CN112082028A - High-parameter hydrogenation device pipeline mixer and design and manufacturing method thereof - Google Patents
High-parameter hydrogenation device pipeline mixer and design and manufacturing method thereof Download PDFInfo
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- CN112082028A CN112082028A CN202010841896.1A CN202010841896A CN112082028A CN 112082028 A CN112082028 A CN 112082028A CN 202010841896 A CN202010841896 A CN 202010841896A CN 112082028 A CN112082028 A CN 112082028A
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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
- F16L41/02—Branch units, e.g. made in one piece, welded, riveted
- F16L41/021—T- or cross-pieces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
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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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/08—Coatings characterised by the materials used by metal
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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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/188—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for branching pipes; for joining pipes to walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F2035/35—Use of other general mechanical engineering elements in mixing devices
- B01F2035/351—Sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses a high-parameter hydrogenation device pipeline mixer and a design and manufacturing method thereof, which aim to solve the problems of easy corrosion, use and repair caused by corrosion and processing caused by unreasonable structure or process. Comprises a main pipe, a branch pipe, a sleeve, a reducing tee and a surfacing lug boss; the method replaces the branch pipe inserted into the main pipe with a tee joint; the tee joint is a reducing tee joint; the sleeves are additionally arranged on the inner walls of the main pipe and the branch pipes, so that the requirement of the pipeline mixer on corrosion resistance of a medium mixing section is met, and thermal stress caused by medium mixing can be released; the method of expansion welding is adopted, so that the joint performance and the sealing performance of the two components are favorably ensured; the joint of the main pipe and the branch pipe adopts a reducing tee structure, and has the advantages of simple structure, reliable strength, easy processing and low manufacturing cost.
Description
Technical Field
The invention relates to the technical field of petrochemical industry, in particular to a high-parameter hydrogenation device pipeline mixer which is suitable for a hydrofining and hydrocatalytic cracking device of oil products.
Background
With the increasing strengthening of environmental regulations and the need for producing environmentally friendly products and high-quality chemical raw materials, hydrogenation technology has emerged domestically since the last 90 s. The hydrogenation technology mainly uses petroleum fractionation as a hydrogenation reaction of raw materials, can be divided into two fields of hydrofining and hydrocracking, is a main technical means of secondary processing of modern oil products and heavy oil lightening, and becomes an important process treatment method for producing high-quality gasoline, diesel oil, aviation kerosene and high-quality chemical raw materials. The hydrogenation device pipeline mixer injects the circulating hydrogen or the quenching hydrogen into the main pipeline in a pressurizing way through the branch pipe, and the high-temperature oil product and the injected cold hydrogen are mixed in the mixer. At present, with the gradual increase of high-temperature, high-pressure and other high-parameter hydrogenation devices, the service environment of the pipeline mixer becomes more and more harsh. Because heat exchange and fluid turbulence are generated in the mixing process, the corrosivity of the medium is enhanced, the material of the main pipeline in the area near the mixing of the medium cannot meet the requirement of corrosion resistance, and the material of the pipeline needs to be locally upgraded.
The repair after corrosion damage is unsafe. In addition, in order to weld the main pipe and the branch pipes, the branch pipes are provided with round holes, and the original wall thickness of the main pipe under high-parameter conditions generally cannot meet the requirements of hole reinforcement and needs to be reinforced.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a high-parameter hydrogenation apparatus pipeline mixer, so as to solve the problems proposed in the background art: easy corrosion, and the use and repair problems caused by the corrosion, and the processing problems caused by the unreasonable structure or process.
In order to achieve the purpose, the invention provides the following technical scheme: a high-parameter hydrogenation device pipeline mixer is characterized by comprising a main pipe, branch pipes, a sleeve, a reducing tee and a surfacing lug boss; the main pipe is one part of the pipeline; the reducing tee is a connecting part of the main pipe and the branch pipe, and the branch pipe is a flow passage for injecting a medium; two ends of the reducing tee are welded with the main pipe, and the upper end of the reducing tee is welded with the flange; the flanges are arranged at the upper end of the reducing tee and the end surface of the branch pipe, namely the interface of the reducing tee and the branch pipe; the joint adopts flange connection to provide an operation space for the sticking expansion and sealing welding of the branch pipe sleeve and the reducing tee; the sleeve comprises a main pipe sleeve and a branch pipe sleeve which are respectively cylinders lined on the inner walls of the main pipe and the reducing tee, and the corrosion resistance is superior to that of the main pipe; one end of the main pipe sleeve is sealed and welded with the main pipe after being attached and expanded, the other end of the main pipe sleeve freely slides along the axial direction of the main pipe, and a surfacing welding boss is arranged between the main pipe sleeve and the main pipe; the upper end of the branch pipe sleeve is sealed and welded with the reducing tee after being attached and expanded, the lower end of the branch pipe sleeve freely slides along the axial direction of the reducing tee, and a surfacing welding boss is arranged between the branch pipe sleeve at the end and the reducing tee; the surfacing bosses are surfacing-welded on the outer surface of the sleeve and are uniformly distributed along the circumference, so that the sleeve is axially guided and radially supported, and a gap is reserved between the main pipe or the reducing tee and the sleeve.
Further, the number of the surfacing bosses is not less than 1 group, and the last group of surfacing bosses along the axial direction of the main pipe sleeve is positioned at the tail end of the main pipe sleeve or close to the tail end of the main pipe 1.
Furthermore, the last group of surfacing bosses along the axial direction of the branch pipe sleeve are positioned at the lower end of the upper pipe of the reducing tee or close to the tail end of the branch pipe sleeve.
Further, at the position of the main pipe sleeve into which the branch pipe sleeve is inserted, the main pipe sleeve is perforated.
Furthermore, the material of the surfacing lug boss is the same as that of the sleeve, and the surfacing height of the surfacing lug boss is smaller than the gap between the main pipe or the branch pipe and the sleeve.
Furthermore, apart from the welding sealing points, a certain gap is reserved between the sleeve and the inner wall of the main pipe or the reducing tee joint, and the gap is about 4-6 mm.
Furthermore, the starting end of the sleeve along the medium flow direction is attached to the inner wall of the main pipe or the branch pipe in an expansion and sealing welding mode.
A design and manufacturing method of a pipeline mixer of a high-parameter hydrogenation device is characterized by comprising the following steps:
s1, the main pipe is a part of the pipeline, and the branch pipe is a flow channel for injecting media; the branch pipe is inserted into the joint of the main pipe and replaced by a tee joint; the tee joint is a reducing tee joint;
s2, welding the two ends of the reducing tee joint with the main pipe in a butt welding mode, wherein the diameter of the section is consistent with that of the main pipe;
s3, arranging a flange on the reducing tee at the sealing welding position of the upper end of the branch pipe sleeve and the pipeline; the upper end of the reducing tee is welded with the flange;
s4, adding sleeves on the inner walls of the main pipe and the branch pipes, wherein the corrosion resistance of the sleeves is superior to that of the main pipe; the sleeve comprises a main pipe sleeve and a branch pipe sleeve;
s5, at the position where the branch pipe sleeve is inserted into the main pipe sleeve, the main pipe sleeve is provided with a hole, so that the branch pipe sleeve is inserted into the main pipe sleeve;
s6, sealing and welding the liquid flow direction starting end of the main pipe sleeve with the main pipe after the liquid flow direction starting end is attached to the main pipe in an expanding mode, enabling the other end to freely slide along the axial direction of the main pipe, welding a surfacing welding boss on the outer peripheral wall of the main pipe sleeve at the other end, and keeping a gap between the main pipe sleeve and the main pipe;
s7, before the flange at the upper end of the reducing tee is connected with the branch pipe flange, the branch pipe sleeve is sealed and welded with the inner wall of the pipeline at the lower end of the flange after being attached and expanded; the flange of the reducing tee is in an open state before being connected with the branch pipe, so that an operation space is provided for sticking expansion and sealing welding of the reducing tee;
s8, the lower end of the branch pipe sleeve freely slides along the axial direction of the reducing tee, and the peripheral wall of the branch pipe sleeve at the end is welded with a surfacing boss to keep a gap between the main pipe sleeve and the main pipe;
and S9, connecting the upper end flange of the reducing tee joint with the flange of the branch pipe.
Further, if the main pipe is made of an iron material, the sleeve is made of a steel material.
Compared with the prior art, the invention has the beneficial effects that: 1) the material of the medium mixing section of the pipeline does not need to be upgraded integrally, and only the sleeve with stronger corrosion resistance is lined in the medium mixing section of the pipeline, so that the requirement of the pipeline mixer on the corrosion resistance of the medium mixing section is met, and the thermal stress caused by medium mixing can be released; 2) in the aspect of connection of the main pipe and the sleeve, a method of expansion welding is adopted, so that the joint performance and the sealing performance of the two components are favorably guaranteed; 3) the joint of the main pipe and the branch pipe adopts a reducing tee structure, and has the advantages of simple structure, reliable strength, easy processing and low manufacturing cost.
Drawings
FIG. 1 is a schematic front cross-sectional view of the present invention;
FIG. 2 is a schematic left side view of the present invention;
FIG. 3 is a partial schematic view of the present invention.
In the figure: 1. a main pipe; 2. a sleeve; 3. a reducing tee; 4. a flange; 5. a bolt; 6. a nut; 7. a gasket; 8. and (6) surfacing the lug boss.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a high-parameter hydrogenation device pipeline mixer which comprises a main pipe, a sleeve, a reducing tee, a build-up welding boss and other structural assemblies, wherein the main pipe is a part of a pipeline and is a flow channel of an oil medium. The sleeve is a cylinder lined on the inner walls of the main pipe and the branch pipe and is formed by selecting a steel plate with good resistance performance through roll welding. One end of the sleeve is in sealing welding with the main pipe or the branch pipe (the reducing tee or the flange) after being attached and expanded, and the other end of the sleeve freely slides along the axial direction of the main pipe or the branch pipe (the reducing tee). The reducing tee is a connecting part of a main pipe and a branch pipe, the branch pipe is a flow channel for injecting a medium, and the medium in the main pipe and the medium in the branch pipe start to be mixed at the reducing tee, so the reducing tee is called a pipeline mixer. The surfacing bosses are surfacing-welded on the outer surface of the sleeve and are uniformly distributed along the circumference, so that the sleeve is axially guided and radially supported. The flange, the bolt, the nut and the gasket are arranged on the end faces of the reducing tee joint and the branch pipe, so that an operation space is provided for the sticking expansion and the sealing welding of the inner lining sleeve of the branch pipe, and the joint of the reducing tee joint and the branch pipe is also formed.
Referring to fig. 1-3, the present invention will be described in detail with reference to the accompanying drawings and specific examples. As shown in fig. 1 and 3, the high-parameter hydrogenation device pipeline mixer comprises a main pipe 1, a sleeve 2, a reducing tee 3, a flange 4, a bolt 5, a nut 6, a gasket 7 and a surfacing boss 8.
The main pipe 1 is a seamless steel pipe, the sleeve 2 is formed by rolling a steel plate with corrosion resistance superior to that of the main pipe 1, the front end of the sleeve 2 along the medium flow direction is attached to the inner wall of the main pipe or a branch pipe (a reducing tee or a flange) in an expansion sealing welding mode, and a certain gap is reserved between the sleeve 2 and the inner wall of the main pipe 1 or the reducing tee 3 at each position of the rest, and the gap is about 4-6 mm. The reducing tee 3 is a place where the main pipe and the branch pipe medium begin to be mixed, and the reducing tee 3 is a forged piece.
Because the diameter of the hydrogenation device pipeline mixer is generally smaller, and the number of welded junctions is reduced, the branch pipeline and the reducing tee are generally integrally forged into a whole, as shown in detail fig. 3. The flange 4, the bolt 5, the nut 6 and the gasket 7 form a set of assembly parts which are selected according to the nominal diameter, the design pressure and the temperature of the branch pipe according to the current national standard or the industry standard. The flanges 4 are a pair of flanges with the same size, one flange is in butt joint with the reducing tee, and the other flange is in butt joint with the branch pipe. The material of the surfacing lug boss 8 is the same as that of the sleeve 2, the surfacing height of the surfacing lug boss is slightly smaller than the gap between the main pipe or the branch pipe and the sleeve, and the width of the surfacing lug boss is not smaller than 10 mm.
The principle of the invention is as follows:
the medium of being responsible for among the hydrogenation unit is the oil, and the branch pipe injection medium is mostly circulating hydrogen or quench hydrogen, and above-mentioned two kinds of media begin to mix at the main pipe and branch pipe junction, and wherein the oil temperature is higher, and circulating hydrogen or quench hydrogen temperature are lower, have great difference in temperature. The two media exchange heat when mixed and create turbulence, resulting in increased corrosivity of the media. Therefore, the main pipe and the branch pipe sections near the medium mixing area are lined with heat insulation sleeves with better heat resistance and corrosion resistance, and the main pipe and the branch pipe can be effectively protected.
In the connection aspect of the main pipe and the sleeve, the invention adopts the connection mode of sticking expansion and sealing welding. Specifically for be responsible for and the front end of branch pipe medium flow direction, utilize the tube expander to carry out the expand tube operation to sleeve 2, make sleeve 2's outer wall closely cooperate with being responsible for 1 inner wall, follow sleeve 2's circumference after the expand tube operation is accomplished and carry out the seal weld of whole circle, ensured the joint strength and the leakproofness of being responsible for 1 and sleeve 2 when using.
In the prior art, because of the process requirement of injecting media into the branch pipe, a hole (connected with the branch pipe) is necessarily formed in the main pipe, and the hole not only breaks the continuity of the cylindrical shell of the main pipe, but also causes stress concentration at the periphery of the hole. Particularly, the problem of open pore reinforcement is particularly obvious when the parameters such as the operation temperature, the operation pressure and the like of a mixer in a hydrogenation device are high. Therefore, the connecting part of the main pipe and the branch pipe adopts a reducing tee structure, and the structure has two main advantages: 1) the reducing tee can be locally thickened, and the edge cutting treatment is carried out on the welding part of the reducing tee and the main pipe or the branch pipe, so that the wall thickness of the welding groove is equal. 2) Because the high stress area of the perforated connecting pipe is positioned in the area near the inner corner point of the intersection of the main pipe and the connecting pipe, if the connection mode of welding the inserted connecting pipe and the main pipe is adopted, the high stress area is close to the welding seam of the inserted connecting pipe, and the inserted welding seam not only has welding defects easily, but also is not beneficial to nondestructive testing. Therefore, the structure of the reducing tee joint not only can ensure the strength of the main pipe for tapping, but also has more reliable structure.
The manufacturing process comprises the following steps: the reducing tee 3 is butt-welded with the main pipe 1 and the flange 4 respectively, a hole is formed in the position, inserted into the main pipe sleeve 2, of the branch pipe sleeve 2, and 3 surfacing bosses 8 are uniformly surfaced in the circumferential direction of the sleeve 2, as shown in fig. 2. The number of the surfacing bosses is determined by the length of the sleeve 2, the number of the surfacing bosses 8 is not less than 1 group, the last group of surfacing bosses 8 in the axial direction of the sleeve 2 are positioned at the tail end of the sleeve 2 or close to the tail end of the main pipe 1 or the branch pipe 2, and the rest surfacing bosses are uniformly distributed in the axial direction as much as possible. And inserting the sleeve 2 into the main pipe 1 and the reducing tee 3 in sequence, and performing stick expansion and seal welding on the sleeve 2. And (5) assembling the mating flange of the flange 4, the bolt 6, the nut 6 and the gasket 7, and tightening the nut 6 to complete the assembly of the flange.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. A hydrogenation device pipeline mixer is characterized by comprising a main pipe, branch pipes, a sleeve, a reducing tee joint and a surfacing lug boss;
the main pipe is one part of the pipeline;
the reducing tee is a connecting part of the main pipe and the branch pipe, and the branch pipe is a flow passage for injecting a medium; two ends of the reducing tee are welded with the main pipe, and the upper end of the reducing tee is welded with the flange;
the flanges are arranged at the upper end of the reducing tee and the end surface of the branch pipe, namely the interface of the reducing tee and the branch pipe; the joint adopts flange connection to provide an operation space for the sticking expansion and sealing welding of the branch pipe sleeve and the reducing tee;
the sleeve comprises a main pipe sleeve and a branch pipe sleeve which are respectively cylinders lined on the inner walls of the main pipe and the reducing tee, and the corrosion resistance is superior to that of the main pipe;
one end of the main pipe sleeve is sealed and welded with the main pipe after being attached and expanded, the other end of the main pipe sleeve freely slides along the axial direction of the main pipe, and a surfacing welding boss is arranged between the main pipe sleeve and the main pipe;
the upper end of the branch pipe sleeve is sealed and welded with the reducing tee after being attached and expanded, the lower end of the branch pipe sleeve freely slides along the axial direction of the reducing tee, and a surfacing welding boss is arranged between the branch pipe sleeve at the end and the reducing tee;
the surfacing bosses are surfacing-welded on the outer surface of the sleeve and are uniformly distributed along the circumference, so that the sleeve is axially guided and radially supported, and a gap is reserved between the main pipe or the reducing tee and the sleeve.
2. The hydrogenation apparatus pipeline mixer according to claim 1, wherein the number of the overlay welding bosses is not less than 1, and the last set of overlay welding bosses in the axial direction of the main pipe sleeve is located at the tail end of the main pipe sleeve or close to the tail end of the main pipe 1.
3. The hydrogenation apparatus pipeline mixer according to claim 1, wherein the last set of bead welding bosses along the axial direction of the branch pipe sleeve is located at the lower end of the upper pipe of the reducing tee or close to the tail end of the branch pipe sleeve.
4. The line mixer of claim 1, wherein the main pipe sleeve is perforated at a position of the main pipe sleeve where the branch pipe sleeve is inserted.
5. The hydrogenation apparatus pipeline mixer according to claim 1, wherein the material of the bead welding boss is the same as that of the sleeve, and the bead welding height of the bead welding boss is smaller than the gap between the main pipe or the branch pipe and the sleeve.
6. The hydrotreater pipeline mixer of claim 1, wherein the sleeve has a clearance, other than the weld seal, from about 4 mm to about 6mm from the inner wall of the main pipe or reducer tee.
7. The pipeline mixer of claim 1, wherein the beginning of the sleeve in the direction of the medium flow is welded to the inner wall of the main pipe or branch pipe by expansion and sealing.
8. The hydrogenation apparatus conduit mixer of claim 1 wherein the width of the weld-on boss is not less than 10 mm.
9. A design and manufacture method of a pipeline mixer of a hydrogenation device is characterized by comprising the following steps:
s1, the main pipe is a part of the pipeline, and the branch pipe is a flow channel for injecting media; the branch pipe is inserted into the joint of the main pipe and replaced by a tee joint; the tee joint is a reducing tee joint;
s2, welding the two ends of the reducing tee joint with the main pipe in a butt welding mode, wherein the diameter of the section is consistent with that of the main pipe;
s3, arranging a flange on the reducing tee at the sealing welding position of the upper end of the branch pipe sleeve and the pipeline; the upper end of the reducing tee is welded with the flange;
s4, adding sleeves on the inner walls of the main pipe and the branch pipes, wherein the corrosion resistance of the sleeves is superior to that of the main pipe; the sleeve comprises a main pipe sleeve and a branch pipe sleeve;
s5, at the position where the branch pipe sleeve is inserted into the main pipe sleeve, the main pipe sleeve is provided with a hole, so that the branch pipe sleeve is inserted into the main pipe sleeve;
s6, sealing and welding the liquid flow direction starting end of the main pipe sleeve with the main pipe after the liquid flow direction starting end is attached to the main pipe in an expanding mode, enabling the other end to freely slide along the axial direction of the main pipe, welding a surfacing welding boss on the outer peripheral wall of the main pipe sleeve at the other end, and keeping a gap between the main pipe sleeve and the main pipe;
s7, before the flange at the upper end of the reducing tee is connected with the branch pipe flange, the branch pipe sleeve is sealed and welded with the inner wall of the pipeline at the lower end of the flange after being attached and expanded; the flange of the reducing tee is in an open state before being connected with the branch pipe, so that an operation space is provided for sticking expansion and sealing welding of the reducing tee;
s8, the lower end of the branch pipe sleeve freely slides along the axial direction of the reducing tee, and the peripheral wall of the branch pipe sleeve at the end is welded with a surfacing boss to keep a gap between the main pipe sleeve and the main pipe;
and S9, connecting the upper end flange of the reducing tee joint with the flange of the branch pipe.
10. The method of claim 9, wherein if the main pipe is made of iron, the sleeve is made of steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010841896.1A CN112082028A (en) | 2020-08-20 | 2020-08-20 | High-parameter hydrogenation device pipeline mixer and design and manufacturing method thereof |
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| CN202010841896.1A CN112082028A (en) | 2020-08-20 | 2020-08-20 | High-parameter hydrogenation device pipeline mixer and design and manufacturing method thereof |
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| CN112082028A true CN112082028A (en) | 2020-12-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114776920A (en) * | 2022-04-24 | 2022-07-22 | 洛阳瑞泽石化工程有限公司 | High-temperature air injection equipment for FRP pipeline |
| CN114833247A (en) * | 2021-02-02 | 2022-08-02 | 偃师东方管件有限公司 | Production process of hydrogenation mixer tee joint |
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| CN201354904Y (en) * | 2009-02-12 | 2009-12-02 | 青岛东华能源设备制造有限公司 | Disposable slip-type expansion joint of heat supply pipeline |
| US20150157991A1 (en) * | 2013-12-11 | 2015-06-11 | Caltec Limited | Commingling device |
| CN106481924A (en) * | 2015-08-26 | 2017-03-08 | 中石化洛阳工程有限公司 | A kind of bushing type blender for cold fluid and hot fluid |
| CN208139881U (en) * | 2018-03-19 | 2018-11-23 | 中石化广州工程有限公司 | A kind of bushing type fluid mixing apparatus |
| CN208742326U (en) * | 2018-03-19 | 2019-04-16 | 中石化广州工程有限公司 | A kind of fluid mixing apparatus |
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| CN114833247A (en) * | 2021-02-02 | 2022-08-02 | 偃师东方管件有限公司 | Production process of hydrogenation mixer tee joint |
| CN114776920A (en) * | 2022-04-24 | 2022-07-22 | 洛阳瑞泽石化工程有限公司 | High-temperature air injection equipment for FRP pipeline |
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