CN210545005U - Chemical connection elbow - Google Patents
Chemical connection elbow Download PDFInfo
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- CN210545005U CN210545005U CN201921315331.9U CN201921315331U CN210545005U CN 210545005 U CN210545005 U CN 210545005U CN 201921315331 U CN201921315331 U CN 201921315331U CN 210545005 U CN210545005 U CN 210545005U
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Abstract
The utility model relates to a chemical connecting elbow, which comprises a first feeding pipe fitting, a second feeding pipe fitting and a mixing pipe fitting; the first feeding pipe fitting is provided with a first straight pipe, a first bent pipe, a first concentric reducer, a second straight pipe, a second concentric reducer and a second bent pipe; one end of the first pipe fitting is welded with one end of the first bent pipe, the other end of the first bent pipe is connected with the second straight pipe through the first concentric reducer, and one end, far away from the first concentric reducer, of the second straight pipe is connected with the second bent pipe through the second concentric reducer; the second feeding pipe fitting is welded on the second bent pipe; the mixing pipe fitting comprises a third straight pipe, a pipe cap and a discharging pipe fitting; the pipe cap is welded at one end of the third straight pipe, the other end of the third straight pipe is provided with a first flange seat, one end of the second bent pipe is connected with a second flange seat, and the discharging pipe fitting is welded on the side wall of the third pipe fitting. The utility model discloses a chemical industry is with connecting elbow pipe in propane dehydrogenation preparation process for reaction rate and security are synthesized and are considered the best.
Description
Technical Field
The utility model relates to a metal bending machine processing technology field, especially a chemical industry is with connecting bent pipe.
Background
Propane having the formula C3H8The structure is simply CH3CH2CH3Propane, which is normally gaseous but is generally transported after compression to a liquid state, can be obtained from the finished oil after processing of crude oil or natural gas, is commonly used as fuel for engines, barbeque foods and household heating systems, and is generally sold as liquefied petroleum gas, often mixed with propylene, butane and butylenes. Propane dehydrogenation is an important way for preparing propylene monomer by propane dehydrogenation, and the preparation of propylene from propane requires treatment of a dehydrogenation device.
Propane dehydrogenation catalysts are needed in the process of propane dehydrogenation, but one catalyst may cause over-fast reaction and bring potential safety hazards, while the other catalyst may cause slow reaction speed and influence the production efficiency of a factory, the best catalytic effect is difficult to achieve, two or more catalysts are needed to act together, the two catalysts are uniformly mixed, and the existing metal pipe fitting does not have a structure meeting the requirements.
Therefore, it is desirable to provide a chemical connecting elbow, which can solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a chemical industry is with connecting elbow, in propane dehydrogenation preparation process, can be so that two kinds of catalyst misce benes for reaction rate and security are synthesized and are considered the best.
In order to achieve the purpose of the utility model, the connecting elbow for chemical engineering comprises a first feeding pipe fitting, a second feeding pipe fitting and a mixing pipe fitting;
the first feeding pipe fitting is used for conveying a catalyst with a high content, and a first straight pipe, a first bent pipe, a first concentric reducer, a second straight pipe, a second concentric reducer and a second bent pipe are sequentially arranged on the first feeding pipe fitting along the conveying direction of the catalyst with a high content; one end of the first straight pipe is connected with a conveying pipe fitting of a catalyst with more external content, the other end of the first straight pipe is welded with one end of a first bent pipe, the inner diameters of the first straight pipe and the first bent pipe are equal, the other end of the first bent pipe is connected with a second straight pipe through a first concentric reducer, the inner diameter of the small end of the first concentric reducer is equal to the inner diameter of the first bent pipe, the inner diameter of the large end of the first concentric reducer is equal to the inner diameter of the second straight pipe, the small end of the first concentric reducer is welded on the first bent pipe, the large end of the first concentric reducer is welded on the second straight pipe, one end of the second straight pipe, far away from the first concentric reducer, is connected with the second bent pipe through a second concentric reducer, the inner diameter of the small end of the second concentric reducer is equal to the inner diameter of the second straight pipe, and the inner diameter of the large end of the second concentric reducer is equal to the inner diameter of the second bent pipe, the small end of the second concentric reducer is welded on the second straight pipe, and the large end of the second concentric reducer is welded at one end of the second bent pipe;
the second feeding pipe fitting is used for conveying the catalyst with relatively low content, the second feeding pipe fitting is a straight pipe, one end of the second feeding pipe fitting is connected with the conveying pipe fitting of the catalyst with relatively low content, and the second feeding pipe fitting is welded on the second bent pipe and communicated with the second bent pipe;
the mixing pipe fitting comprises a third straight pipe, a pipe cap and a discharging pipe fitting; the inner diameter of third straight tube equals with the inner diameter of second return bend, the pipe cap welding is in the one end of third straight tube, the other end of third straight tube is equipped with first flange seat, the second return bend is kept away from the one end of the concentric reducer of second and is connected with second flange seat, second flange seat matches with first flange seat, the third straight tube is linked together through first flange seat and second return bend, the junction between first flange seat and the second flange seat is equipped with the sealing washer, ejection of compact pipe fitting welding is in on the lateral wall of third straight tube and be linked together with the third straight tube.
Preferably, a pipe connector is arranged at the welding position of the first straight pipe and the first bent pipe.
Preferably, a fourth straight pipe is arranged at one end, away from the second concentric reducer, of the second bent pipe in a welding mode, the fourth straight pipe is communicated with the second bent pipe, the inner diameter of the fourth straight pipe is equal to that of the second bent pipe, and the second flange seat is welded on the fourth straight pipe.
Preferably, the central line of the second feeding pipe fitting coincides with the central line of the fourth straight pipe, and the second feeding pipe fitting extends to the inside of the second bent pipe and is flush with one end of the fourth straight pipe welded with the second bent pipe.
Preferably, the first straight pipe, the first bent pipe, the second feeding pipe fitting and the discharging pipe fitting are seamless pipe fittings.
The working principle is as follows: the catalyst with more content enters the mixing pipe fitting through the first feeding pipe fitting, the catalyst with relatively less content enters the mixing pipe fitting through the second feeding pipe fitting, and the catalyst and the mixing pipe fitting are fully mixed and then are conveyed to an external propane dehydrogenation reaction kettle through a discharging pipe fitting on the mixing pipe fitting to participate in reaction.
The utility model relates to a chemical industry is with connecting bend compares with prior art and has following advantage:
(1) the first feeding pipe fitting properly reduces the flow velocity of the catalyst with a large content under the condition of ensuring the reaction rate, so that the catalyst with a low content is fully mixed with the first feeding pipe fitting, and the reaction rate and the safety are comprehensively considered to be optimal in the propane dehydrogenation process;
(2) the central line of second feeding pipe fitting coincides mutually with the central line of fourth straight tube, and second feeding pipe fitting extends to the inside of second return bend, with the one end of fourth straight tube welding second return bend flushes, and catalyst that so content is lower relatively enters into the compounding pipe fitting through second feeding pipe fitting, because the central line of second feeding pipe fitting with the central line of fourth straight tube coincides mutually, to both sides evenly diffusion in the compounding pipe fitting for the higher catalyst of content further misce bene in other.
Drawings
FIG. 1 is a schematic view of a first feed tube;
FIG. 2 is a schematic view of the connection of a first feed pipe member to a second feed pipe member;
FIG. 3 is a schematic view of a construction of a mixing tube assembly;
FIG. 4 is a schematic structural view of the chemical connecting elbow pipe of the present invention;
FIG. 5 is an enlarged view of a portion of the first flange seat and the second flange seat of FIG. 4;
FIG. 6 is a cross-sectional view of the chemical connecting elbow pipe of the present invention;
fig. 7 is an enlarged view of a portion of the second feed tube member of fig. 6 connected to a second bend.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 7, a connecting elbow for chemical engineering includes a first feeding pipe, a second feeding pipe 8 and a mixing pipe;
the first feeding pipe fitting is used for conveying a catalyst with a high content, and a first straight pipe 1, a first bent pipe 2, a first concentric reducer 3, a second straight pipe 4, a second concentric reducer 5 and a second bent pipe 6 are sequentially arranged on the first feeding pipe fitting along the conveying direction of the catalyst with a high content; one end of the first straight pipe 1 is connected with a conveying pipe fitting containing more catalyst, the other end of the first straight pipe 1 is welded with one end of a first bent pipe 2, the inner diameters of the first straight pipe 1 and the first bent pipe 2 are equal, the other end of the first bent pipe 2 is connected with a second straight pipe 4 through a first concentric reducer 3, the inner diameter of the small end of the first concentric reducer 3 is equal to the inner diameter of the first bent pipe 2, the inner diameter of the large end of the first concentric reducer 3 is equal to the inner diameter of the second straight pipe 4, the small end of the first concentric reducer 3 is welded on the first bent pipe 2, the large end of the first concentric reducer 3 is welded on the second bent pipe 4, one end of the second straight pipe 4, far away from the first concentric reducer 3, is connected with a second bent pipe 6 through a second concentric reducer 5, the inner diameter of the small end of the second concentric reducer 5 is equal to the inner diameter of the second straight pipe 4, the inner diameter of the large end of the second concentric reducer 5 is equal to the inner diameter of the second bent pipe 6, the small end of the second concentric reducer 5 is welded on the second straight pipe 4, and the large end of the second concentric reducer 5 is welded at one end of the second bent pipe 6; the inventor sets up like this, and the catalyst that the content is more passes through first return bend 2 after first straight tube 1, and the velocity of flow can reduce, and after respectively passing through second straight tube 4 and second return bend 6, the velocity of flow further reduces, therefore the pressure to the pipe fitting obtains effective the reducing, and the inventor can guarantee still can guarantee the normal clear of back reaction through the catalyst of deceleration through setting for the ratio of the internal diameter of corresponding pipe fitting when preparing the pipe fitting.
The second feeding pipe fitting 8 is used for conveying the catalyst with relatively low content, the second feeding pipe fitting 8 is a straight pipe, one end of the second feeding pipe fitting 8 is connected with the conveying pipe fitting of the catalyst with relatively low content, and the second feeding pipe fitting 8 is welded on the second bent pipe 6 and communicated with the second bent pipe 6.
In order to ensure the strength of the welding position of the first straight pipe 1 and the first bent pipe 2, a pipe coupler is arranged at the welding position of the first straight pipe 1 and the first bent pipe 2.
The mixing pipe fitting comprises a third straight pipe 9, a pipe cap 10 and a discharging pipe fitting 11; the internal diameter of third straight tube 9 equals with the internal diameter of second return bend 6, cap 10 welds the one end of third straight tube 9, the other end of third straight tube 9 is equipped with first flange seat 13, the one end that the concentric reducer of second 5 was kept away from to second return bend 6 is connected with second flange seat 14, second flange seat 14 and first flange seat 13 phase-match, third straight tube 9 is linked together with second return bend 6 through first flange seat 13 and second flange seat 14, the junction between first flange seat 13 and the second flange seat 14 is equipped with the sealing washer, the welding of ejection of compact pipe fitting 11 is in on the lateral wall of third straight tube 9 and be linked together with third straight tube 9.
Further, in order to facilitate connection between the second elbow 6 and the second flange seat 14, a fourth straight pipe 7 is arranged at one end, far away from the second concentric reducer 5, of the second elbow 6 through welding, the fourth straight pipe 7 is communicated with the second elbow 6, the inner diameter of the fourth straight pipe 7 is equal to that of the second elbow 6, and the second flange seat 14 is welded on the fourth straight pipe 7.
Further, the central line of second feeding pipe fitting 8 with the central line of fourth straight tube 7 coincides mutually, second feeding pipe fitting 8 extends to the inside of second return bend 6, with the one end of fourth straight tube 7 welding second return bend 6 flushes, so the catalyst that content is lower relatively enters into the compounding pipe fitting through second feeding pipe fitting 8, because the central line of second feeding pipe fitting 8 with the central line of fourth straight tube 7 coincides mutually, evenly diffuses to both sides in the compounding pipe fitting for the higher catalyst of content is mixed evenly in other others, makes follow-up propane dehydrogenation reaction's speed and stability reach the best.
First straight tube 1, first return bend 2, second feeding pipe fitting 8 and ejection of compact pipe fitting 11 are seamless pipe fitting, fully guarantee the intensity of pipe fitting.
The working principle is as follows: the catalyst with more content enters the mixing pipe fitting through the first feeding pipe fitting, the catalyst with relatively less content enters the mixing pipe fitting through the second feeding pipe fitting 8, and the catalyst and the mixing pipe fitting are fully mixed and then are conveyed to an external propane dehydrogenation reaction kettle through the discharging pipe fitting 11 on the mixing pipe fitting to participate in reaction.
In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the drawings, are used merely for convenience of describing technical solutions and simplifying the description of the present patent, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present patent application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.
In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (5)
1. A chemical connecting elbow is characterized by comprising a first feeding pipe fitting, a second feeding pipe fitting and a mixing pipe fitting;
the first feeding pipe fitting is used for conveying a catalyst with a high content, and a first straight pipe, a first bent pipe, a first concentric reducer, a second straight pipe, a second concentric reducer and a second bent pipe are sequentially arranged on the first feeding pipe fitting along the conveying direction of the catalyst with a high content; one end of the first straight pipe is connected with a conveying pipe fitting of a catalyst with more external content, the other end of the first straight pipe is welded with one end of a first bent pipe, the inner diameters of the first straight pipe and the first bent pipe are equal, the other end of the first bent pipe is connected with a second straight pipe through a first concentric reducer, the inner diameter of the small end of the first concentric reducer is equal to the inner diameter of the first bent pipe, the inner diameter of the large end of the first concentric reducer is equal to the inner diameter of the second straight pipe, the small end of the first concentric reducer is welded on the first bent pipe, the large end of the first concentric reducer is welded on the second straight pipe, one end of the second straight pipe, far away from the first concentric reducer, is connected with the second bent pipe through a second concentric reducer, the inner diameter of the small end of the second concentric reducer is equal to the inner diameter of the second straight pipe, and the inner diameter of the large end of the second concentric reducer is equal to the inner diameter of the second bent pipe, the small end of the second concentric reducer is welded on the second straight pipe, and the large end of the second concentric reducer is welded at one end of the second bent pipe;
the second feeding pipe fitting is used for conveying the catalyst with relatively low content, the second feeding pipe fitting is a straight pipe, one end of the second feeding pipe fitting is connected with the conveying pipe fitting of the catalyst with relatively low content, and the second feeding pipe fitting is welded on the second bent pipe and communicated with the second bent pipe;
the mixing pipe fitting comprises a third straight pipe, a pipe cap and a discharging pipe fitting; the inner diameter of third straight tube equals with the inner diameter of second return bend, the pipe cap welding is in the one end of third straight tube, the other end of third straight tube is equipped with first flange seat, the second return bend is kept away from the one end of the concentric reducer of second and is connected with second flange seat, second flange seat matches with first flange seat, the third straight tube is linked together through first flange seat and second return bend, the junction between first flange seat and the second flange seat is equipped with the sealing washer, ejection of compact pipe fitting welding is in on the lateral wall of third straight tube and be linked together with the third straight tube.
2. The chemical connecting elbow pipe according to claim 1, wherein a pipe connector is arranged at the welding position of the first straight pipe and the first elbow pipe.
3. The chemical connecting elbow according to claim 1 or 2, wherein a fourth straight pipe is welded to an end of the second elbow away from the second concentric reducer, the fourth straight pipe is communicated with the second elbow, the inner diameter of the fourth straight pipe is equal to the inner diameter of the second elbow, and the second flange seat is welded to the fourth straight pipe.
4. A chemical connecting elbow according to claim 3, wherein the centerline of the second feeding pipe coincides with the centerline of the fourth straight pipe, and the second feeding pipe extends into the second elbow and is flush with the end of the fourth straight pipe welded to the second elbow.
5. The chemical connecting elbow pipe according to claim 1 or 2, wherein the first straight pipe, the first elbow pipe, the second feeding pipe and the discharging pipe are seamless pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921315331.9U CN210545005U (en) | 2019-08-14 | 2019-08-14 | Chemical connection elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921315331.9U CN210545005U (en) | 2019-08-14 | 2019-08-14 | Chemical connection elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210545005U true CN210545005U (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921315331.9U Active CN210545005U (en) | 2019-08-14 | 2019-08-14 | Chemical connection elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210545005U (en) |
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2019
- 2019-08-14 CN CN201921315331.9U patent/CN210545005U/en active Active
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