CN111689236A

CN111689236A - Nano calcium pneumatic conveying pipeline

Info

Publication number: CN111689236A
Application number: CN202010487825.6A
Authority: CN
Inventors: 米渊; 常宇舜; 耿高峰; 马静; 梁长涛
Original assignee: Beijing Petrochemical Engineering Co Ltd
Current assignee: Beijing Petrochemical Engineering Co Ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-09-22

Abstract

The invention provides a nano calcium pneumatic conveying pipeline which comprises a steel pipe and a pneumatic conveying PU hose, wherein flange elements are fixedly arranged at two ends of the steel pipe, the pneumatic conveying PU hose is coaxially sleeved in the steel pipe, an annular space is formed between the outer wall of the pneumatic conveying PU hose and the inner wall of the steel pipe, and two ends of the pneumatic conveying PU hose are respectively abutted against corresponding flange elements. The invention has the advantages that the steel pipe is coaxially arranged outside the pneumatic conveying PU hose, so that the phenomenon that the pneumatic conveying PU hose is aged, hardened and loses elasticity due to the fact that sunlight directly irradiates the pneumatic conveying PU hose can be avoided, meanwhile, the pneumatic conveying PU hose is coaxially sleeved in the steel pipe, so that the pneumatic conveying PU hose has a shaking space, powder adhered to the inner wall can be shaken off by the pneumatic conveying PU hose, and the pipeline is prevented from being blocked.

Description

Nano calcium pneumatic conveying pipeline

Technical Field

The invention relates to a nano calcium pneumatic conveying pipeline.

Background

Nanometer calcium powder is used as an additive to absorb acid components in tail gas in a coal gasification sulfur recovery treatment section. When the steel pipe is adopted to convey the nano calcium material, the nano calcium powder can be adhered to the inner wall of the pipeline, so that the inner channel of the pipeline is smaller and smaller until the pipe is blocked. In order to solve the problem of pipe blockage, the conveying pipeline is made of a polyurethane material, and the pipe wall of the PU hose is elastic and can vibrate during pneumatic conveying, so that materials adhered to the pipe wall shake off. However, the following problems are encountered when using pneumatic PU hoses: 1. pneumatic conveying PU hose way is softer relatively the steel pipe, and unable on-the-spot direct preparation pipeline bracket need lay the channel-section steel in pneumatic conveying PU hose way lower part during laying, places pneumatic conveying PU hose way in the channel-section steel, is unfavorable for the construction. 2. Because the pipeline is exposed, the pipeline is aged and hardened to lose elasticity when being subjected to direct sunlight.

Disclosure of Invention

The invention provides a nano calcium pneumatic conveying pipeline, which aims to achieve the purpose of prolonging the service life of a PU (polyurethane) hose for pneumatic conveying.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a pipeline for nano-calcium pneumatic conveying, includes steel pipe and pneumatic conveying PU hose, and the both ends of steel pipe are fixed and are provided with the flange component, and pneumatic conveying PU hose coaxial cover is established in the steel pipe, forms the annular space between the outer wall of pneumatic conveying PU hose and the inner wall of steel pipe, and the both ends of pneumatic conveying PU hose respectively with the flange component butt that corresponds.

Furthermore, the flange element comprises a fixed flange which is of a circular ring-shaped structure with an axial through hole, and one side end face of the fixed flange is fixedly welded with one end of the steel pipe; one end of the pneumatic conveying PU hose is provided with a plane pad extending outwards along the radial direction, and the plane pad is abutted against the end face of the other side of the fixed flange.

Furthermore, the flange element also comprises a flat welding ring and a loose flange, the loose flange is sleeved on the steel pipe and can move relative to the steel pipe, and the flat welding ring is welded and fixed with the other end of the steel pipe and can limit the axial displacement of the loose flange; one end of the pneumatic conveying PU hose is provided with an O-shaped pad extending outwards along the radial direction, and the flat welding ring is abutted against the O-shaped pad.

Furthermore, the outer diameter of the pneumatic conveying PU hose, the diameter of the axial through hole of the fixed flange and the inner diameter of the flat welding ring are the same.

Further, the length of the pneumatic conveying PU hose is smaller than that of the outer steel pipe.

Furthermore, an observation assembly for observing the pneumatic conveying PU hose is arranged on the outer wall of the steel pipe.

Further, the observation assembly includes: the threaded short joint is arranged on the outer wall of the steel pipe, and an internal threaded hole of the threaded short joint is communicated with the interior of the steel pipe; transparent observation tube sets up on the nipple, and the one end of transparent observation tube is provided with the external screw thread with internal thread hole complex.

Furthermore, the other end of the transparent observation tube is provided with a sintered metal plug for sealing the transparent observation tube.

Further, the axes of the sintered metal plug, the transparent observation pipe and the threaded short joint are collinear, and the axis of the threaded short joint is obliquely arranged relative to the axis of the steel pipe.

The invention has the advantages that the steel pipe is coaxially arranged outside the pneumatic conveying PU hose, so that the phenomenon that the pneumatic conveying PU hose is aged, hardened and loses elasticity due to the fact that sunlight directly irradiates the pneumatic conveying PU hose can be avoided, meanwhile, the pneumatic conveying PU hose is coaxially sleeved in the steel pipe, so that the pneumatic conveying PU hose has a shaking space, powder adhered to the inner wall can be shaken off by the pneumatic conveying PU hose, and the pipeline is prevented from being blocked.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is a schematic view of the viewing assembly of FIG. 1;

fig. 5 is a schematic structural view of the pneumatic conveying PU hose of fig. 1.

Reference numbers in the figures: 1. an O-shaped pad; 2. loosening the flange; 3. sintering the metal plug; 4. a transparent viewing tube; 5. a short threaded joint; 6. a steel pipe; 7. conveying the PU hose pneumatically; 8. fixing a flange; 9. a planar pad.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 5, a pipeline for nano calcium pneumatic conveying comprises a steel pipe 6 and a pneumatic conveying PU hose 7, flange elements are fixedly arranged at two ends of the steel pipe 6, the pneumatic conveying PU hose 7 is coaxially sleeved in the steel pipe 6, an annular space is formed between the outer wall of the pneumatic conveying PU hose 7 and the inner wall of the steel pipe 6, and two ends of the pneumatic conveying PU hose 7 are respectively abutted to the corresponding flange elements.

Through the coaxial steel pipe 6 that sets up outside pneumatic conveying PU hose 7, can avoid sunshine to penetrate pneumatic conveying PU hose 7 directly to make pneumatic conveying PU hose 7 age to harden and lose elasticity, establish pneumatic conveying PU hose 7 coaxial cover simultaneously and can make pneumatic conveying PU hose 7 have the shake space in steel pipe 6, the powder of pneumatic conveying PU hose 7 with the adhesion on the inner wall of being convenient for is shaken off, avoids blockking up the pipeline.

The flange element comprises a fixed flange 8, the fixed flange 8 is of a circular structure with an axial through hole, and one side end face of the fixed flange 8 is fixedly welded with one end of the steel pipe 6; one end of the pneumatic conveying PU hose 7 is provided with a plane pad 9 extending outwards along the radial direction, and the plane pad 9 is abutted with the other end face of the fixed flange 8.

The fixed flange 8 is also provided with a plurality of threaded mounting holes arranged at intervals, the diameters of the threaded mounting holes are the same, and the threaded mounting holes are distributed in an annular array along the axis of the fixed flange 8.

The flange element also comprises a loose flange 2 and a flat welding ring, wherein the loose flange 2 is sleeved on the periphery of the steel pipe 6 and can rotate or move relative to the steel pipe 6. The flat welding ring is welded and fixed with the other end of the steel pipe 6 and can limit the axial displacement of the loose flange 2. One end of the pneumatic conveying PU hose 7 is provided with an O-shaped pad 1 which extends towards the outside along the radial direction, and the O-shaped pad 1 is abutted with the flat welding ring. Namely, two ends of the pneumatic conveying PU hose 7 are respectively provided with a radial outward flange structure with different structures, wherein the radial outer flange at one end is a plane annular structure (a plane pad 9), and the section of the radial outer flange at the other end is an O-shaped or circular structure (an O-shaped pad 1). The fixed flange 8, the loose flange 2 and the flat welding ring are standard parts, and the structures of the fixed flange, the loose flange 2 and the flat welding ring are not described again.

Set up fixed flange 8 and loose flange 2 and can be convenient for this embodiment and correspond the subassembly and be connected, the staff of being convenient for carries out the dismouting, it needs to explain simultaneously that, when pneumatic transport PU hose 7 assembles steel pipe 6, penetrate the one end of O shape pad 1 and wear out from the one end that loose flange 2 is located by the one end of fixed flange 8 of steel pipe 6, because pneumatic transport PU hose 7 has elasticity, consequently O shape pad 1 can be passed in the hole of loose flange 2.

Wherein, the outer diameter D of the pneumatic conveying PU hose 7, the diameter of the axial through hole of the fixed flange 8 and the inner diameter of the flat welding ring are the same and are all smaller than the diameter D of the steel pipe 6. The diameters of the respective components are set to the above-described structure in order to ensure the installation stability of the pneumatic conveying PU hose 7.

In this embodiment, the length L of pneumatic conveying PU hose 7 slightly is less than the length of steel pipe 6 to guarantee that pneumatic conveying PU hose 7 both ends can the joint on the flange subassembly that corresponds, ensure that the installation is stable, can make pneumatic conveying PU hose 7 tensile simultaneously and tighten.

As shown in fig. 1, an observation unit for observing the pneumatic PU hose 7 is provided on the outer wall of the steel pipe 6. The observation assembly comprises a threaded short joint 5, a transparent observation tube 4 and a sintered metal plug 3. The threaded short joint 5 is arranged on the outer wall of the steel pipe 6, and an internal threaded hole of the threaded short joint 5 is communicated with the inside of the steel pipe 6. Transparent observation tube 4 sets up on threaded nipple 5, and the one end of transparent observation tube 4 is provided with the external screw thread with internal thread hole complex. The other end of the transparent observation tube 4 is provided with a sintered metal plug 3 for sealing the transparent observation tube 4.

A threaded short joint 5 is welded on a steel pipe 6, a transparent observation pipe 4 is arranged on the threaded short joint 5, and then a sintered metal plug 3 is arranged on the transparent observation pipe 4. When the PU hose 7 is damaged, the transparent observation tube 4 is filled with materials, so that whether the transparent observation tube 4 is damaged or not can be judged under the condition that the tube section is not disassembled.

In this embodiment, the axes of the sintered metal plug 3, the transparent observation tube 4 and the threaded nipple 5 are collinear, and the axis of the threaded nipple 5 is arranged obliquely to the axis of the steel tube 6. The included angle between the connecting line direction of the threaded short joint 5 towards the sintered metal plug 3 and the material conveying direction of the pneumatic conveying PU hose 7 is an obtuse angle, when the pneumatic conveying PU hose 7 is damaged, materials can enter the transparent observation tube 4 along the conveying direction more easily, and a worker can check the running condition of the pneumatic conveying PU hose 7 conveniently.

The embodiment specifically works as follows:

when the pipeline for pneumatic conveying of nano calcium is used for pneumatic conveying of nano calcium, nano calcium materials are conveyed inside the PU hose 7 in the arrow direction in figure 1. An annular space is arranged between the pneumatic conveying PU hose 7 and the external steel pipe 6, so that the process requirement that the pipeline shakes when the pneumatic conveying PU hose 7 is adopted for conveying can be met, and the nano calcium can not be adhered to the inner wall of the pneumatic conveying PU hose 7. The external steel pipe 6 plays a role in protecting and supporting the internal pneumatic transmission PU hose 7, and can be connected and supported according to the construction method of the steel pipe. Because the pneumatic conveying PU hose 7 avoids direct sunlight inside the steel pipe 6, the aging and hardening process of the pneumatic conveying PU hose 7 is delayed.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: through the coaxial steel pipe 6 that sets up outside pneumatic conveying PU hose 7, can avoid sunshine to penetrate pneumatic conveying PU hose 7 directly for pneumatic conveying PU hose 7 is ageing harden and is lost elasticity, overlaps the coaxial cover of pneumatic conveying PU hose 7 simultaneously and can make pneumatic conveying PU hose 7 have the shake space in steel pipe 6, and the powder of the pneumatic conveying PU hose 7 of being convenient for with the adhesion on the inner wall is shaken off, avoids blockking up the pipeline.

The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features, the technical schemes and the technical schemes can be freely combined and used.

Claims

1. The utility model provides a pipeline for nano-calcium pneumatic conveying, its characterized in that, includes steel pipe (6) and pneumatic conveying PU hose (7), and the both ends of steel pipe (6) are fixed and are provided with flange component, and the coaxial cover of pneumatic conveying PU hose (7) is established in steel pipe (6), forms the annular space between the outer wall of pneumatic conveying PU hose (7) and the inner wall of steel pipe (6), the both ends of pneumatic conveying PU hose (7) respectively with correspond the butt of flange component.

2. The nano-calcium pneumatic conveying pipeline according to claim 1,

the flange element comprises a fixed flange (8), the fixed flange (8) is of a circular ring-shaped structure with an axial through hole, and one end face of one side of the fixed flange (8) is welded and fixed with one end of the steel pipe (6);

one end of the pneumatic conveying PU hose (7) is provided with a plane pad (9) which extends towards the outside along the radial direction, and the plane pad (9) is abutted against the other end face of the fixed flange (8).

3. The nano-calcium pneumatic conveying pipeline according to claim 2,

the flange element further comprises a flat welding ring and a loose flange (2), the loose flange (2) is sleeved on the steel pipe (6) and can move relative to the steel pipe (6), and the flat welding ring is fixedly welded with the other end of the steel pipe (6) and can limit the axial displacement of the loose flange (2);

one end of the pneumatic conveying PU hose (7) is provided with an O-shaped pad (1) extending outwards along the radial direction, and the flat welding ring is abutted against the O-shaped pad (1).

4. The pipeline for nano-calcium pneumatic transmission according to claim 3, wherein the outer diameter of the PU hose (7) for pneumatic transmission, the diameter of the axial through hole of the fixed flange (8) and the inner diameter of the flat welding ring are the same.

5. The nano calcium pneumatic conveying pipeline according to claim 1, wherein the length of the PU hose (7) for pneumatic conveying is less than that of the steel pipe (6).

6. The nano-calcium pneumatic conveying pipeline according to claim 1, wherein an observation assembly for observing the pneumatic conveying PU hose (7) is arranged on the outer wall of the steel pipe (6).

7. The nano-calcium pneumatic conveying pipeline according to claim 6, wherein the observation assembly comprises:

the threaded short joint (5) is arranged on the outer wall of the steel pipe (6), and an internal threaded hole of the threaded short joint (5) is communicated with the interior of the steel pipe (6);

transparent observation pipe (4), set up on threaded nipple (5), the one end of transparent observation pipe (4) be provided with internal thread hole complex external screw thread.

8. The pipeline for nano-calcium pneumatic transmission according to claim 7, wherein the other end of the transparent observation pipe (4) is provided with a sintered metal plug (3) for sealing the transparent observation pipe (4).

9. The nano-calcium pneumatic conveying pipeline according to claim 8, wherein the axes of the sintered metal plug (3), the transparent observation pipe (4) and the threaded short joint (5) are collinear, and the axis of the threaded short joint (5) is arranged obliquely relative to the axis of the steel pipe (6).