CN107883101B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711080424.3A Active CN107883101B (en) | 2017-11-06 | 2017-11-06 | Electric smelting bypass saddle shape |
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| CN (1) | CN107883101B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538843B (en) * | 2019-01-08 | 2020-12-25 | 湖北钟格塑料管有限公司 | Branching natural gas pipeline |
| CN109611632A (en) * | 2019-01-22 | 2019-04-12 | 济南市公明新技术开发有限公司 | A kind of pipeline with pressure aperture attachment device and construction technology |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5484090B2 (en) * | 2009-02-12 | 2014-05-07 | 積水化学工業株式会社 | Saddle type branch joint |
| CN103672269B (en) * | 2013-12-11 | 2016-01-20 | 河北一塑管道制造有限责任公司 | Conveyance conduit saddle bypass press and open holes connection set |
| CN203979743U (en) * | 2014-07-04 | 2014-12-03 | 邢梓杉 | Plastic conveying and plastic drilling under pressure of pipeline electric-melting saddle-shaped bypass |
| CN104405991B (en) * | 2014-10-20 | 2016-11-23 | 邢梓杉 | Plastic conveying and plastic pipeline saddle type boring device and boring method thereof |
| CN104819356B (en) * | 2015-03-23 | 2017-05-31 | 浙江庆发管业科技有限公司 | Carry valve PE hot melt saddle bypass and mounting process |
| CN205208027U (en) * | 2015-12-21 | 2016-05-04 | 宁波恒元精工管阀科技有限公司 | Prevent back pressure saddle -type |
| CN205745845U (en) * | 2016-05-17 | 2016-11-30 | 南京斯凯汽车设备制造有限责任公司 | A kind of engine pipelines fast plugging device |
| CN207514468U (en) * | 2017-11-06 | 2018-06-19 | 宁波市宇华电器有限公司 | A kind of electric smelting bypasses saddle type |
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2017
- 2017-11-06 CN CN201711080424.3A patent/CN107883101B/en active Active
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Address after: 315414 No. 71, West Road, Hemudu Town, Yuyao City, Ningbo City, Zhejiang Province Applicant after: Ningbo Yuhua Industrial Co.,Ltd. Address before: 315414 No. 71, West Road, Hemudu Town, Yuyao City, Ningbo City, Zhejiang Province Applicant before: NINGBO YUHUA ELECTRIC APPLIANCE Co.,Ltd. |
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