Quick conversion joint for pipeline

Abstract

The utility model discloses a quick pipeline adapter which comprises a straight pipe section, one end of the straight pipe section is inserted and fixed in a first connecting part, and the other end of the straight pipe section is inserted and fixed in a second connecting part; the first connecting part comprises a connecting pipe, a boss is arranged at the end, away from the straight pipe section, of the connecting pipe, and a groove communicated with an inner cavity of the connecting pipe is formed in an inner cavity of the boss. And the second connecting part is a flange plate. When the pipeline quick conversion joint is used in the pipeline connection process of a horizontal stope filling pipe network, the ground surface and a middle section horizontal pipeline are connected through the first connecting part, and a macromolecular polyester material pipe of a to-be-filled goaf drift filling pipe is connected through the second connecting part, so that the purposes of simple connection and mutual conversion are achieved; the problem of transition connection of main pipelines such as earth surface and middle section horizontal pipelines in underground filling pipelines and branch pipelines of a goaf is solved, the flow resistance of slurry in the pipelines is reduced, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of joint, concretely relates to a pipeline quick change joint. BACKGROUND

[0002] The downward cemented filling mining method is a method for mining from top to bottom under the protection of artificial false roof, which is a safe and reliable mining method for broken ore body, can greatly reduce the loss rate and dilution rate indexes, and thus significantly improve the economic benefits. When mining the mine by using the downward cemented filling mining method, the mining and filling need to be carried out synchronously, the pipeline conveying during filling generally adopts a ladder type layout, the vertical section (intermediate section) of the underground pipeline mainly uses drilling, and the horizontal section mainly uses the roadway of each intermediate section to erect the pipeline.

[0003] The filling pipe network arrangement scheme of a certain mine area 934m level stope is as shown in Figure 5 From the surface of the filling station to the underground, the filling pipe diameter gradually decreases, the size difference between the pipe diameters should not be too large, which is beneficial to stable conveying and pipeline cleaning, and the joint form between the pipelines adopts ordinary joints or flange connection. Since the inner diameter of the high polymer polyester material pipe is much larger than that of the ordinary fluid pipe with the same size, it is beneficial to improve the slurry concentration, and the wear resistance of the high polymer polyester material pipe is much higher than that of the ordinary fluid pipe, the system pipeline reliability is higher, the failure shutdown caused by the leakage of the ordinary steel pipe wear can be reduced, and the filling quality can be improved. Moreover, the unit weight of the high polymer polyester material pipe is not much different from that of the ordinary fluid pipe, and it is more suitable for installation in a poor environment, so that the damage of the panel filling back air system caused by the wear of the ordinary fluid pipe can be avoided, and the labor intensity of the pipe replacement workers can be reduced. Therefore, when connecting the filling pipe network pipeline of the horizontal stope, the surface and the intermediate horizontal pipeline are connected by using ordinary joints, and the filling pipe of the access of the mined-out area is connected by using the flange of the high polymer polyester material pipe. In order to effectively connect the pipelines with different specifications and materials, a conversion joint needs to be designed. UTILITY MODEL CONTENTS

[0004] The utility model provides a pipeline quick change joint, aims at solving the problem of inconvenient connection between the pipelines with different specifications and materials and difficult connection when connecting the filling pipe network pipeline of the horizontal stope.

[0005] In order to achieve the purpose, the utility model adopts the following technical scheme:

[0006] A pipeline quick change joint, the conversion joint includes a straight pipe section, one end of the straight pipe section is inserted and fixed in a first connecting part, and the other end is inserted and fixed in a second connecting part; the first connecting part includes a connecting pipe, one end of the connecting pipe away from the straight pipe section is provided with a boss, and the inner cavity of the boss is provided with a groove in communication with the inner cavity of the connecting pipe; and the second connecting part is a flange plate.

[0007] Further, the end of the groove is tapered.

[0008] Further, the straight pipe section is fixed in the first connecting part and the second connecting part by welding at both ends, and the height of the welding seam is 3-5mm.

[0009] Further, the straight pipe section is a steel pipe with a thickness of 5-7mm, and the outer wall of the straight pipe section is coated with molybdenum-chromium alloy with a thickness of 9-11mm as a wear-resistant layer.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1. In the process of connecting the pipe network pipe in the horizontal stope filling, the first connecting part is used to connect the surface and the middle horizontal pipe, and the second connecting part is used to connect the high polymer polyester material pipe of the filling pipe of the mining area, so as to achieve the purpose of simple connection and mutual conversion, solve the transition connection problem of the main pipe and the branch pipe of the mining area, make the pipe connection more convenient and reliable, have good connection effect, reduce the slurry flow resistance in the pipe, improve the operation efficiency, reduce the labor intensity of the operation personnel, and be safe and practical.

[0012] 2. The material of the straight pipe section in the pipe quick conversion joint is Q235+molybdenum-chromium alloy, the molybdenum-chromium alloy is used as a wear-resistant layer to prolong the service life of the quick conversion joint, reduce the maintenance and replacement frequency, and save production cost. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the quick conversion joint of the utility model;

[0014] Figure 2 It is a structure schematic view of the first connecting part of the utility model;

[0015] Figure 3 It is a structure schematic view of the straight pipe section of the utility model;

[0016] Figure 4 It is a structure schematic view of the second connecting part of the utility model;

[0017] Figure 5 It is a layout scheme drawing of the existing horizontal stope filling pipe network;

[0018] In the drawing, 1 is a first connecting part, 2 is a straight pipe section, 3 is a second connecting part, 4 is a connecting pipe, 5 is a boss, and 6 is a groove. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings:

[0020] AsFigures 1-4 The utility model discloses a kind of pipeline quick change-over connector, as shown in the utility model, the change-over connector includes straight pipe section 2, straight pipe section 2 one end is inserted and welded fixed in first connecting part 1, the other end is inserted and welded fixed in second connecting part 3, and the height of weld is 3mm.The first connecting part 1 includes connecting pipe 4, the connecting pipe 4 one end away from straight pipe section 2 is equipped with boss 5, the inner cavity of boss 5 is equipped with recess 6 with the inner cavity of connecting pipe 4 is communicated, and the end of recess 6 away from boss 5 side is conical, and the vertex angle of cone is 7 ° 30 '.

[0021] In Figure 5 As shown in the process of using in the 934m horizontal stope filling pipe network pipeline connection, at the position 3m away from the filling wall of the to-be-filled goaf, the pipeline quick change-over connector is used, the surface and middle horizontal pipe are inserted into the recess 6 of the first connecting part 1 and fixed, the high polymer polyester material pipe with flange installed in the to-be-filled goaf is inserted into the second connecting part 3 and fixed, the surface and middle horizontal pipe are connected through the first connecting part 1, and the high polymer polyester material pipe with flange installed in the to-be-filled goaf is connected through the second connecting part 3, so as to solve the transition connection problem of the main pipeline such as surface and middle horizontal pipe and branch pipeline of the to-be-filled goaf in underground filling pipeline, make the pipeline connection more convenient and reliable, the connection effect is good, the slurry flow resistance in the pipeline is reduced, the operation efficiency is improved, the labor intensity of the operator is reduced, and the utility model is safe and practical.

Claims

1. A quick-connect fitting for pipelines, characterized in that: The conversion joint comprises a straight pipe section (2) which is fixedly inserted at one end in the first connecting part (1) and at the other end in the second connecting part (3); the first connecting part (1) comprises a connecting pipe (4), one end of the connecting pipe (4) away from the straight pipe section (2) is provided with a boss (5), and the inner cavity of the boss (5) is provided with a groove (6) which is communicated with the inner cavity of the connecting pipe (4); the second connecting part (3) is a flange.

2. A quick disconnect coupling for tubing as defined in claim 1, wherein: The end of the groove (6) is tapered.

3. A quick disconnect coupling for tubing as defined in claim 2, wherein: The straight pipe section (2) is fixedly welded at both ends in the first connecting part (1) and the second connecting part (3), and the height of the weld is 3-5 mm.

4. A quick disconnect coupling for tubing as defined in claim 3, wherein: The straight pipe section (2) is a steel pipe with a thickness of 5-7 mm, and the outer wall of the straight pipe section (2) is coated with a molybdenum-chromium alloy with a thickness of 9-11 mm as a wear-resistant layer.

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