CN114076260A

CN114076260A - Oval section slurry conveying pipeline system

Info

Publication number: CN114076260A
Application number: CN202111373290.0A
Authority: CN
Inventors: 邓代强; 樊金宽; 王润泽; 马云帆; 曹国栋; 罗正东; 陈子珉; 高宇; 王野
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-02-22

Abstract

The invention discloses a slurry conveying pipeline system with an oval section, which belongs to the technical field of mining machinery and safety engineering, and comprises an outer pipe surface, a steel pipe, a first circular section, a first circle center, a second circle center, a third circle center, a second circular section, a third circular section, an oval section, an upper marking line and a lower marking line, wherein the circle center of the steel pipe is the first circle center, the diameter of the steel pipe is D, the position where the first circle center deviates from D/2 is respectively taken as the second circle center and the third circle center, the second circle section is arranged at the second circle center, the third circle section is arranged at the third circle center, the second circle section and the third circle section are both inscribed with the first circle section, the first circle section is tangent to the oval end surface, and the upper marking line and the lower marking line are respectively distributed along the bus direction at the top and the bottom of the outer pipe surface; the system uses the filling pipeline with the oval cross section, can efficiently and safely promote the stable transportation of filling slurry, reduces the frequency of replacing and maintaining the pipeline and ensures the stability of the underground filling quality.

Description

Oval section slurry conveying pipeline system

Technical Field

The invention belongs to the technical field of mining machinery and safety engineering, and particularly relates to an oval-section slurry conveying pipeline system.

Background

In the process of carrying out goaf filling technology research, in order to ensure that the conveying operation of filling slurry is normally carried out, the completeness and reliability of a filling pipeline need to be ensured, and the pipeline with problems needs to be maintained or replaced in time so as to achieve stable conveying and ensure smooth and continuous process, thereby achieving the purpose of improving the strength of an underground filling body. Therefore, appropriate technical measures need to be taken, namely, the stable transportation of the filling slurry needs to be efficiently, conveniently and safely achieved, and the key factor of the transportation of the filling slurry is the reliability of the transportation pipeline, namely, the pipeline needs to be worn slightly and replaced less, and when different transportation pipelines are adopted, the safety and the transportation effect in the transportation process are different. If the pipeline is worn quickly and replaced frequently, the filling speed of the goaf can be greatly reduced, the preparation and conveying pin rate of filling slurry is reduced, and serious safety accidents can be even caused by the pipeline worn too frequently. At this time, a convenient and efficient filling pipeline is needed to achieve an ideal conveying effect, namely, the filling slurry conveying is efficiently and safely realized, so that the filling operation is smoothly carried out.

Disclosure of Invention

The invention aims to provide an elliptical section slurry conveying pipeline system, which uses an elliptical section filling pipeline, can efficiently and safely promote the stable conveying of filling slurry, reduce the frequency of replacing and maintaining the pipeline and ensure the stability of underground filling quality.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an oval section slurry conveying pipeline system, this oval section slurry conveying pipeline system includes outer pipe surface, steel pipe, first circle cross-section, first centre of a circle, the second centre of a circle, the third centre of a circle, the second circle cross-section, the third circle cross-section, oval section, go up the mark line, down mark line, the centre of a circle of steel pipe is first centre of a circle, and the steel pipe diameter is D, with the skew D/2 department of first centre of a circle is respectively the second centre of a circle, the third centre of a circle, with the second centre of a circle sets up the second circle cross-section, with the third centre of a circle sets up the third circle cross-section, second circle cross-section and third circle cross-section all with first circle cross-section is tangent, first circle cross-section with oval terminal surface is tangent, go up mark line with down mark line is in outer pipe surface top and bottom distribute along the generating line direction respectively.

Preferably, the thickness of the oval cross section near the upper and lower marking lines is S, and the thickness of the oval cross section near the upper and lower marking lines is S1, wherein S > S1.

Adopt above-mentioned scheme: because the upper marking line faces towards the upper part and the lower marking line faces towards the lower part during installation, during filling operation, filling slurry flows in the pipeline to gradually wash the inner wall of the whole pipeline, and because particles in the filling slurry are settled and transported downwards under the action of gravity, the inner wall of the pipeline close to the lower marking line is worn the fastest finally, and the wear resistance of the pipeline is increased due to the increased thickness.

Preferably, the oval cross sections are connected section by section in an end-to-end manner.

The invention has the beneficial effects that: through using oval section filling pipe, can prolong the live time of filling the pipeline greatly, reduce the number of times of changing the pipeline, use manpower and materials sparingly, save pipeline purchase and maintenance cost, guarantee to fill the reliability that ground paste long distance pipeline carried, can carry out the transport of filling the ground paste high-efficiently, safely, swiftly from this, make the operation of filling go on smoothly to guarantee filling quality's reliable and stable.

Drawings

FIG. 1 is a schematic structural view of an elliptical cross-section slurry transport piping system provided by the present invention;

FIG. 2 is an end view of FIG. 1 of an elliptical cross-section slurry transport piping system provided by the present invention;

FIG. 3 is a top view of FIG. 1 of an oval cross-section slurry transport piping system provided by the present invention.

In the figure: 1. an outer tubular surface; 2. a steel pipe; 3. a first circular cross-section; 4. a first circle center; 5. a second circle center; 6. a third circle center; 7. a second circular cross-section; 8. a third circular cross-section; 9. an elliptical cross section; 10. marking lines; 11. and marking the line at the bottom.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

Referring to fig. 1 to 3, the elliptical cross-section slurry transport pipeline system according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Examples

As shown in fig. 1-3, the oval section slurry delivery pipe system comprises an outer pipe surface 1, a steel pipe 2, a first circular section 3, a first circle center 4, a second circle center 5, a third circle center 6, a second circular section 7, a third circular section 8, an oval section 9, an upper marked line 10, a lower marked line 11, a circle center of the steel pipe 2 is the first circle center 4, the diameter of the steel pipe 2 is D, the positions of the first circle center 4 deviating from D/2 are respectively taken as the second circle center 5 and the third circle center 6, the second circular section 7 is arranged by the second circle center 5, the third circular section 8 is arranged by the third circle center 6, the second circular section 7 and the third circular section 8 are both internally tangent with the first circular section 3, the first circular section 3 is tangent with the elliptic end surface 9, the upper marking lines 10 and the lower marking lines 11 are respectively distributed along the generatrix direction at the top and the bottom of the outer pipe surface 1.

Specifically, the thickness of the elliptical cross section 9 near the upper mark line 10 and the lower mark line 11 is S, and the thickness of the other positions is S1, wherein S > S1, and when the elliptical cross section 9 is installed, the elliptical cross section 9 is connected in a section-by-section manner.

The working principle of the invention is as follows: when the wear-resistant pipe is used, the cross section of a cavity of the steel pipe is processed into an oval shape during manufacturing, the circle center of the steel pipe 2, namely the first circle center 4, is deviated to the second circle center 5 and the third circle center 6 by D/2 length units respectively, the diameters of the second circle cross section 7 and the third circle cross section 8 are the same, the shapes determined by the second circle cross section 7 and the third circle cross section 8 are basically an oval shape, the first circle cross section 3 is tangent to the second circle cross section 7 and the third circle cross section 8, the first circle cross section 3 is tangent to the oval cross section 9, the finally formed pipe cross section is the oval cross section 9, the wear-resistant layer thicknesses of the oval cross section 9 close to the upper mark line 10 and the lower mark line 11 are thicker, and the thicknesses exceeding other parts are S.

During construction, filling pipelines with oval cross sections are connected section by section, the installation mode is that an upper marking line 10 faces to the upper side, a lower marking line 11 faces to the lower side, during filling operation, filling slurry flows in the pipelines, the inner walls of the whole pipelines are gradually washed, and particles in the filling slurry are settled and moved downwards under the action of gravity, so that the inner walls of the pipelines close to the lower marking line 11 are worn the fastest, and the inner walls of the pipelines close to the upper marking line 10 are worn the slowest; when the inner wall of the pipeline close to the lower marking line 11 is worn to a certain degree, the oval cross-section filling pipeline is integrally rotated by 180 degrees, namely, the lower marking line 11 faces to the right upper side, the upper marking line 10 faces to the right lower side, at the moment, the inner wall of the pipeline close to the upper marking line 10 is worn most quickly, and the inner wall of the pipeline close to the lower marking line 11 is worn most slowly, so that the wear rate of the filling pipeline in the whole service life is delayed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An oval section slurry conveying pipe system which characterized in that: the system comprises an outer pipe surface (1), a steel pipe (2), a first circular section (3), a first circle center (4), a second circle center (5), a third circle center (6), a second circular section (7), a third circular section (8), an oval section (9), an upper marking line (10) and a lower marking line (11), wherein the circle center of the steel pipe (2) is the first circle center (4), the diameter of the steel pipe (2) is D, the positions of the first circle center (4) deviating from D/2 are respectively the second circle center (5) and the third circle center (6), the second circle section (7) is arranged at the second circle center (5), the third circular section (8) is arranged at the third circle center (6), the second circular section (7) and the third circular section (8) are both inscribed with the first circular section (3), and the first circular section (3) is tangent with the oval section (9), the upper marking lines (10) and the lower marking lines (11) are distributed at the top and the bottom of the outer pipe surface (1) along the direction of a bus respectively.

2. The elliptical cross-section slurry transport conduit system of claim 1, wherein: the thickness of the oval section (9) close to the upper marking line (10) and the lower marking line (11) is S, and the thickness of the other parts is S1, wherein S is more than S1.

3. The elliptical cross-section slurry transport conduit system of claim 1, wherein: the oval cross sections (9) are connected section by section and in the end.